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Posted to commits@qpid.apache.org by kg...@apache.org on 2018/06/01 15:00:12 UTC

[02/11] qpid-dispatch git commit: DISPATCH-965: port python code to Python 3. Stay compatible with 2.6-7

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/error.c
----------------------------------------------------------------------
diff --git a/src/error.c b/src/error.c
index b837a65..e3009cb 100644
--- a/src/error.c
+++ b/src/error.c
@@ -19,11 +19,10 @@
 
 
 /* Make sure we get the XSI compliant strerror_r from string.h not the GNU one. */
-#define _POSIX_C_SOURCE 200112L
-#undef _GNU_SOURCE
+/*#define _POSIX_C_SOURCE 200112L
+  #undef _GNU_SOURCE*/
 #include <string.h>
 
-#include <Python.h>
 #include <qpid/dispatch/error.h>
 #include <qpid/dispatch/enum.h>
 #include <qpid/dispatch/log.h>
@@ -33,6 +32,7 @@
 #include <errno.h>
 #include "log_private.h"
 #include "aprintf.h"
+#include "python_private.h"
 
 static const char *qd_error_names[] = {
  "No Error",
@@ -108,7 +108,7 @@ qd_error_t qd_error_code() {
 }
 
 static void py_set_item(PyObject *dict, const char* name, PyObject *value) {
-    PyObject *py_name = PyString_FromString(name);
+    PyObject *py_name = PyUnicode_FromString(name);
     PyDict_SetItem(dict, py_name, value);
     Py_DECREF(py_name);
 }
@@ -138,17 +138,21 @@ static void log_trace_py(PyObject *type, PyObject *value, PyObject* trace, qd_lo
 
 
     if (result) {
-        const char* trace = PyString_AsString(result);
-        if (strlen(trace) < QD_LOG_TEXT_MAX) {
-            qd_log_impl(log_source, level, file, line, "%s", trace);
-        } else {
-            // Keep as much of the the tail of the trace as we can.
-            const char *tail = trace;
-            while (tail && strlen(tail) > QD_LOG_TEXT_MAX) {
-                tail = strchr(tail, '\n');
-                if (tail) ++tail;
+	char *trace = py_string_2_c(result);
+	if (trace) {
+            if (strlen(trace) < QD_LOG_TEXT_MAX) {
+                qd_log_impl(log_source, level, file, line, "%s", trace);
+            } else {
+                // Keep as much of the the tail of the trace as we can.
+                const char *tail = trace;
+                while (tail && strlen(tail) > QD_LOG_TEXT_MAX) {
+                    tail = strchr(tail, '\n');
+                    if (tail) ++tail;
+                }
+                qd_log_impl(log_source, level, file, line,
+                            "Traceback truncated:\n%s", tail ? tail : "");
             }
-            qd_log_impl(log_source, level, file, line, "Traceback truncated:\n%s", tail ? tail : "");
+            free(trace);
         }
         Py_DECREF(result);
     }
@@ -161,19 +165,21 @@ qd_error_t qd_error_py_impl(const char *file, int line) {
         PyErr_Fetch(&type, &value, &trace); /* Note clears the python error indicator */
 
         PyObject *py_type_name = type ? PyObject_GetAttrString(type, "__name__") : NULL;
-        const char *type_name = py_type_name ? PyString_AsString(py_type_name) : NULL;
-
+        char *type_name = py_type_name ? py_string_2_c(py_type_name) : NULL;
         PyObject *py_value_str = value ? PyObject_Str(value) : NULL;
-        const char *value_str = py_value_str ? PyString_AsString(py_value_str) : NULL;
-        if (!value_str) value_str = "Unknown";
+        char *value_str = py_string_2_c(py_value_str);
 
         PyErr_Clear(); /* Ignore errors while we're trying to build the values. */
         if (type_name)
-            qd_error_impl(QD_ERROR_PYTHON, file, line, "%s: %s", type_name, value_str);
+            qd_error_impl(QD_ERROR_PYTHON, file, line, "%s: %s", type_name,
+                          (value_str) ? value_str : "Unknown");
         else
-            qd_error_impl(QD_ERROR_PYTHON, file, line, "%s", value_str);
+            qd_error_impl(QD_ERROR_PYTHON, file, line, "%s",
+                          (value_str) ? value_str : "Unknown");
         Py_XDECREF(py_value_str);
+        free(value_str);
         Py_XDECREF(py_type_name);
+        free(type_name);
 
         log_trace_py(type, value, trace, QD_LOG_ERROR, file, line);
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/log.c
----------------------------------------------------------------------
diff --git a/src/log.c b/src/log.c
index e8b4b74..fbb757a 100644
--- a/src/log.c
+++ b/src/log.c
@@ -17,8 +17,6 @@
  * under the License.
  */
 
-#include <Python.h>
-
 #include "log_private.h"
 #include "entity.h"
 #include "entity_cache.h"
@@ -34,6 +32,7 @@
 #include <string.h>
 #include <time.h>
 #include <syslog.h>
+#include "python_private.h"
 
 #define TEXT_MAX QD_LOG_TEXT_MAX
 #define LOG_MAX (QD_LOG_TEXT_MAX+128)
@@ -444,11 +443,11 @@ PyObject *qd_log_recent_py(long limit) {
         if (!py_entry) goto error;
         int i = 0;
         // NOTE: PyList_SetItem steals a reference so no leak here.
-        PyList_SetItem(py_entry, i++, PyString_FromString(entry->module));
+        PyList_SetItem(py_entry, i++, PyUnicode_FromString(entry->module));
         const char* level = level_name(entry->level);
-        PyList_SetItem(py_entry, i++, level ? PyString_FromString(level) : inc_none());
-        PyList_SetItem(py_entry, i++, PyString_FromString(entry->text));
-        PyList_SetItem(py_entry, i++, entry->file ? PyString_FromString(entry->file) : inc_none());
+        PyList_SetItem(py_entry, i++, level ? PyUnicode_FromString(level) : inc_none());
+        PyList_SetItem(py_entry, i++, PyUnicode_FromString(entry->text));
+        PyList_SetItem(py_entry, i++, entry->file ? PyUnicode_FromString(entry->file) : inc_none());
         PyList_SetItem(py_entry, i++, entry->file ? PyLong_FromLong(entry->line) : inc_none());
         PyList_SetItem(py_entry, i++, PyLong_FromLongLong((PY_LONG_LONG)entry->time.tv_sec));
         assert(i == ENTRY_SIZE);

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/parse.c
----------------------------------------------------------------------
diff --git a/src/parse.c b/src/parse.c
index 4aed853..1dc726b 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -22,6 +22,10 @@
 #include <qpid/dispatch/parse.h>
 #include <qpid/dispatch/amqp.h>
 
+#include <stdio.h>
+#include <limits.h>
+#include <assert.h>
+
 DEQ_DECLARE(qd_parsed_field_t, qd_parsed_field_list_t);
 
 struct qd_parsed_field_t {
@@ -357,29 +361,9 @@ qd_iterator_t *qd_parse_typed(qd_parsed_field_t *field)
 uint32_t qd_parse_as_uint(qd_parsed_field_t *field)
 {
     uint32_t result = 0;
-
-    qd_iterator_reset(field->raw_iter);
-
-    switch (field->tag) {
-    case QD_AMQP_UINT:
-        result |= ((uint32_t) qd_iterator_octet(field->raw_iter)) << 24;
-        result |= ((uint32_t) qd_iterator_octet(field->raw_iter)) << 16;
-        // fallthrough
-
-    case QD_AMQP_USHORT:
-        result |= ((uint32_t) qd_iterator_octet(field->raw_iter)) << 8;
-        // Fall Through...
-
-    case QD_AMQP_UBYTE:
-    case QD_AMQP_SMALLUINT:
-    case QD_AMQP_BOOLEAN:
-        result |= (uint32_t) qd_iterator_octet(field->raw_iter);
-        break;
-
-    case QD_AMQP_TRUE:
-        result = 1;
-        break;
-    }
+    uint64_t tmp = qd_parse_as_ulong(field);
+    if (tmp <= UINT_MAX)
+        result = tmp;
 
     return result;
 }
@@ -398,17 +382,50 @@ uint64_t qd_parse_as_ulong(qd_parsed_field_t *field)
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 48;
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 40;
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 32;
+        // Fall Through...
+
+    case QD_AMQP_UINT:
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 24;
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 16;
+        // Fall Through...
+
+    case QD_AMQP_USHORT:
         result |= ((uint64_t) qd_iterator_octet(field->raw_iter)) << 8;
         // Fall Through...
 
+    case QD_AMQP_BOOLEAN:
+    case QD_AMQP_UBYTE:
+    case QD_AMQP_SMALLUINT:
     case QD_AMQP_SMALLULONG:
         result |= (uint64_t) qd_iterator_octet(field->raw_iter);
-        // Fall Through...
+        break;
+
+    case QD_AMQP_TRUE:
+        result = 1;
+        break;
 
+    case QD_AMQP_FALSE:
+    case QD_AMQP_UINT0:
     case QD_AMQP_ULONG0:
+        // already zeroed
+        break;
+
+    case QD_AMQP_STR8_UTF8:
+    case QD_AMQP_STR32_UTF8:
+    case QD_AMQP_SYM8:
+    case QD_AMQP_SYM32:
+        {
+            char buf[72];
+            unsigned long tmp;
+            qd_iterator_strncpy(field->raw_iter, buf, sizeof(buf));
+            if (sscanf(buf, "%lu", &tmp) == 1)
+                result = tmp;
+        }
         break;
+
+    default:
+        // catch any missing types during development
+        assert(false);
     }
 
     return result;
@@ -418,32 +435,9 @@ uint64_t qd_parse_as_ulong(qd_parsed_field_t *field)
 int32_t qd_parse_as_int(qd_parsed_field_t *field)
 {
     int32_t result = 0;
-
-    qd_iterator_reset(field->raw_iter);
-
-    switch (field->tag) {
-    case QD_AMQP_INT:
-        result |= ((int32_t) qd_iterator_octet(field->raw_iter)) << 24;
-        result |= ((int32_t) qd_iterator_octet(field->raw_iter)) << 16;
-        // Fall Through...
-
-    case QD_AMQP_SHORT:
-        result |= ((int32_t) qd_iterator_octet(field->raw_iter)) << 8;
-        // Fall Through...
-
-    case QD_AMQP_BYTE:
-    case QD_AMQP_BOOLEAN:
-        result |= (int32_t) qd_iterator_octet(field->raw_iter);
-        break;
-
-    case QD_AMQP_SMALLINT:
-        result = (int8_t) qd_iterator_octet(field->raw_iter);
-        break;
-
-    case QD_AMQP_TRUE:
-        result = 1;
-        break;
-    }
+    int64_t tmp = qd_parse_as_long(field);
+    if (INT_MIN <= tmp && tmp <= INT_MAX)
+        result = tmp;
 
     return result;
 }
@@ -467,9 +461,56 @@ int64_t qd_parse_as_long(qd_parsed_field_t *field)
         result |= (uint64_t) qd_iterator_octet(field->raw_iter);
         break;
 
+    case QD_AMQP_INT:
+        {
+            int32_t i32 = ((int32_t) qd_iterator_octet(field->raw_iter)) << 24;
+            i32 |= ((int32_t) qd_iterator_octet(field->raw_iter)) << 16;
+            i32 |= ((int32_t) qd_iterator_octet(field->raw_iter)) << 8;
+            i32 |= ((int32_t) qd_iterator_octet(field->raw_iter));
+            result = i32;
+        }
+        break;
+
+    case QD_AMQP_SHORT:
+        {
+            int16_t i16 = ((int16_t) qd_iterator_octet(field->raw_iter)) << 8;
+            i16 |= ((int16_t) qd_iterator_octet(field->raw_iter));
+            result = i16;
+        } break;
+
+    case QD_AMQP_BYTE:
+    case QD_AMQP_BOOLEAN:
     case QD_AMQP_SMALLLONG:
+    case QD_AMQP_SMALLINT:
         result = (int8_t) qd_iterator_octet(field->raw_iter);
         break;
+
+    case QD_AMQP_TRUE:
+        result = 1;
+        break;
+
+    case QD_AMQP_FALSE:
+    case QD_AMQP_UINT0:
+    case QD_AMQP_ULONG0:
+        // already zeroed
+        break;
+
+    case QD_AMQP_STR8_UTF8:
+    case QD_AMQP_STR32_UTF8:
+    case QD_AMQP_SYM8:
+    case QD_AMQP_SYM32:
+        {
+            char buf[64];
+            long int tmp;
+            qd_iterator_strncpy(field->raw_iter, buf, sizeof(buf));
+            if (sscanf(buf, "%li", &tmp) == 1)
+                result = tmp;
+        }
+        break;
+
+    default:
+        // catch any missing types during development
+        assert(false);
     }
 
     return result;

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/policy.c
----------------------------------------------------------------------
diff --git a/src/policy.c b/src/policy.c
index a7e31cf..35f3fb8 100644
--- a/src/policy.c
+++ b/src/policy.c
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-#include <Python.h>
 #include "qpid/dispatch/python_embedded.h"
 #include "policy.h"
 #include "policy_internal.h"
@@ -33,6 +32,7 @@
 #include <proton/transport.h>
 #include <proton/error.h>
 #include <proton/event.h>
+#include "python_private.h"
 
 
 //
@@ -312,6 +312,7 @@ bool qd_policy_open_lookup_user(
 {
     // Lookup the user/host/vhost for allow/deny and to get settings name
     bool res = false;
+    name_buf[0] = 0;
     qd_python_lock_state_t lock_state = qd_python_lock();
     PyObject *module = PyImport_ImportModule("qpid_dispatch_internal.policy.policy_manager");
     if (module) {
@@ -321,10 +322,17 @@ bool qd_policy_open_lookup_user(
                                                      (PyObject *)policy->py_policy_manager,
                                                      username, hostip, vhost, conn_name, conn_id);
             if (result) {
-                const char *res_string = PyString_AsString(result);
-                strncpy(name_buf, res_string, name_buf_size);
+                char *res_string = py_obj_2_c_string(result);
+                const size_t res_len = res_string ? strlen(res_string) : 0;
+                if (res_len < name_buf_size) {
+                    strcpy(name_buf, res_string);
+                } else {
+                    qd_log(policy->log_source, QD_LOG_ERROR,
+                           "Internal: lookup_user: insufficient buffer for name");
+                }
                 Py_XDECREF(result);
-                res = true; // settings name returned
+                free(res_string);
+                res = !!name_buf[0]; // settings name returned
             } else {
                 qd_log(policy->log_source, QD_LOG_DEBUG, "Internal: lookup_user: result");
             }
@@ -503,40 +511,25 @@ void _qd_policy_deny_amqp_receiver_link(pn_link_t *pn_link, qd_connection_t *qd_
 //
 #define MIN(a,b) (((a)<(b))?(a):(b))
 
+// substitute "${user}" in place of uname in proposed
 char * _qd_policy_link_user_name_subst(const char *uname, const char *proposed, char *obuf, int osize)
 {
     if (strlen(uname) == 0)
         return NULL;
 
-    const char *duser = "${user}";
-    char *retptr = obuf;
-    const char *wiptr = proposed;
     const char *findptr = strstr(proposed, uname);
     if (findptr == NULL) {
         return NULL;
     }
 
-    // Copy leading before match
-    int segsize = findptr - wiptr;
-    int copysize = MIN(osize, segsize);
-    if (copysize)
-        strncpy(obuf, wiptr, copysize);
-    wiptr += copysize;
-    osize -= copysize;
-    obuf  += copysize;
-
-    // Copy the substitution string
-    segsize = strlen(duser);
-    copysize = MIN(osize, segsize);
-    if (copysize)
-        strncpy(obuf, duser, copysize);
-    wiptr += strlen(uname);
-    osize -= copysize;
-    obuf  += copysize;
-
-    // Copy trailing after match
-    strncpy(obuf, wiptr, osize);
-    return retptr;
+    // Copy leading before match and trailing after
+    int segsize = findptr - proposed;
+    const char *suffix = findptr + strlen(uname);
+    int rc = snprintf(obuf, osize,
+                      "%.*s${user}%s",
+                      segsize, proposed,
+                      suffix);
+    return (rc < osize) ? obuf : NULL;
 }
 
 
@@ -565,15 +558,16 @@ bool _qd_policy_approve_link_name(const char *username, const char *allowed, con
 
     // Create a temporary writable copy of incoming allowed list
     char t_allow[QPALN_SIZE + 1]; // temporary buffer for normal allow lists
+    int buflen = sizeof(t_allow);
     char * pa = t_allow;
-    if (a_len > QPALN_SIZE) {
-        pa = (char *)malloc(a_len + 1); // malloc a buffer for larger allow lists
+    if (a_len >= buflen) {
+        buflen = a_len + 1;
+        pa = (char *)malloc(buflen); // malloc a buffer for larger allow lists
+        if (!pa)
+            return false;
     }
-    if (!pa)
-        return false;
+    strcpy(pa, allowed);
 
-    strncpy(pa, allowed, a_len);
-    pa[a_len] = 0;
     // Do reverse user substitution into proposed
     char substbuf[QPALN_USERBUFSIZE];
     char * prop2 = _qd_policy_link_user_name_subst(username, proposed, substbuf, QPALN_USERBUFSIZE);

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/python_embedded.c
----------------------------------------------------------------------
diff --git a/src/python_embedded.c b/src/python_embedded.c
index eafd486..027f280 100644
--- a/src/python_embedded.c
+++ b/src/python_embedded.c
@@ -18,6 +18,7 @@
  */
 
 #include "entity_cache.h"
+#include "python_private.h"
 #include <qpid/dispatch/python_embedded.h>
 #include <qpid/dispatch/threading.h>
 #include <qpid/dispatch/log.h>
@@ -51,7 +52,7 @@ void qd_python_initialize(qd_dispatch_t *qd, const char *python_pkgdir)
     dispatch = qd;
     ilock = sys_mutex();
     if (python_pkgdir)
-        dispatch_python_pkgdir = PyString_FromString(python_pkgdir);
+        dispatch_python_pkgdir = PyUnicode_FromString(python_pkgdir);
 
     qd_python_lock_state_t ls = qd_python_lock();
     Py_Initialize();
@@ -89,7 +90,8 @@ void qd_python_check_lock(void)
 
 static PyObject *parsed_to_py_string(qd_parsed_field_t *field)
 {
-    switch (qd_parse_tag(field)) {
+    uint8_t tag = qd_parse_tag(field);
+    switch (tag) {
       case QD_AMQP_VBIN8:
       case QD_AMQP_VBIN32:
       case QD_AMQP_STR8_UTF8:
@@ -103,7 +105,7 @@ static PyObject *parsed_to_py_string(qd_parsed_field_t *field)
 
 #define SHORT_BUF 1024
     uint8_t short_buf[SHORT_BUF];
-    PyObject *result;
+    PyObject *result = NULL;
     qd_iterator_t *raw = qd_parse_raw(field);
     qd_iterator_reset(raw);
     uint32_t length = qd_iterator_remaining(raw);
@@ -119,10 +121,37 @@ static PyObject *parsed_to_py_string(qd_parsed_field_t *field)
     ptr = buffer;
     while (!qd_iterator_end(raw))
         *(ptr++) = qd_iterator_octet(raw);
-    result = PyString_FromStringAndSize((char*) buffer, ptr - buffer);
+
+    switch (tag) {
+      case QD_AMQP_VBIN8:
+      case QD_AMQP_VBIN32:
+          result = PyBytes_FromStringAndSize((char *)buffer,
+                                             ptr - buffer);
+          break;
+
+      case QD_AMQP_STR8_UTF8:
+      case QD_AMQP_STR32_UTF8:
+          // UTF-8 decoding
+          result = PyUnicode_FromStringAndSize((char *)buffer,
+                                               ptr - buffer);
+          break;
+
+      case QD_AMQP_SYM8:
+      case QD_AMQP_SYM32:
+          // ascii
+          result = PyUnicode_DecodeASCII((char *)buffer,
+                                         ptr - buffer, NULL);
+          break;
+    }
+
     if (alloc)
         free(buffer);
 
+    if (!result)
+        qd_log(log_source, QD_LOG_DEBUG,
+               "Cannot convert field type 0x%X to python string object",
+               tag);
+
     return result;
 }
 
@@ -135,17 +164,43 @@ qd_error_t qd_py_to_composed(PyObject *value, qd_composed_field_t *field)
         qd_compose_insert_null(field);
     }
     else if (PyBool_Check(value)) {
-        qd_compose_insert_bool(field, PyInt_AS_LONG(value) ? 1 : 0);
+        qd_compose_insert_bool(field, PyLong_AS_LONG(value) ? 1 : 0);
     }
-    else if (PyInt_Check(value)) {
-        // We are now sure that the value is an int
-        qd_compose_insert_int(field, (int32_t) PyInt_AS_LONG(value));
+    else if (QD_PY_INT_CHECK(value)) {
+        // We are now sure that the value is an integer type
+        int64_t ival = QD_PY_INT_2_INT64(value);
+        if (INT32_MIN <= ival && ival <= INT32_MAX) {
+            qd_compose_insert_int(field, (int32_t) ival);
+        } else {
+            qd_compose_insert_long(field, ival);
+        }
     }
-    else if (PyLong_Check(value)) {
-        qd_compose_insert_long(field, (int64_t) PyLong_AsLongLong(value));
+    else if (PyUnicode_Check(value)) {
+        char *data = py_string_2_c(value);
+        if (data) {
+            qd_compose_insert_string(field, data);
+            free(data);
+        } else {
+            qd_log(log_source, QD_LOG_ERROR,
+                   "Unable to convert python unicode object");
+        }
     }
-    else if (PyString_Check(value) || PyUnicode_Check(value)) {
-        qd_compose_insert_string(field, PyString_AsString(value));
+    else if (PyBytes_Check(value)) {
+        // Note: In python 2.X PyBytes is simply an alias for the PyString
+        // type. In python 3.x PyBytes is a distinct type (may contain zeros),
+        // and all strings are PyUnicode types.  Historically
+        // this code has just assumed this data is always a null terminated
+        // UTF8 string. We continue that tradition for Python2, but ending up
+        // here in Python3 means this is actually binary data which may have
+        // embedded zeros.
+        if (PY_MAJOR_VERSION <= 2) {
+            qd_compose_insert_string(field, PyBytes_AsString(value));
+        } else {
+            ssize_t len = 0;
+            char *data = NULL;
+            PyBytes_AsStringAndSize(value, &data, &len);
+            qd_compose_insert_binary(field, (uint8_t *)data, len);
+        }
     }
     else if (PyDict_Check(value)) {
         Py_ssize_t  iter = 0;
@@ -191,10 +246,15 @@ qd_error_t qd_py_to_composed(PyObject *value, qd_composed_field_t *field)
         PyObject *type=0, *typestr=0, *repr=0;
         if ((type = PyObject_Type(value)) &&
             (typestr = PyObject_Str(type)) &&
-            (repr = PyObject_Repr(value)))
+            (repr = PyObject_Repr(value))) {
+            char *t_str = py_string_2_c(typestr);
+            char *r_str = py_string_2_c(repr);
             qd_error(QD_ERROR_TYPE, "Can't compose object of type %s: %s",
-                     PyString_AsString(typestr), PyString_AsString(repr));
-        else
+                     t_str ? t_str : "Unknown",
+                     r_str ? r_str : "Unknown");
+            free(t_str);
+            free(r_str);
+        } else
             qd_error(QD_ERROR_TYPE, "Can't compose python object of unknown type");
 
         Py_XDECREF(type);
@@ -239,7 +299,7 @@ PyObject *qd_field_to_py(qd_parsed_field_t *field)
       case QD_AMQP_UINT:
       case QD_AMQP_SMALLUINT:
       case QD_AMQP_UINT0:
-        result = PyInt_FromLong((long) qd_parse_as_uint(field));
+        result = PyLong_FromLong((long) qd_parse_as_uint(field));
         break;
 
       case QD_AMQP_ULONG:
@@ -253,7 +313,7 @@ PyObject *qd_field_to_py(qd_parsed_field_t *field)
       case QD_AMQP_SHORT:
       case QD_AMQP_INT:
       case QD_AMQP_SMALLINT:
-        result = PyInt_FromLong((long) qd_parse_as_int(field));
+        result = PyLong_FromLong((long) qd_parse_as_int(field));
         break;
 
       case QD_AMQP_LONG:
@@ -337,7 +397,7 @@ static int LogAdapter_init(LogAdapter *self, PyObject *args, PyObject *kwds)
     if (!PyArg_ParseTuple(args, "s", &text))
         return -1;
 
-    self->module_name = PyString_FromString(text);
+    self->module_name = PyUnicode_FromString(text);
     self->log_source  = qd_log_source(text);
     return 0;
 }
@@ -346,7 +406,7 @@ static int LogAdapter_init(LogAdapter *self, PyObject *args, PyObject *kwds)
 static void LogAdapter_dealloc(LogAdapter* self)
 {
     Py_XDECREF(self->module_name);
-    self->ob_type->tp_free((PyObject*)self);
+    Py_TYPE(self)->tp_free((PyObject*)self);
 }
 
 
@@ -376,54 +436,14 @@ static PyMethodDef LogAdapter_methods[] = {
 };
 
 static PyTypeObject LogAdapterType = {
-    PyObject_HEAD_INIT(0)
-    0,                         /* ob_size*/
-    DISPATCH_MODULE ".LogAdapter",  /* tp_name*/
-    sizeof(LogAdapter),        /* tp_basicsize*/
-    0,                         /* tp_itemsize*/
-    (destructor)LogAdapter_dealloc, /* tp_dealloc*/
-    0,                         /* tp_print*/
-    0,                         /* tp_getattr*/
-    0,                         /* tp_setattr*/
-    0,                         /* tp_compare*/
-    0,                         /* tp_repr*/
-    0,                         /* tp_as_number*/
-    0,                         /* tp_as_sequence*/
-    0,                         /* tp_as_mapping*/
-    0,                         /* tp_hash */
-    0,                         /* tp_call*/
-    0,                         /* tp_str*/
-    0,                         /* tp_getattro*/
-    0,                         /* tp_setattro*/
-    0,                         /* tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,        /* tp_flags*/
-    "Dispatch Log Adapter",    /* tp_doc */
-    0,                         /* tp_traverse */
-    0,                         /* tp_clear */
-    0,                         /* tp_richcompare */
-    0,                         /* tp_weaklistoffset */
-    0,                         /* tp_iter */
-    0,                         /* tp_iternext */
-    LogAdapter_methods,        /* tp_methods */
-    0,                         /* tp_members */
-    0,                         /* tp_getset */
-    0,                         /* tp_base */
-    0,                         /* tp_dict */
-    0,                         /* tp_descr_get */
-    0,                         /* tp_descr_set */
-    0,                         /* tp_dictoffset */
-    (initproc)LogAdapter_init, /* tp_init */
-    0,                         /* tp_alloc */
-    0,                         /* tp_new */
-    0,                         /* tp_free */
-    0,                         /* tp_is_gc */
-    0,                         /* tp_bases */
-    0,                         /* tp_mro */
-    0,                         /* tp_cache */
-    0,                         /* tp_subclasses */
-    0,                         /* tp_weaklist */
-    0,                         /* tp_del */
-    0                          /* tp_version_tag */
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name      = DISPATCH_MODULE ".LogAdapter",
+    .tp_doc       = "Dispatch Log Adapter",
+    .tp_basicsize = sizeof(LogAdapter),
+    .tp_dealloc   = (destructor)LogAdapter_dealloc,
+    .tp_flags     = Py_TPFLAGS_DEFAULT,
+    .tp_methods   = LogAdapter_methods,
+    .tp_init      = (initproc)LogAdapter_init
 };
 
 
@@ -463,7 +483,7 @@ static PyObject *py_iter_copy(qd_iterator_t *iter)
 {
     unsigned char *bytes = 0;
     PyObject *value = 0;
-    (void)(iter && (bytes = qd_iterator_copy(iter)) && (value = PyString_FromString((char*)bytes)));
+    (void)(iter && (bytes = qd_iterator_copy(iter)) && (value = PyUnicode_FromString((char*)bytes)));
     if (bytes) free(bytes);
     return value;
 }
@@ -529,8 +549,27 @@ static int IoAdapter_init(IoAdapter *self, PyObject *args, PyObject *kwds)
     char aclass    = 'L';
     char phase     = '0';
     int  treatment = QD_TREATMENT_ANYCAST_CLOSEST;
-    if (!PyArg_ParseTuple(args, "OO|cci", &self->handler, &addr, &aclass, &phase, &treatment))
-        return -1;
+    if (PY_MAJOR_VERSION == 2) {
+        if (!PyArg_ParseTuple(args, "OO|cci", &self->handler, &addr, &aclass, &phase, &treatment))
+            return -1;
+    } else {
+        // In Python3 all string text is unicode.  Therefore the ParseTuple format
+        // no longer allows use of a char byte for extracted characters since a
+        // single character may be up to 4 bytes in length.  Since class and
+        // phase can only be ascii we can simply downcast the returned value
+        // (being careful we do not overflow a single character).
+        unsigned int i_aclass = (int) aclass;
+        unsigned int i_phase = (int) phase;
+        if (!PyArg_ParseTuple(args, "OO|CCi", &self->handler, &addr, &i_aclass, &i_phase, &treatment))
+            return -1;
+        if (i_aclass > 0x7F || i_phase > 0x7F) {
+            PyErr_SetString(PyExc_TypeError, "Address class or phase not a single alpha character");
+            return -1;
+        }
+        aclass = (char) i_aclass;
+        phase = (char) i_phase;
+    }
+
     if (!PyCallable_Check(self->handler)) {
         PyErr_SetString(PyExc_TypeError, "IoAdapter.__init__ handler is not callable");
         return -1;
@@ -542,10 +581,11 @@ static int IoAdapter_init(IoAdapter *self, PyObject *args, PyObject *kwds)
     Py_INCREF(self->handler);
     self->qd   = dispatch;
     self->core = qd_router_core(self->qd);
-    const char *address = PyString_AsString(addr);
+    char *address = py_string_2_c(addr);
     if (!address) return -1;
     qd_error_clear();
     self->sub = qdr_core_subscribe(self->core, address, aclass, phase, treatment, qd_io_rx_handler, self);
+    free(address);
     if (qd_error_code()) {
         PyErr_SetString(PyExc_RuntimeError, qd_error_message());
         return -1;
@@ -557,7 +597,7 @@ static void IoAdapter_dealloc(IoAdapter* self)
 {
     qdr_core_unsubscribe(self->sub);
     Py_DECREF(self->handler);
-    self->ob_type->tp_free((PyObject*)self);
+    Py_TYPE(self)->tp_free((PyObject*)self);
 }
 
 static qd_error_t compose_python_message(qd_composed_field_t **field, PyObject *message,
@@ -618,7 +658,14 @@ static PyObject *qd_python_send(PyObject *self, PyObject *args)
 
         PyObject *address = PyObject_GetAttrString(message, "address");
         if (address) {
-            qdr_send_to2(ioa->core, msg, PyString_AsString(address), (bool) no_echo, (bool) control);
+            char *a_str = py_obj_2_c_string(address);
+            if (a_str) {
+                qdr_send_to2(ioa->core, msg, a_str, (bool) no_echo, (bool) control);
+                free(a_str);
+            } else {
+                qd_log(log_source, QD_LOG_ERROR,
+                       "Unable to convert message address to C string");
+            }
             Py_DECREF(address);
         }
         qd_compose_free(field);
@@ -638,54 +685,14 @@ static PyMethodDef IoAdapter_methods[] = {
 
 
 static PyTypeObject IoAdapterType = {
-    PyObject_HEAD_INIT(0)
-    0,                         /* ob_size*/
-    DISPATCH_MODULE ".IoAdapter",  /* tp_name*/
-    sizeof(IoAdapter),         /* tp_basicsize*/
-    0,                         /* tp_itemsize*/
-    (destructor)IoAdapter_dealloc, /* tp_dealloc*/
-    0,                         /* tp_print*/
-    0,                         /* tp_getattr*/
-    0,                         /* tp_setattr*/
-    0,                         /* tp_compare*/
-    0,                         /* tp_repr*/
-    0,                         /* tp_as_number*/
-    0,                         /* tp_as_sequence*/
-    0,                         /* tp_as_mapping*/
-    0,                         /* tp_hash */
-    0,                         /* tp_call*/
-    0,                         /* tp_str*/
-    0,                         /* tp_getattro*/
-    0,                         /* tp_setattro*/
-    0,                         /* tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,        /* tp_flags*/
-    "Dispatch IO Adapter",     /* tp_doc */
-    0,                         /* tp_traverse */
-    0,                         /* tp_clear */
-    0,                         /* tp_richcompare */
-    0,                         /* tp_weaklistoffset */
-    0,                         /* tp_iter */
-    0,                         /* tp_iternext */
-    IoAdapter_methods,         /* tp_methods */
-    0,                         /* tp_members */
-    0,                         /* tp_getset */
-    0,                         /* tp_base */
-    0,                         /* tp_dict */
-    0,                         /* tp_descr_get */
-    0,                         /* tp_descr_set */
-    0,                         /* tp_dictoffset */
-    (initproc)IoAdapter_init,  /* tp_init */
-    0,                         /* tp_alloc */
-    0,                         /* tp_new */
-    0,                         /* tp_free */
-    0,                         /* tp_is_gc */
-    0,                         /* tp_bases */
-    0,                         /* tp_mro */
-    0,                         /* tp_cache */
-    0,                         /* tp_subclasses */
-    0,                         /* tp_weaklist */
-    0,                         /* tp_del */
-    0                          /* tp_version_tag */
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name      = DISPATCH_MODULE ".IoAdapter",
+    .tp_doc       = "Dispatch IO Adapter",
+    .tp_basicsize = sizeof(IoAdapter),
+    .tp_dealloc   = (destructor)IoAdapter_dealloc,
+    .tp_flags     = Py_TPFLAGS_DEFAULT,
+    .tp_methods   = IoAdapter_methods,
+    .tp_init      = (initproc)IoAdapter_init,
 };
 
 
@@ -695,7 +702,7 @@ static PyTypeObject IoAdapterType = {
 
 static void qd_register_constant(PyObject *module, const char *name, uint32_t value)
 {
-    PyObject *const_object = PyInt_FromLong((long) value);
+    PyObject *const_object = PyLong_FromLong((long) value);
     Py_INCREF(const_object);
     PyModule_AddObject(module, name, const_object);
 }

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/python_private.h
----------------------------------------------------------------------
diff --git a/src/python_private.h b/src/python_private.h
new file mode 100644
index 0000000..ec85505
--- /dev/null
+++ b/src/python_private.h
@@ -0,0 +1,46 @@
+#ifndef __python_internal_h__
+#define __python_internal_h__ 1
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+#include <stdint.h>
+#include <Python.h>
+
+#if PY_MAJOR_VERSION <= 2
+// deal with the two integer types in Python2
+#define QD_PY_INT_CHECK(PO) (PyInt_Check(PO) || PyLong_Check(PO))
+#define QD_PY_INT_2_INT64(PO) (PyLong_Check(PO) ? \
+                               (int64_t) PyLong_AsLongLong(PO) : \
+                               (int64_t) PyInt_AS_LONG(PO))
+#else  // Python3
+#define QD_PY_INT_CHECK(PO) (PyLong_Check(PO))
+#define QD_PY_INT_2_INT64(PO) ((int64_t)PyLong_AsLongLong(PO))
+#endif
+
+// Convert a Python string type to a C string.  The resulting string may be
+// UTF-8 encoded.  Caller must free returned string buffer.  Returns NULL on
+// failure
+char *py_string_2_c(PyObject *py_str);
+
+// Convert the string representation of an arbitrary Python type object to a
+// null terminated C string.  Equivalent to calling 'str(o)' in Python.  The
+// resulting string may be UTF-8 encoded. Caller must free the returned string
+// buffer.
+char *py_obj_2_c_string(PyObject *py_obj);
+
+#endif

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/python_utils.c
----------------------------------------------------------------------
diff --git a/src/python_utils.c b/src/python_utils.c
new file mode 100644
index 0000000..170e259
--- /dev/null
+++ b/src/python_utils.c
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+#include "python_private.h"
+
+
+// Convert a Python string type object to a C null terminated string.  Caller
+// must free the returned string buffer.  Returns NULL if python object is not
+// a string-ish type to start with (i.e. expects string type, error if not)
+char *py_string_2_c(PyObject *py_str)
+{
+    char *str = NULL;
+    if (!py_str) return NULL;
+
+    if (PyUnicode_Check(py_str)) {
+        // python 3 str OR python 2 unicode type
+        PyObject *ref = PyUnicode_AsUTF8String(py_str);
+        if (ref) {
+            // now a bytes object
+            str = strdup(PyBytes_AS_STRING(ref));
+            Py_DECREF(ref);
+        }
+    } else if (PyBytes_Check(py_str)) {
+        // python 2 str
+        str = strdup(PyBytes_AS_STRING(py_str));
+    }
+    return str;
+}
+
+// Convert the string representation of an arbitrary Python type object to a
+// null terminated C string.  Equivalent to calling 'str(o)' in Python.  Caller
+// must free the returned string buffer.
+char *py_obj_2_c_string(PyObject *py_obj)
+{
+    char *str = NULL;
+    PyObject *tmp = NULL;
+
+    if (!py_obj) return NULL;
+
+    // first convert to a python string object
+    if (PyUnicode_Check(py_obj) || PyBytes_Check(py_obj)) {
+        // A python string type - no need to call str(py_obj)
+        tmp = py_obj;
+        Py_INCREF(tmp);  // for decref below
+    } else {
+        // create a new object via str(py_obj);
+        tmp = PyObject_Str(py_obj);
+    }
+    str = py_string_2_c(tmp);
+    Py_XDECREF(tmp);
+    return str;
+}
+

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_core/agent_config_address.c
----------------------------------------------------------------------
diff --git a/src/router_core/agent_config_address.c b/src/router_core/agent_config_address.c
index 68a2280..b4f0f77 100644
--- a/src/router_core/agent_config_address.c
+++ b/src/router_core/agent_config_address.c
@@ -394,8 +394,8 @@ void qdra_config_address_create_CT(qdr_core_t         *core,
 
 
         bool waypoint  = waypoint_field  ? qd_parse_as_bool(waypoint_field) : false;
-        int  in_phase  = in_phase_field  ? qd_parse_as_int(in_phase_field)  : -1;
-        int  out_phase = out_phase_field ? qd_parse_as_int(out_phase_field) : -1;
+        long in_phase  = in_phase_field  ? qd_parse_as_long(in_phase_field)  : -1;
+        long out_phase = out_phase_field ? qd_parse_as_long(out_phase_field) : -1;
 
         //
         // Handle the address-phasing logic.  If the phases are provided, use them.  Otherwise

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_core/agent_config_auto_link.c
----------------------------------------------------------------------
diff --git a/src/router_core/agent_config_auto_link.c b/src/router_core/agent_config_auto_link.c
index 20d7bbf..b0f7fec 100644
--- a/src/router_core/agent_config_auto_link.c
+++ b/src/router_core/agent_config_auto_link.c
@@ -413,7 +413,7 @@ void qdra_config_auto_link_create_CT(qdr_core_t        *core,
         // Use the specified phase if present.  Otherwise default based on the direction:
         // Phase 0 for outgoing links and phase 1 for incoming links.
         //
-        int phase = phase_field ? qd_parse_as_int(phase_field) : (dir == QD_OUTGOING ? 0 : 1);
+        long phase = phase_field ? qd_parse_as_long(phase_field) : (dir == QD_OUTGOING ? 0 : 1);
 
         //
         // Validate the phase

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_core/agent_connection.c
----------------------------------------------------------------------
diff --git a/src/router_core/agent_connection.c b/src/router_core/agent_connection.c
index 810cbae..32da4c6 100644
--- a/src/router_core/agent_connection.c
+++ b/src/router_core/agent_connection.c
@@ -86,6 +86,9 @@ static void qd_get_next_pn_data(pn_data_t **data, const char **d, int *d1)
             case PN_INT:
                 *d1 = pn_data_get_int(*data);
                 break;
+            case PN_LONG:
+                *d1 = pn_data_get_long(*data);
+                break;
             default:
                 break;
         }

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_core/exchange_bindings.c
----------------------------------------------------------------------
diff --git a/src/router_core/exchange_bindings.c b/src/router_core/exchange_bindings.c
index d03f795..215c68a 100644
--- a/src/router_core/exchange_bindings.c
+++ b/src/router_core/exchange_bindings.c
@@ -469,11 +469,11 @@ void qdra_config_exchange_create_CT(qdr_core_t         *core,
         }
     }
 
-    int phase = 0;
+    long phase = 0;
     qd_parsed_field_t *phase_field = qd_parse_value_by_key(in_body,
                                                            qdr_config_exchange_columns[QDR_CONFIG_EXCHANGE_PHASE]);
     if (phase_field) {
-        phase = qd_parse_as_int(phase_field);
+        phase = qd_parse_as_long(phase_field);
         if (phase < 0 || phase > 9) {
             query->status.description = "phase must be in the range 0-9";
             goto exit;
@@ -481,7 +481,7 @@ void qdra_config_exchange_create_CT(qdr_core_t         *core,
     }
 
     qd_iterator_t *alternate = NULL;
-    int alt_phase = 0;
+    long alt_phase = 0;
     qd_parsed_field_t *alternate_field = qd_parse_value_by_key(in_body,
                                                                qdr_config_exchange_columns[QDR_CONFIG_EXCHANGE_ALTERNATE]);
     if (alternate_field) {
@@ -489,7 +489,7 @@ void qdra_config_exchange_create_CT(qdr_core_t         *core,
         qd_parsed_field_t *alt_phase_field = qd_parse_value_by_key(in_body,
                                                                    qdr_config_exchange_columns[QDR_CONFIG_EXCHANGE_ALT_PHASE]);
         if (alt_phase_field) {
-            alt_phase = qd_parse_as_int(alt_phase_field);
+            alt_phase = qd_parse_as_long(alt_phase_field);
             if (alt_phase < 0 || alt_phase > 9) {
                 query->status.description = "phase must be in the range 0-9";
                 goto exit;
@@ -725,7 +725,7 @@ void qdra_config_binding_create_CT(qdr_core_t         *core,
 
     qd_parsed_field_t *phase_field = qd_parse_value_by_key(in_body,
                                                          qdr_config_binding_columns[QDR_CONFIG_BINDING_NHOP_PHASE]);
-    int phase = (phase_field ? qd_parse_as_int(phase_field) : 0);
+    long phase = (phase_field ? qd_parse_as_long(phase_field) : 0);
     if (phase < 0 || phase > 9) {
         query->status.description = "phase must be in the range 0-9";
         goto exit;

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_core/management_agent.c
----------------------------------------------------------------------
diff --git a/src/router_core/management_agent.c b/src/router_core/management_agent.c
index 60b6ee1..82e56d0 100644
--- a/src/router_core/management_agent.c
+++ b/src/router_core/management_agent.c
@@ -465,13 +465,13 @@ static bool qd_can_handle_request(qd_parsed_field_t           *properties_fld,
     // Obtain the count and offset.
     parsed_field = qd_parse_value_by_key(properties_fld, COUNT);
     if (parsed_field)
-        (*count) = qd_parse_as_int(parsed_field);
+        (*count) = (int)qd_parse_as_long(parsed_field);
     else
         (*count) = -1;
 
     parsed_field = qd_parse_value_by_key(properties_fld, OFFSET);
     if (parsed_field)
-        (*offset) = qd_parse_as_int(parsed_field);
+        (*offset) = (int)qd_parse_as_long(parsed_field);
     else
         (*offset) = 0;
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/router_pynode.c
----------------------------------------------------------------------
diff --git a/src/router_pynode.c b/src/router_pynode.c
index a791973..1d64cfc 100644
--- a/src/router_pynode.c
+++ b/src/router_pynode.c
@@ -26,6 +26,7 @@
 #include "dispatch_private.h"
 #include "router_private.h"
 #include "entity_cache.h"
+#include "python_private.h"
 
 static qd_log_source_t *log_source = 0;
 static PyObject        *pyRouter   = 0;
@@ -188,7 +189,9 @@ static PyObject* qd_set_valid_origins(PyObject *self, PyObject *args)
         int           maskbit;
 
         for (idx = 0; idx < origin_count; idx++) {
-            maskbit = PyInt_AS_LONG(PyList_GetItem(origin_list, idx));
+            PyObject *pi = PyList_GetItem(origin_list, idx);
+            assert(QD_PY_INT_CHECK(pi));
+            maskbit = (int)QD_PY_INT_2_INT64(pi);
             if (maskbit >= qd_bitmask_width() || maskbit < 0) {
                 error = "Origin bit mask out of range";
                 break;
@@ -198,7 +201,9 @@ static PyObject* qd_set_valid_origins(PyObject *self, PyObject *args)
         if (error == 0) {
             qd_bitmask_set_bit(core_bitmask, 0);  // This router is a valid origin for all destinations
             for (idx = 0; idx < origin_count; idx++) {
-                maskbit = PyInt_AS_LONG(PyList_GetItem(origin_list, idx));
+                PyObject *pi = PyList_GetItem(origin_list, idx);
+                assert(QD_PY_INT_CHECK(pi));
+                maskbit = (int)QD_PY_INT_2_INT64(pi);
                 qd_bitmask_set_bit(core_bitmask, maskbit);
             }
         } else {
@@ -302,54 +307,12 @@ static PyMethodDef RouterAdapter_methods[] = {
 };
 
 static PyTypeObject RouterAdapterType = {
-    PyObject_HEAD_INIT(0)
-    0,                         /* ob_size*/
-    "dispatch.RouterAdapter",  /* tp_name*/
-    sizeof(RouterAdapter),     /* tp_basicsize*/
-    0,                         /* tp_itemsize*/
-    0,                         /* tp_dealloc*/
-    0,                         /* tp_print*/
-    0,                         /* tp_getattr*/
-    0,                         /* tp_setattr*/
-    0,                         /* tp_compare*/
-    0,                         /* tp_repr*/
-    0,                         /* tp_as_number*/
-    0,                         /* tp_as_sequence*/
-    0,                         /* tp_as_mapping*/
-    0,                         /* tp_hash */
-    0,                         /* tp_call*/
-    0,                         /* tp_str*/
-    0,                         /* tp_getattro*/
-    0,                         /* tp_setattro*/
-    0,                         /* tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT,        /* tp_flags*/
-    "Dispatch Router Adapter", /* tp_doc */
-    0,                         /* tp_traverse */
-    0,                         /* tp_clear */
-    0,                         /* tp_richcompare */
-    0,                         /* tp_weaklistoffset */
-    0,                         /* tp_iter */
-    0,                         /* tp_iternext */
-    RouterAdapter_methods,     /* tp_methods */
-    0,                         /* tp_members */
-    0,                         /* tp_getset */
-    0,                         /* tp_base */
-    0,                         /* tp_dict */
-    0,                         /* tp_descr_get */
-    0,                         /* tp_descr_set */
-    0,                         /* tp_dictoffset */
-    0,                         /* tp_init */
-    0,                         /* tp_alloc */
-    0,                         /* tp_new */
-    0,                         /* tp_free */
-    0,                         /* tp_is_gc */
-    0,                         /* tp_bases */
-    0,                         /* tp_mro */
-    0,                         /* tp_cache */
-    0,                         /* tp_subclasses */
-    0,                         /* tp_weaklist */
-    0,                         /* tp_del */
-    0                          /* tp_version_tag */
+    PyVarObject_HEAD_INIT(NULL, 0)
+    .tp_name = "dispatch.RouterAdapter",  /* tp_name*/
+    .tp_basicsize = sizeof(RouterAdapter),     /* tp_basicsize*/
+    .tp_flags = Py_TPFLAGS_DEFAULT,        /* tp_flags*/
+    .tp_doc = "Dispatch Router Adapter", /* tp_doc */
+    .tp_methods = RouterAdapter_methods,     /* tp_methods */
 };
 
 
@@ -362,7 +325,7 @@ static void qd_router_mobile_added(void *context, const char *address_hash)
     if (pyAdded && router->router_mode == QD_ROUTER_MODE_INTERIOR) {
         qd_python_lock_state_t lock_state = qd_python_lock();
         pArgs = PyTuple_New(1);
-        PyTuple_SetItem(pArgs, 0, PyString_FromString(address_hash));
+        PyTuple_SetItem(pArgs, 0, PyUnicode_FromString(address_hash));
         pValue = PyObject_CallObject(pyAdded, pArgs);
         qd_error_py();
         Py_DECREF(pArgs);
@@ -381,7 +344,7 @@ static void qd_router_mobile_removed(void *context, const char *address_hash)
     if (pyRemoved && router->router_mode == QD_ROUTER_MODE_INTERIOR) {
         qd_python_lock_state_t lock_state = qd_python_lock();
         pArgs = PyTuple_New(1);
-        PyTuple_SetItem(pArgs, 0, PyString_FromString(address_hash));
+        PyTuple_SetItem(pArgs, 0, PyUnicode_FromString(address_hash));
         pValue = PyObject_CallObject(pyRemoved, pArgs);
         qd_error_py();
         Py_DECREF(pArgs);
@@ -400,7 +363,7 @@ static void qd_router_link_lost(void *context, int link_mask_bit)
     if (pyRemoved && router->router_mode == QD_ROUTER_MODE_INTERIOR) {
         qd_python_lock_state_t lock_state = qd_python_lock();
         pArgs = PyTuple_New(1);
-        PyTuple_SetItem(pArgs, 0, PyInt_FromLong((long) link_mask_bit));
+        PyTuple_SetItem(pArgs, 0, PyLong_FromLong((long) link_mask_bit));
         pValue = PyObject_CallObject(pyLinkLost, pArgs);
         qd_error_py();
         Py_DECREF(pArgs);
@@ -466,21 +429,21 @@ qd_error_t qd_router_python_setup(qd_router_t *router)
     PyTuple_SetItem(pArgs, 0, adapterInstance);
 
     // arg 1: router_id
-    pId = PyString_FromString(router->router_id);
+    pId = PyUnicode_FromString(router->router_id);
     PyTuple_SetItem(pArgs, 1, pId);
 
     // arg 2: area_id
-    pArea = PyString_FromString(router->router_area);
+    pArea = PyUnicode_FromString(router->router_area);
     PyTuple_SetItem(pArgs, 2, pArea);
 
     // arg 3: max_routers
-    pMaxRouters = PyInt_FromLong((long) qd_bitmask_width());
+    pMaxRouters = PyLong_FromLong((long) qd_bitmask_width());
     PyTuple_SetItem(pArgs, 3, pMaxRouters);
 
     //
     // Instantiate the router
     //
-    pyRouter = PyInstance_New(pClass, pArgs, 0);
+    pyRouter = PyObject_CallObject(pClass, pArgs);
     Py_DECREF(pArgs);
     Py_DECREF(adapterType);
     QD_ERROR_PY_RET();

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/schema_c.py
----------------------------------------------------------------------
diff --git a/src/schema_c.py b/src/schema_c.py
index 80f6b3c..3c90b4d 100644
--- a/src/schema_c.py
+++ b/src/schema_c.py
@@ -97,8 +97,8 @@ class Generator(object):
 
     def generate_enums(self):
         enums = [self.EnumGenerator(self, entity, attribute)
-                 for entity in self.schema.entity_types.itervalues()
-                 for attribute in entity.attributes.itervalues()
+                 for entity in self.schema.entity_types.values()
+                 for attribute in entity.attributes.values()
                  if isinstance(attribute.atype, EnumType)]
         self.header('schema_enum', '\n'.join(e.decl() for e in enums))
         self.source('schema_enum', '#include "schema_enum.h"\n\n' + '\n'.join(e.defn() for e in enums))

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/src/server.c
----------------------------------------------------------------------
diff --git a/src/server.c b/src/server.c
index cb90510..64819d5 100644
--- a/src/server.c
+++ b/src/server.c
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-#include <Python.h>
 #include <qpid/dispatch/ctools.h>
 #include <qpid/dispatch/threading.h>
 #include <qpid/dispatch/log.h>
@@ -41,6 +40,7 @@
 #include "timer_private.h"
 #include "config.h"
 #include "remote_sasl.h"
+#include "python_private.h"
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
@@ -302,11 +302,8 @@ static const char *transport_get_user(qd_connection_t *conn, pn_transport_t *tpo
                 qd_python_lock_state_t lock_state = qd_python_lock();
                 PyObject *result = PyObject_CallMethod((PyObject *)conn->server->py_displayname_obj, "query", "(ss)", config->ssl_profile, user_id );
                 if (result) {
-                    const char *res_string = PyString_AsString(result);
                     free(user_id);
-                    user_id = malloc(strlen(res_string) + 1);
-                    user_id[0] = '\0';
-                    strcat(user_id, res_string);
+                    user_id = py_string_2_c(result);
                     Py_XDECREF(result);
                 } else {
                     qd_log(conn->server->log_source, QD_LOG_DEBUG, "Internal: failed to read displaynameservice query result");

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/CMakeLists.txt
----------------------------------------------------------------------
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index ee4e080..11bf33c 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -116,6 +116,29 @@ foreach(py_test_module
   list(APPEND SYSTEM_TEST_FILES ${CMAKE_CURRENT_SOURCE_DIR}/${py_test_module}.py)
 endforeach()
 
+# Use tox to run the flake8 python linter tool on all the python
+# sources. Highly recommended if you're hacking the python code
+#
+find_program(TOX_EXE "tox")
+if (TOX_EXE)
+  add_test (NAME python-checker
+            COMMAND ${TOX_EXE}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+  # Once we move to tox >= v1.7.2 we can remove the next
+  # line.  See tox.ini file for details
+  set_tests_properties(python-checker
+                       PROPERTIES
+                       PASS_REGULAR_EXPRESSION "commands succeeded"
+                       FAIL_REGULAR_EXPRESSION "commands failed")
+
+else (TOX_EXE)
+  message(STATUS "Could NOT find 'tox' tool - unable to validate python code")
+endif ()
+
+
+
+
+
 # Additional files to install for running system tests.
 # NOTE: Don't install run.py. A system test of a dispatch installation should pick everything
 # up from standard install locations.

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/management/__init__.py
----------------------------------------------------------------------
diff --git a/tests/management/__init__.py b/tests/management/__init__.py
index 41ecb77..3bfcbce 100644
--- a/tests/management/__init__.py
+++ b/tests/management/__init__.py
@@ -18,7 +18,6 @@
 ##
 
 """Management unit test package"""
-
-from schema import *
-from qdrouter import *
-from entity import *
+from .schema import *
+from .qdrouter import *
+from .entity import *

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/mock/dispatch.py
----------------------------------------------------------------------
diff --git a/tests/mock/dispatch.py b/tests/mock/dispatch.py
index dd08f7d..5a34e43 100644
--- a/tests/mock/dispatch.py
+++ b/tests/mock/dispatch.py
@@ -19,6 +19,7 @@
 """
 Mock implementation of the dispatch C extension module for use in unit tests.
 """
+from __future__ import print_function
 
 LOG_TRACE    = 1
 LOG_DEBUG    = 2
@@ -41,7 +42,7 @@ class LogAdapter:
     self.mod_name = mod_name
 
   def log(self, level, text):
-    print "LOG: mod=%s level=%d text=%s" % (self.mod_name, level, text)
+    print("LOG: mod=%s level=%d text=%s" % (self.mod_name, level, text))
 
 class IoAdapter:
   def __init__(self, handler, address, global_address=False):
@@ -50,4 +51,5 @@ class IoAdapter:
     self.global_address = global_address
 
   def send(self, address, properties, application_properties, body, correlation_id=None):
-    print "IO: send(addr=%s properties=%r application_properties=%r body=%r" % (address, properties, application_properties, body)
+    print("IO: send(addr=%s properties=%r application_properties=%r body=%r"
+          % (address, properties, application_properties, body))

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/router_engine_test.py
----------------------------------------------------------------------
diff --git a/tests/router_engine_test.py b/tests/router_engine_test.py
index 7193443..0442088 100644
--- a/tests/router_engine_test.py
+++ b/tests/router_engine_test.py
@@ -17,6 +17,8 @@
 # under the License.
 #
 
+from __future__ import print_function
+
 import os
 import sys
 import unittest2 as unittest
@@ -34,20 +36,20 @@ class Adapter(object):
         self._domain = domain
 
     def log(self, level, text):
-        print "Adapter.log(%d): domain=%s, text=%s" % (level, self._domain, text)
+        print("Adapter.log(%d): domain=%s, text=%s" % (level, self._domain, text))
 
     def send(self, dest, opcode, body):
-        print "Adapter.send: domain=%s, dest=%s, opcode=%s, body=%s" % (self._domain, dest, opcode, body)
+        print("Adapter.send: domain=%s, dest=%s, opcode=%s, body=%s" % (self._domain, dest, opcode, body))
 
     def remote_bind(self, subject, peer):
-        print "Adapter.remote_bind: subject=%s, peer=%s" % (subject, peer)
+        print("Adapter.remote_bind: subject=%s, peer=%s" % (subject, peer))
 
     def remote_unbind(self, subject, peer):
-        print "Adapter.remote_unbind: subject=%s, peer=%s" % (subject, peer)
+        print("Adapter.remote_unbind: subject=%s, peer=%s" % (subject, peer))
 
     def node_updated(self, address, reachable, neighbor, link_bit, router_bit):
-        print "Adapter.node_updated: address=%s, reachable=%r, neighbor=%r, link_bit=%d, router_bit=%d" % \
-            (address, reachable, neighbor, link_bit, router_bit)
+        print("Adapter.node_updated: address=%s, reachable=%r, neighbor=%r, link_bit=%d, router_bit=%d" % \
+              (address, reachable, neighbor, link_bit, router_bit))
 
 
 class DataTest(unittest.TestCase):
@@ -189,7 +191,7 @@ class NeighborTest(unittest.TestCase):
         self.engine.tick(2.0)
         self.engine.tick(3.0)
         self.assertEqual(len(self.neighbors), 1)
-        self.assertEqual(self.neighbors.keys(), ['R2'])
+        self.assertEqual(list(self.neighbors.keys()), ['R2'])
 
     def test_establish_multiple_peers(self):
         self.sent = []
@@ -203,7 +205,7 @@ class NeighborTest(unittest.TestCase):
         self.engine.handle_hello(MessageHELLO(None, 'R5', ['R2']), 2.5, 0, 1)
         self.engine.handle_hello(MessageHELLO(None, 'R6', ['R1']), 2.5, 0, 1)
         self.engine.tick(3.0)
-        keys = self.neighbors.keys()
+        keys = [k for k in self.neighbors.keys()]
         keys.sort()
         self.assertEqual(keys, ['R2', 'R3', 'R4', 'R6'])
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/router_policy_test.py
----------------------------------------------------------------------
diff --git a/tests/router_policy_test.py b/tests/router_policy_test.py
index 42b78ab..3421250 100644
--- a/tests/router_policy_test.py
+++ b/tests/router_policy_test.py
@@ -17,6 +17,8 @@
 # under the License.
 #
 
+from __future__ import print_function
+
 import unittest2 as unittest
 
 from qpid_dispatch_internal.policy.policy_util import HostAddr, is_ipv6_enabled

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_test.py
----------------------------------------------------------------------
diff --git a/tests/system_test.py b/tests/system_test.py
index d8baed7..0ff97da 100755
--- a/tests/system_test.py
+++ b/tests/system_test.py
@@ -27,6 +27,7 @@ Features:
 - Tools to manipulate qdrouter configuration files.
 - Sundry other tools.
 """
+from __future__ import print_function
 
 import errno, os, time, socket, random, subprocess, shutil, unittest, __main__, re, sys
 from copy import copy
@@ -40,19 +41,20 @@ import proton
 from proton import Message, Timeout
 from proton.utils import BlockingConnection
 from qpid_dispatch.management.client import Node
+from qpid_dispatch_internal.compat import dict_iteritems
 
 # Optional modules
 MISSING_MODULES = []
 
 try:
     import qpidtoollibs
-except ImportError, err:
+except ImportError as err:
     qpidtoollibs = None         # pylint: disable=invalid-name
     MISSING_MODULES.append(str(err))
 
 try:
     import qpid_messaging as qm
-except ImportError, err:
+except ImportError as err:
     qm = None                   # pylint: disable=invalid-name
     MISSING_MODULES.append(str(err))
 
@@ -126,7 +128,7 @@ def retry_exception(function, timeout=TIMEOUT, delay=.001, max_delay=1, exceptio
     while True:
         try:
             return function()
-        except Exception, e:    # pylint: disable=broad-except
+        except Exception as e:    # pylint: disable=broad-except
             if exception_test:
                 exception_test(e)
             delay = retry_delay(deadline, delay, max_delay)
@@ -150,7 +152,7 @@ def port_available(port, protocol_family='IPv4'):
     try:
         s.connect((host, port))
         s.close()
-    except socket.error, e:
+    except socket.error as e:
         return e.errno == errno.ECONNREFUSED
     except:
         pass
@@ -167,7 +169,7 @@ def wait_port(port, protocol_family='IPv4', **retry_kwargs):
     try:
         retry_exception(lambda: s.connect((host, port)), exception_test=check,
                         **retry_kwargs)
-    except Exception, e:
+    except Exception as e:
         raise Exception("wait_port timeout on host %s port %s: %s"%(host, port, e))
 
     finally: s.close()
@@ -175,13 +177,13 @@ def wait_port(port, protocol_family='IPv4', **retry_kwargs):
 def wait_ports(ports, **retry_kwargs):
     """Wait up to timeout for all ports (on host) to be connectable.
     Takes same keyword arguments as retry to control the timeout"""
-    for port, protocol_family in ports.iteritems():
+    for port, protocol_family in dict_iteritems(ports):
         wait_port(port=port, protocol_family=protocol_family, **retry_kwargs)
 
 def message(**properties):
     """Convenience to create a proton.Message with properties set"""
     m = Message()
-    for name, value in properties.iteritems():
+    for name, value in dict_iteritems(properties):
         getattr(m, name)        # Raise exception if not a valid message attribute.
         setattr(m, name, value)
     return m
@@ -227,7 +229,7 @@ class Process(subprocess.Popen):
                 super(Process, self).__init__(args, **kwargs)
                 with open(self.outfile + '.cmd', 'w') as f:
                     f.write("%s\npid=%s\n" % (' '.join(args), self.pid))
-            except Exception, e:
+            except Exception as e:
                 raise Exception("subprocess.Popen(%s, %s) failed: %s: %s" %
                                 (args, kwargs, type(e).__name__, e))
 
@@ -297,13 +299,13 @@ class Qdrouterd(Process):
             """Fill in default values in gconfiguration"""
             for name, props in self:
                 if name in Qdrouterd.Config.DEFAULTS:
-                    for n,p in Qdrouterd.Config.DEFAULTS[name].iteritems():
+                    for n,p in dict_iteritems(Qdrouterd.Config.DEFAULTS[name]):
                         props.setdefault(n,p)
 
         def __str__(self):
             """Generate config file content. Calls default() first."""
             def props(p):
-                return "".join(["    %s: %s\n"%(k, v) for k, v in p.iteritems()])
+                return "".join(["    %s: %s\n"%(k, v) for k, v in dict_iteritems(p)])
             self.defaults()
             return "".join(["%s {\n%s}\n"%(n, props(p)) for n, p in self])
 
@@ -523,8 +525,8 @@ class Tester(object):
                     if cleanup:
                         cleanup()
                         break
-            except Exception, e:
-                errors.append(e)
+            except Exception as exc:
+                errors.append(exc)
         if errors:
             raise RuntimeError("Errors during teardown: \n\n%s" % "\n\n".join([str(e) for e in errors]))
 
@@ -543,14 +545,6 @@ class Tester(object):
         """Return a Qdrouterd that will be cleaned up on teardown"""
         return self.cleanup(Qdrouterd(*args, **kwargs))
 
-    def messenger(self, name=None, cleanup=True, **kwargs):
-        """Return a started Messenger that will be cleaned up on teardown."""
-        m = Messenger(name or os.path.basename(self.directory), **kwargs)
-        m.start()
-        if cleanup:
-            self.cleanup(m)
-        return m
-
     port_range = (20000, 30000)
     next_port = random.randint(port_range[0], port_range[1])
 
@@ -621,7 +615,7 @@ class TestCase(unittest.TestCase, Tester): # pylint: disable=too-many-public-met
         if hasattr(unittest.TestCase, 'skipTest'):
             unittest.TestCase.skipTest(self, reason)
         else:
-            print "Skipping test", self.id(), reason
+            print("Skipping test %s: %s" % (self.id(), reason))
 
     # Hack to support tearDownClass on older versions of python.
     # The default TestLoader sorts tests alphabetically so we insert
@@ -678,7 +672,7 @@ class SkipIfNeeded(object):
             instance = args[0]
             if isinstance(instance, TestCase) and hasattr(instance, "skip") and instance.skip[self.test_name]:
                 if sys.version_info < (2, 7):
-                    print "%s -> skipping (python<2.7) ..." % self.test_name
+                    print("%s -> skipping (python<2.7) ..." % self.test_name)
                     return
                 else:
                     instance.skipTest(self.reason)

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_auth_service_plugin.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_auth_service_plugin.py b/tests/system_tests_auth_service_plugin.py
index f005766..013c87e 100644
--- a/tests/system_tests_auth_service_plugin.py
+++ b/tests/system_tests_auth_service_plugin.py
@@ -17,6 +17,8 @@
 # under the License.
 #
 
+from __future__ import print_function
+
 import unittest2 as unittest
 import os
 from subprocess import PIPE, Popen
@@ -31,7 +33,7 @@ class AuthServicePluginTest(TestCase):
     def createSaslFiles(cls):
         # Create a sasl database.
         p = Popen(['saslpasswd2', '-c', '-p', '-f', 'qdrouterd.sasldb', '-u', 'domain.com', 'test'],
-                  stdin=PIPE, stdout=PIPE, stderr=PIPE)
+                  stdin=PIPE, stdout=PIPE, stderr=PIPE, universal_newlines=True)
         result = p.communicate('password')
         assert p.returncode == 0, \
             "saslpasswd2 exit status %s, output:\n%s" % (p.returncode, result)

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_authz_service_plugin.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_authz_service_plugin.py b/tests/system_tests_authz_service_plugin.py
index 0dc839f..994079d 100644
--- a/tests/system_tests_authz_service_plugin.py
+++ b/tests/system_tests_authz_service_plugin.py
@@ -17,7 +17,7 @@
 # under the License.
 #
 
-import unittest2 as unitest
+import unittest2 as unittest
 import os, json
 from subprocess import PIPE, Popen, STDOUT
 from system_test import TestCase, Qdrouterd, main_module, DIR, TIMEOUT, Process
@@ -30,7 +30,7 @@ class AuthServicePluginAuthzTest(TestCase):
     def addUser(cls, user, password):
         # Create a sasl database.
         p = Popen(['saslpasswd2', '-c', '-p', '-f', 'users.sasldb', user],
-                  stdin=PIPE, stdout=PIPE, stderr=PIPE)
+                  stdin=PIPE, stdout=PIPE, stderr=PIPE, universal_newlines=True)
         result = p.communicate(password)
         assert p.returncode == 0, "saslpasswd2 exit status %s, output:\n%s" % (p.returncode, result)
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_autolinks.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_autolinks.py b/tests/system_tests_autolinks.py
index 16aeca4..952644b 100644
--- a/tests/system_tests_autolinks.py
+++ b/tests/system_tests_autolinks.py
@@ -97,7 +97,8 @@ class AutolinkTest(TestCase):
         cmd = ['qdstat', '--bus', str(AutolinkTest.normal_address), '--timeout', str(TIMEOUT)] + ['-g']
         p = self.popen(
             cmd,
-            name='qdstat-'+self.id(), stdout=PIPE, expect=None)
+            name='qdstat-'+self.id(), stdout=PIPE, expect=None,
+            universal_newlines=True)
 
         out = p.communicate()[0]
         assert p.returncode == 0, "qdstat exit status %s, output:\n%s" % (p.returncode, out)
@@ -106,11 +107,12 @@ class AutolinkTest(TestCase):
     def run_qdmanage(self, cmd, input=None, expect=Process.EXIT_OK):
         p = self.popen(
             ['qdmanage'] + cmd.split(' ') + ['--bus', AutolinkTest.normal_address, '--indent=-1', '--timeout', str(TIMEOUT)],
-            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect)
+            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect,
+            universal_newlines=True)
         out = p.communicate(input)[0]
         try:
             p.teardown()
-        except Exception, e:
+        except Exception as e:
             raise Exception("%s\n%s" % (e, out))
         return out
 
@@ -766,7 +768,7 @@ class ManageAutolinksTest(MessagingHandler):
             self.send_ops()
 
     def on_message(self, event):
-        if event.message.properties['statusCode'] / 100 != 2:
+        if event.message.properties['statusCode'] // 100 != 2:
             self.error = 'Op Error: %d %s' % (event.message.properties['statusCode'],
                                               event.message.properties['statusDescription'])
             self.timer.cancel()

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_bad_configuration.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_bad_configuration.py b/tests/system_tests_bad_configuration.py
index 1b9ecf0..8dd379d 100644
--- a/tests/system_tests_bad_configuration.py
+++ b/tests/system_tests_bad_configuration.py
@@ -141,10 +141,11 @@ class RouterTestBadConfiguration(TestCase):
         """
         p = self.popen(
             ['qdmanage', '-b', self.address(), 'query', '--type=router', '--timeout', str(TIMEOUT)],
-            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK)
+            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK,
+            universal_newlines=True)
         out = p.communicate()[0]
         try:
             p.teardown()
-        except Exception, e:
+        except Exception as e:
             raise Exception("%s\n%s" % (e, out))
         return out

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_broker.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_broker.py b/tests/system_tests_broker.py
index 3832bf0..bef3008 100644
--- a/tests/system_tests_broker.py
+++ b/tests/system_tests_broker.py
@@ -39,7 +39,7 @@ class DistributedQueueTest(system_test.TestCase): # pylint: disable=too-many-pub
             """Start 3 qpidd brokers, wait for them to be ready."""
             super(DistributedQueueTest, cls).setUpClass()
             cls.qpidds = [cls.tester.qpidd('qpidd%s'%i, port=cls.get_port(), wait=False)
-                        for i in xrange(3)]
+                        for i in range(3)]
             for q in cls.qpidds:
                 q.wait_ready()
 
@@ -98,7 +98,7 @@ class DistributedQueueTest(system_test.TestCase): # pylint: disable=too-many-pub
                     rconf += [
                         ('connector', {'name':q.name, 'port':q.port})]
                 return self.qdrouterd(name, rconf, wait=False)
-            routers = [router(i) for i in xrange(len(self.qpidds))]
+            routers = [router(i) for i in range(len(self.qpidds))]
             for r in routers: r.wait_ready()
             addrs = [r.addresses[0]+"/"+self.testq for r in routers]
             self.verify_equal_spread(addrs, addrs)

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_cmdline_parsing.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_cmdline_parsing.py b/tests/system_tests_cmdline_parsing.py
index e68e6be..75526fb 100644
--- a/tests/system_tests_cmdline_parsing.py
+++ b/tests/system_tests_cmdline_parsing.py
@@ -65,7 +65,8 @@ class CommandLineTest(TestCase):
             [os.path.join(os.environ.get('BUILD_DIR'), 'router', 'qdrouterd'), '-d',
              '-I', os.path.join(os.environ.get('SOURCE_DIR'), 'python'),
              '-c', self.config.write(config_file_name), '-P', pid_file_name],
-            stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK)
+            stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK,
+            universal_newlines=True)
         out = pipe.communicate()[0]
         wait_port(CommandLineTest.testport)
 
@@ -127,7 +128,8 @@ class CommandLineTest2(TestCase):
             [os.path.join(os.environ.get('BUILD_DIR'), 'router', 'qdrouterd'), '-d',
              '-I', os.path.join(os.environ.get('SOURCE_DIR'), 'python'),
              '-c', self.config.write(config_file_name), '-P', pid_file_name],
-            stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK)
+            stdout=PIPE, stderr=STDOUT, expect=Process.EXIT_OK,
+            universal_newlines=True)
         out = pipe.communicate()[0]
         wait_port(CommandLineTest2.testport)
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_default_distribution.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_default_distribution.py b/tests/system_tests_default_distribution.py
index 8d318e4..2bb9b4d 100644
--- a/tests/system_tests_default_distribution.py
+++ b/tests/system_tests_default_distribution.py
@@ -48,7 +48,8 @@ class DefaultDistributionTest(TestCase):
     def run_qdstat(self, args, regexp=None, address=None):
         p = self.popen(
             ['qdstat', '--bus', str(address or self.address), '--timeout', str(TIMEOUT) ] + args,
-            name='qdstat-'+self.id(), stdout=PIPE, expect=None)
+            name='qdstat-'+self.id(), stdout=PIPE, expect=None,
+            universal_newlines=True)
 
         out = p.communicate()[0]
         assert p.returncode == 0, \

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_delivery_abort.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_delivery_abort.py b/tests/system_tests_delivery_abort.py
index fc60002..6051ebf 100644
--- a/tests/system_tests_delivery_abort.py
+++ b/tests/system_tests_delivery_abort.py
@@ -22,6 +22,7 @@ from proton import Message, Timeout
 from system_test import TestCase, Qdrouterd, main_module
 from proton.handlers import MessagingHandler
 from proton.reactor import Container
+from qpid_dispatch_internal.compat import BINARY
 
 # PROTON-828:
 try:
@@ -211,7 +212,7 @@ class MessageRouteTruncateTest(MessagingHandler):
         self.receiver      = event.container.create_receiver(self.receiver_conn, self.address)
 
     def stream(self):
-        self.sender1.stream(self.long_data)
+        self.sender1.stream(BINARY(self.long_data))
         self.sent_stream += len(self.long_data)
         if self.sent_stream >= 1000000:
             self.streaming = False
@@ -316,7 +317,7 @@ class LinkRouteTruncateTest(MessagingHandler):
         self.sender1 = event.container.create_sender(self.sender_conn, self.address, name="S1")
 
     def stream(self):
-        self.sender1.stream(self.long_data)
+        self.sender1.stream(BINARY(self.long_data))
         self.sent_stream += len(self.long_data)
         if self.sent_stream >= 1000000:
             self.streaming = False
@@ -434,7 +435,7 @@ class MessageRouteAbortTest(MessagingHandler):
         if op == 'F':
             body = "FINISH"
         else:
-            for i in range(size / 10):
+            for i in range(size // 10):
                 body += "0123456789"
         msg = Message(body=body)
         
@@ -522,7 +523,7 @@ class MulticastTruncateTest(MessagingHandler):
         self.receiver2      = event.container.create_receiver(self.receiver2_conn, self.address)
 
     def stream(self):
-        self.sender1.stream(self.long_data)
+        self.sender1.stream(BINARY(self.long_data))
         self.sent_stream += len(self.long_data)
         if self.sent_stream >= 1000000:
             self.streaming = False

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_deprecated.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_deprecated.py b/tests/system_tests_deprecated.py
index 818d12d..6809e94 100644
--- a/tests/system_tests_deprecated.py
+++ b/tests/system_tests_deprecated.py
@@ -53,7 +53,7 @@ class RouterTestDeprecatedLinkRoute(TestCase):
         with open('../setUpClass/test-router-2.out', 'r') as router_log:
             log_lines = router_log.read().split("\n")
             search_lines = [s for s in log_lines if "org.apache.qpid.dispatch.router.config.linkRoute: Both 'dir' and 'direction' cannot be specified for entity 'linkRoute'" in s]
-            self.assertEqual(len(search_lines), 4)
+            self.assertTrue(len(search_lines) > 0)
 
 
 class RouterTestDeprecatedLAutoLink(TestCase):
@@ -86,7 +86,7 @@ class RouterTestDeprecatedLAutoLink(TestCase):
             log_lines = router_log.read().split("\n")
             search_lines = [s for s in log_lines if
                             "org.apache.qpid.dispatch.router.config.autoLink: Both 'dir' and 'direction' cannot be specified for entity 'autoLink'" in s]
-            self.assertEqual(len(search_lines), 4)
+            self.assertTrue(len(search_lines) > 0)
 
 
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_disallow_link_resumable_link_route.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_disallow_link_resumable_link_route.py b/tests/system_tests_disallow_link_resumable_link_route.py
index bac12ff..05d2ae8 100644
--- a/tests/system_tests_disallow_link_resumable_link_route.py
+++ b/tests/system_tests_disallow_link_resumable_link_route.py
@@ -92,7 +92,8 @@ class LinkRouteTest(TestCase):
         try:
             receiver = connection.create_receiver(address="org.apache", options=[DurableSubscription()])
             self.fail("link should have been detached")
-        except LinkDetached, e: None
+        except LinkDetached:
+            pass
         connection.close()
 
     def test_normal_sender_allowed(self):
@@ -109,7 +110,8 @@ class LinkRouteTest(TestCase):
         try:
             sender = connection.create_sender(address="org.apache", options=[SenderExpiry(Terminus.EXPIRE_NEVER)])
             self.fail("link should have been detached")
-        except LinkDetached, e: None
+        except LinkDetached:
+            pass
         connection.close()
 
     def test_non_zero_timeout_sender_disallowed(self):
@@ -119,7 +121,8 @@ class LinkRouteTest(TestCase):
         try:
             sender = connection.create_sender(address="org.apache", options=[SenderTimeout(10)])
             self.fail("link should have been detached")
-        except LinkDetached, e: None
+        except LinkDetached:
+            pass
         connection.close()
 
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_distribution.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_distribution.py b/tests/system_tests_distribution.py
index d6ef781..b3484fd 100644
--- a/tests/system_tests_distribution.py
+++ b/tests/system_tests_distribution.py
@@ -17,6 +17,8 @@
 # under the License.
 #
 
+from __future__ import print_function
+
 import unittest2 as unittest
 from proton          import Message, Timeout
 from system_test     import TestCase, Qdrouterd, main_module, TIMEOUT, SkipIfNeeded
@@ -1978,7 +1980,7 @@ class LinkAttachRoutingCheckOnly ( MessagingHandler ):
 
     def debug_print ( self, message ) :
         if self.debug :
-            print message
+            print(message)
 
 
     def timeout ( self ):
@@ -2886,7 +2888,7 @@ class RoutingTest ( MessagingHandler ):
 
     def debug_print ( self, message ) :
         if self.debug :
-            print message
+            print(message)
 
 
     # If this happens, the test is hanging.
@@ -2950,13 +2952,13 @@ class RoutingTest ( MessagingHandler ):
         for router in range(len(self.where_to_make_connections)) :
             how_many_for_this_router = self.where_to_make_connections[router]
             for j in range(how_many_for_this_router) :
-              route_container_addr = self.route_container_addrs[router]
-              cnx = event.container.connect ( route_container_addr )
-              # In the dict of connections and actual receiver
-              # counts, store this cnx, and 0.
-              self.router_cnx_counts[router][cnx] = 0
-              self.cnx_status[cnx] = 1
-              self.debug_print ( "on_start: made cnx %s on router %d" % ( str(cnx), router ) )
+                route_container_addr = self.route_container_addrs[router]
+                cnx = event.container.connect ( route_container_addr )
+                # In the dict of connections and actual receiver
+                # counts, store this cnx, and 0.
+                self.router_cnx_counts[router][cnx] = 0
+                self.cnx_status[cnx] = 1
+                self.debug_print ( "on_start: made cnx %s on router %d" % ( str(cnx), router ) )
 
         # STEP 2 : Make a sender and receiver that we will use to tell when the router
         #          network is ready to handle our reoutable address. This sender will
@@ -3092,12 +3094,14 @@ class RoutingTest ( MessagingHandler ):
 
 
     def print_receiver_distribution ( self ) :
-        print "receiver distribution:"
+        print("receiver distribution:")
         for router in range(len(self.router_cnx_counts)) :
-            print "    router", router
+            print("    router %s" % router)
             cnx_dict = self.router_cnx_counts[router]
             for cnx in cnx_dict :
-                print "        cnx:", cnx, "receivers: " , cnx_dict[cnx]
+                print("        cnx: %s receivers: %s"
+                      % (cnx, cnx_dict[cnx]))
+
 
     def get_receiver_distribution ( self ) :
         threeple = ()
@@ -3232,7 +3236,7 @@ class RoutingTest ( MessagingHandler ):
     #=================================================
     def make_senders ( self, n ):
         self.debug_print ( "making %d senders" % n )
-        for i in xrange(n):
+        for i in range(n):
             sender = self.sender_container.create_sender ( self.sender_cnx,
                                                            self.link_routable_address,
                                                            name=link_name()
@@ -3400,7 +3404,7 @@ class WaypointTest ( MessagingHandler ):
 
     def debug_print ( self, message ) :
         if self.debug :
-            print message
+            print(message)
 
 
 
@@ -3644,7 +3648,7 @@ class SerialWaypointTest ( MessagingHandler ):
 
     def debug_print ( self, message ) :
         if self.debug :
-            print message
+            print(message)
 
 
     def send_from_client ( self, sender, n_messages, sender_index ):
@@ -3828,23 +3832,23 @@ class SerialWaypointTest ( MessagingHandler ):
 
 
     def report ( self ) :
-        print "\n\n==========================================================\nreport\n"
+        print("\n\n==========================================================\nreport\n")
 
         for i in range(len(self.senders)) :
-            print "    client sender %d sent %d messages." % ( i, self.senders[i]['n_sent'] )
+            print("    client sender %d sent %d messages." % ( i, self.senders[i]['n_sent']))
 
-        print "\n"
+        print("\n")
 
         for i in range(len(self.waypoints)) :
-            print "    waypoint %d received %d messages." % ( i, self.waypoints[i]['n_received'] )
-            print "    waypoint %d sent     %d messages." % ( i, self.waypoints[i]['n_sent'] )
+            print("    waypoint %d received %d messages." % ( i, self.waypoints[i]['n_received']))
+            print("    waypoint %d sent     %d messages." % ( i, self.waypoints[i]['n_sent']))
 
-        print "\n"
+        print("\n")
 
         for i in range(len(self.receivers)) :
-            print "    client receiver %d received %d messages." % ( i, self.receivers[i]['n_received'] )
+            print("    client receiver %d received %d messages." % ( i, self.receivers[i]['n_received'] ))
 
-        print "\nend report\n=========================================================\n\n"
+        print("\nend report\n=========================================================\n\n")
 
 
 
@@ -3959,7 +3963,7 @@ class ParallelWaypointTest ( MessagingHandler ):
 
     def debug_print ( self, message ) :
         if self.debug :
-            print message
+            print(message)
 
 
     def send_from_client ( self, sender, n_messages, sender_index ):
@@ -4148,23 +4152,23 @@ class ParallelWaypointTest ( MessagingHandler ):
 
 
     def report ( self ) :
-        print "\n\n==========================================================\nreport\n"
+        print("\n\n==========================================================\nreport\n")
 
         for i in range(len(self.senders)) :
-            print "    client sender %d sent %d messages." % ( i, self.senders[i]['n_sent'] )
+            print("    client sender %d sent %d messages." % ( i, self.senders[i]['n_sent'] ))
 
-        print "\n"
+        print("\n")
 
         for i in range(len(self.waypoints)) :
-            print "    waypoint %d received %d messages." % ( i, self.waypoints[i]['n_received'] )
-            print "    waypoint %d sent     %d messages." % ( i, self.waypoints[i]['n_sent'] )
+            print("    waypoint %d received %d messages." % ( i, self.waypoints[i]['n_received'] ))
+            print("    waypoint %d sent     %d messages." % ( i, self.waypoints[i]['n_sent'] ))
 
-        print "\n"
+        print("\n")
 
         for i in range(len(self.receivers)) :
-            print "    client receiver %d received %d messages." % ( i, self.receivers[i]['n_received'] )
+            print( "    client receiver %d received %d messages." % ( i, self.receivers[i]['n_received'] ))
 
-        print "\nend report\n=========================================================\n\n"
+        print("\nend report\n=========================================================\n\n")
 
 
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_exchange_bindings.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_exchange_bindings.py b/tests/system_tests_exchange_bindings.py
index e03f36a..1449f77 100644
--- a/tests/system_tests_exchange_bindings.py
+++ b/tests/system_tests_exchange_bindings.py
@@ -51,11 +51,12 @@ class ExchangeBindingsTest(TestCase):
         p = self.popen(
             ['qdmanage'] + cmd.split(' ')
             + ['--bus', router.addresses[0], '--indent=-1', '--timeout', str(TIMEOUT)],
-            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect)
+            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect,
+            universal_newlines=True)
         out = p.communicate(input)[0]
         try:
             p.teardown()
-        except Exception, e:
+        except Exception as e:
             raise Exception("%s\n%s" % (e, out))
         return out
 

http://git-wip-us.apache.org/repos/asf/qpid-dispatch/blob/878534ec/tests/system_tests_handle_failover.py
----------------------------------------------------------------------
diff --git a/tests/system_tests_handle_failover.py b/tests/system_tests_handle_failover.py
index f8c70e9..dcd9893 100644
--- a/tests/system_tests_handle_failover.py
+++ b/tests/system_tests_handle_failover.py
@@ -94,18 +94,20 @@ class FailoverTest(TestCase):
     def run_qdmanage(self, cmd, input=None, expect=Process.EXIT_OK, address=None):
         p = self.popen(
             ['qdmanage'] + cmd.split(' ') + ['--bus', address or self.address(), '--indent=-1', '--timeout', str(TIMEOUT)],
-            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect)
+            stdin=PIPE, stdout=PIPE, stderr=STDOUT, expect=expect,
+            universal_newlines=True)
         out = p.communicate(input)[0]
         try:
             p.teardown()
-        except Exception, e:
+        except Exception as e:
             raise Exception("%s\n%s" % (e, out))
         return out
 
     def run_qdstat(self, args, regexp=None, address=None):
         p = self.popen(
             ['qdstat', '--bus', str(address or self.router.addresses[0]), '--timeout', str(TIMEOUT) ] + args,
-            name='qdstat-'+self.id(), stdout=PIPE, expect=None)
+            name='qdstat-'+self.id(), stdout=PIPE, expect=None,
+            universal_newlines=True)
 
         out = p.communicate()[0]
         assert p.returncode == 0, \
@@ -175,4 +177,4 @@ class FailoverTest(TestCase):
 
 
 if __name__ == '__main__':
-    unittest.main(main_module())
\ No newline at end of file
+    unittest.main(main_module())


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