[GitHub] thrift pull request: Facebook's THeader protocol and transport for...

[djwatson <gi...@git.apache.org>]

Github user djwatson commented on a diff in the pull request:

    https://github.com/apache/thrift/pull/357#discussion_r25187923
  
    --- Diff: lib/cpp/src/thrift/transport/THeaderTransport.h ---
    @@ -0,0 +1,308 @@
    +/*
    + * 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.
    + */
    +
    +#ifndef THRIFT_TRANSPORT_THEADERTRANSPORT_H_
    +#define THRIFT_TRANSPORT_THEADERTRANSPORT_H_ 1
    +
    +#include <tr1/functional>
    +
    +#include <thrift/protocol/TBinaryProtocol.h>
    +#include <thrift/protocol/TProtocolTypes.h>
    +#include <thrift/transport/TBufferTransports.h>
    +#include <thrift/transport/TTransport.h>
    +#include <thrift/transport/TVirtualTransport.h>
    +
    +#include <bitset>
    +#include "boost/scoped_array.hpp"
    +#include <pwd.h>
    +#include <unistd.h>
    +
    +// Don't include the unknown client.
    +#define CLIENT_TYPES_LEN 4
    +
    +enum CLIENT_TYPE {
    +  THRIFT_HEADER_CLIENT_TYPE = 0,
    +  THRIFT_FRAMED_DEPRECATED = 1,
    +  THRIFT_UNFRAMED_DEPRECATED = 2,
    +  THRIFT_UNKNOWN_CLIENT_TYPE = 4,
    +};
    +
    +namespace apache { namespace thrift { namespace transport {
    +
    +using apache::thrift::protocol::T_COMPACT_PROTOCOL;
    +
    +/**
    + * Header transport. All writes go into an in-memory buffer until flush is
    + * called, at which point the transport writes the length of the entire
    + * binary chunk followed by the data payload. This allows the receiver on the
    + * other end to always do fixed-length reads.
    + *
    + * Subclass TFramedTransport because most of the read/write methods are similar
    --- End diff --
    
    Having a TFramedTransport as a member is harder than it seems - THeaderTransport should probably inherit from TBufferedTransport, but then we'd have two TBufferedTransports, one for header and one for framed, to make work together somehow.  I could just copy in TFramedTransport::readSlow I guess


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