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Posted to dev@ws.apache.org by "Jochen Wiedmann (JIRA)" <ji...@apache.org> on 2011/01/25 00:11:44 UTC
[jira] Resolved: (XMLRPC-169) XmlRpcSunHttpTransport creates a new
connection for every request.
[ https://issues.apache.org/jira/browse/XMLRPC-169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jochen Wiedmann resolved XMLRPC-169.
------------------------------------
Resolution: Fixed
Fix Version/s: 3.1.4
Assignee: Jochen Wiedmann
Applied.
> XmlRpcSunHttpTransport creates a new connection for every request.
> ------------------------------------------------------------------
>
> Key: XMLRPC-169
> URL: https://issues.apache.org/jira/browse/XMLRPC-169
> Project: XML-RPC
> Issue Type: Improvement
> Components: Source
> Affects Versions: 3.1.3
> Environment: Solaris
> Reporter: Alan Burlison
> Assignee: Jochen Wiedmann
> Priority: Minor
> Fix For: 3.1.4
>
> Attachments: XMLRPC-169.patch
>
>
> An instance of XmlRpcSunHttpTransport creates a new connection to the server for every request that is made via it. That's *horrendously* expensive where the connection is a SSL connection.
> Here's a trace, note the repeated connect() calls.
> /2: connect(20, 0xFE32E4D0, 32, SOV_DEFAULT) = 0
> /2: getsockname(20, 0xFE32E4D0, 0xFE32E618, SOV_DEFAULT) = 0
> /2: setsockopt(20, tcp, TCP_NODELAY, 0xFE32E768, 4, SOV_DEFAULT) = 0
> /2: send(20, " P O S T / H T T P /".., 283, 0) = 283
> /2: send(20, " < ? x m l v e r s i o".., 215, 0) = 215
> /2: read(20, " H T T P / 1 . 0 2 0 0".., 8192) = 84
> /2: read(20, " < ? x m l v e r s i o".., 8108) = 202
> /2: ioctl(20, FIONREAD, 0xFE32E684) = 0
> /2: fcntl(21, F_DUP2FD, 0x00000014) = 20
> /2: close(20) = 0
> /2: so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, 0x00000000, SOV_DEFAULT) = 20
> /2: connect(20, 0xFE32E4D0, 32, SOV_DEFAULT) = 0
> /2: getsockname(20, 0xFE32E4D0, 0xFE32E618, SOV_DEFAULT) = 0
> /2: setsockopt(20, tcp, TCP_NODELAY, 0xFE32E768, 4, SOV_DEFAULT) = 0
> /2: send(20, " P O S T / H T T P /".., 283, 0) = 283
> /2: send(20, " < ? x m l v e r s i o".., 215, 0) = 215
> /2: read(20, " H T T P / 1 . 0 2 0 0".., 8192) = 84
> /2: read(20, " < ? x m l v e r s i o".., 8108) = 202
> /2: ioctl(20, FIONREAD, 0xFE32E684) = 0
> /2: fcntl(21, F_DUP2FD, 0x00000014) = 20
> /2: close(20) = 0
> /2: so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, 0x00000000, SOV_DEFAULT) = 20
> /2: connect(20, 0xFE32E4D0, 32, SOV_DEFAULT) = 0
> /2: getsockname(20, 0xFE32E4D0, 0xFE32E618, SOV_DEFAULT) = 0
> /2: setsockopt(20, tcp, TCP_NODELAY, 0xFE32E768, 4, SOV_DEFAULT) = 0
> /2: send(20, " P O S T / H T T P /".., 283, 0) = 283
> /2: send(20, " < ? x m l v e r s i o".., 215, 0) = 215
> /2: read(20, " H T T P / 1 . 0 2 0 0".., 8192) = 84
> /2: read(20, " < ? x m l v e r s i o".., 8108) = 202
> /2: ioctl(20, FIONREAD, 0xFE32E684) = 0
> /2: fcntl(21, F_DUP2FD, 0x00000014) = 20
> /2: close(20) = 0
> /2: so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, 0x00000000, SOV_DEFAULT) = 20
> /2: connect(20, 0xFE32E4D0, 32, SOV_DEFAULT) = 0
> /2: getsockname(20, 0xFE32E4D0, 0xFE32E618, SOV_DEFAULT) = 0
> /2: setsockopt(20, tcp, TCP_NODELAY, 0xFE32E768, 4, SOV_DEFAULT) = 0
> /2: send(20, " P O S T / H T T P /".., 283, 0) = 283
> /2: send(20, " < ? x m l v e r s i o".., 215, 0) = 215
> /2: read(20, " H T T P / 1 . 0 2 0 0".., 8192) = 84
> /2: read(20, " < ? x m l v e r s i o".., 8108) = 202
> /2: ioctl(20, FIONREAD, 0xFE32E684) = 0
> /2: fcntl(21, F_DUP2FD, 0x00000014) = 20
> /2: close(20) = 0
> And if you assume that a major use of the Apache XML-RPC client is with the Apache XML-RPC server, it means the keepalive support in the server is pretty much a waste of time.
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