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http: response body often missing after specific request

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This patch works around a problem with the HTTP body
being dropped from the response to a specific client
and under specific circumstances:

a) Client request comes from node.js user agent
   "Shred" via use of swagger-client library.

b) Asterisk and Client are *not* on the same
   host or TCP/IP stack

In testing this problem, it has been determined that
the write of the HTTP body is lost, even if the data
is written using low level write function.  The only
solution found is to instruct the TCP stack with the
shutdown function to flush the last write and finish
the transmission.  See review for more details.


ASTERISK-23548 #close
(closes issue ASTERISK-23548)
Reported by: Sam Galarneau
Review: https://reviewboard.asterisk.org/r/3402/
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Merged revisions 411462 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 411463 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 411465 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@411469 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Scott Griepentrog
2014-03-28 16:18:56 +00:00
parent 2cfa9b4b77
commit 0d057e6791
3 changed files with 32 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
main/tcptls.c
View File

@@ -625,12 +625,22 @@ error:
void ast_tcptls_close_session_file(struct ast_tcptls_session_instance *tcptls_session)
{
if (tcptls_session->f) {
/*
* Issuing shutdown() is necessary here to avoid a race
* condition where the last data written may not appear
* in the TCP stream. See ASTERISK-23548
*/
fflush(tcptls_session->f);
if (tcptls_session->fd != -1) {
shutdown(tcptls_session->fd, SHUT_RDWR);
}
if (fclose(tcptls_session->f)) {
ast_log(LOG_ERROR, "fclose() failed: %s\n", strerror(errno));
}
tcptls_session->f = NULL;
tcptls_session->fd = -1;
} else if (tcptls_session->fd != -1) {
shutdown(tcptls_session->fd, SHUT_RDWR);
if (close(tcptls_session->fd)) {
ast_log(LOG_ERROR, "close() failed: %s\n", strerror(errno));
}