[sr-dev] git:sr_3.0: tcp: force eof after read if write side hangup

Module: sip-router Branch: sr_3.0 Commit: 8fafff8a11a3d643de47f8d1f389d0c5e6316beb URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=8fafff8… Author: Andrei Pelinescu-Onciul &lt;andrei(a)iptel.org&gt; Committer: Andrei Pelinescu-Onciul &lt;andrei(a)iptel.org&gt; Date: Sun Jun 20 19:40:55 2010 +0200 tcp: force eof after read if write side hangup Even if POLLRDHUP is not supported, but we detected a write side close (POLLHUP) or an error (POLLERR) or such an event was previously detected by tcp_main (F_CONN_EOF_SEEN), force connection closing after reading all the data in the socket buffer. In this case we can close() after the first short read and we save an extra system call (a read() that returns 0). (cherry picked from commit 28e313250503d6f8d06ebab15c8421c40e7f0fe4) --- tcp_read.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/tcp_read.c b/tcp_read.c index d201765..9015a8b 100644 --- a/tcp_read.c +++ b/tcp_read.c @@ -970,13 +970,13 @@ again: con, con->id, atomic_get(&con->refcnt)); goto read_error; } + read_flags=(( #ifdef POLLRDHUP - read_flags=(((events & POLLRDHUP) | + (events & POLLRDHUP) | +#endif /* POLLRDHUP */ + (events & (POLLHUP|POLLERR)) | (con->flags & (F_CONN_EOF_SEEN|F_CONN_FORCE_EOF))) && !(events & POLLPRI))? RD_CONN_FORCE_EOF: 0; -#else /* POLLRDHUP */ - read_flags=0; -#endif /* POLLRDHUP */ resp=tcp_read_req(con, &ret, &read_flags); if (unlikely(resp<0)){ read_error: