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[MINOR] session: try to emit a 500 response on memory allocation errors

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When we fail to create a session because of memory shortage, let's at
least try to send a 500 message directly on the socket. Even if we don't
have any buffers left, the kernel's orphans management will take care of
delivering the message as long as there are socket buffers left.
This commit is contained in:
Willy Tarreau 2011-07-22 17:36:27 +02:00
parent 9bd0d744ef
commit 2b15492a75
1 changed files with 6 additions and 0 deletions
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6
src/session.c
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@ -310,6 +310,12 @@ int session_accept(struct listener *l, int cfd, struct sockaddr_storage *addr)
out_free_session:
pool_free2(pool2_session, s);
out_close:
if (ret < 0 && s->fe->mode == PR_MODE_HTTP) {
/* critical error, no more memory, try to emit a 500 response */
struct chunk *err_msg = error_message(s, HTTP_ERR_500);
send(cfd, err_msg->str, err_msg->len, MSG_DONTWAIT|MSG_NOSIGNAL);
}
if (fdtab[cfd].state != FD_STCLOSE)
fd_delete(cfd);
else