From 9a3a64665819a0e1ee82953bf879f57d6f433358 Mon Sep 17 00:00:00 2001 From: Nathaniel McCallum Date: Fri, 30 Sep 2016 10:03:33 -0400 Subject: [PATCH] Properly handle EOF condition on libkrad sockets In the previous code, when the remote peer performed an orderly shutdown on the socket, libkrad would enter a state in which all future requests timed out. Instead, if the peer shuts down its socket, we need to attempt to reopen it. ticket: 8504 (new) target_version: 1.14-next tags: pullup (cherry picked from commit 248497427d5a45225817b6c22e9224e8ad969872) --- src/lib/krad/remote.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/src/lib/krad/remote.c b/src/lib/krad/remote.c index df3de3a..68cd16f 100644 --- a/src/lib/krad/remote.c +++ b/src/lib/krad/remote.c @@ -329,16 +329,15 @@ on_io_read(krad_remote *rr) /* Read the packet. */ i = recv(verto_get_fd(rr->io), rr->buffer.data + rr->buffer.length, pktlen, 0); - if (i < 0) { - /* Should we try again? */ - if (errno == EWOULDBLOCK || errno == EAGAIN || errno == EINTR) - return; - /* The socket is unrecoverable. */ + /* On these errors, try again. */ + if (i < 0 && (errno == EWOULDBLOCK || errno == EAGAIN || errno == EINTR)) + return; + + /* On any other errors or on EOF, the socket is unrecoverable. */ + if (i <= 0) { remote_shutdown(rr); return; - } else if (i == 0) { - remote_del_flags(rr, FLAGS_READ); } /* If we have a partial read or just the header, try again. */ -- 2.9.3