MINOR: raw-sock: don't try to send if an error was already reported
There's no point trying to send() on a socket on which an error was already
reported. This wastes syscalls. Till now it was possible to occasionally
see an attempt to sendto() after epoll_wait() had reported EPOLLERR.
diff --git a/src/raw_sock.c b/src/raw_sock.c
index b161f90..e172b1d 100644
--- a/src/raw_sock.c
+++ b/src/raw_sock.c
@@ -360,6 +360,13 @@
if (!fd_send_ready(conn->handle.fd))
return 0;
+ if (unlikely(fdtab[conn->handle.fd].state & FD_POLL_ERR)) {
+ /* an error was reported on the FD, we can't send anymore */
+ conn->flags |= CO_FL_ERROR | CO_FL_SOCK_WR_SH | CO_FL_SOCK_RD_SH;
+ errno = EPIPE;
+ return 0;
+ }
+
if (conn->flags & CO_FL_SOCK_WR_SH) {
/* it's already closed */
conn->flags |= CO_FL_ERROR | CO_FL_SOCK_RD_SH;