diff options
| author | Steven Luo <steven+qemu@steven676.net> | 2016-04-06 22:04:55 -0700 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-04-07 13:02:05 +0200 |
| commit | 6625d83a6eb3b51a622d72adce713cab75cbf2e7 (patch) | |
| tree | cf4b63d2e2500003ead1ddd06ef318ce79661160 /slirp | |
| parent | 27d92ebc5ed1bb0b518d0ebc4c609182ad20a799 (diff) | |
| download | qemu-6625d83a6eb3b51a622d72adce713cab75cbf2e7.tar.gz | |
slirp: handle deferred ECONNREFUSED on non-blocking TCP sockets
slirp currently only handles ECONNREFUSED in the case where connect()
returns immediately with that error; since we use non-blocking sockets,
most of the time we won't receive the error until we later try to read
from the socket. Ensure that we deliver the appropriate RST to the
guest in this case.
Signed-off-by: Steven Luo <steven+qemu@steven676.net>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Diffstat (limited to 'slirp')
| -rw-r--r-- | slirp/socket.c | 2 | ||||
| -rw-r--r-- | slirp/tcp_input.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/slirp/socket.c b/slirp/socket.c index 0d67b12678..bd97b2d682 100644 --- a/slirp/socket.c +++ b/slirp/socket.c @@ -188,7 +188,7 @@ soread(struct socket *so) DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno))); sofcantrcvmore(so); - if (err == ECONNRESET + if (err == ECONNRESET || err == ECONNREFUSED || err == ENOTCONN || err == EPIPE) { tcp_drop(sototcpcb(so), err); } else { diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c index 1fcca3040e..5433e7fe9c 100644 --- a/slirp/tcp_input.c +++ b/slirp/tcp_input.c @@ -725,6 +725,12 @@ findso: so->so_ti = ti; tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; tp->t_state = TCPS_SYN_RECEIVED; + /* + * Initialize receive sequence numbers now so that we can send a + * valid RST if the remote end rejects our connection. + */ + tp->irs = ti->ti_seq; + tcp_rcvseqinit(tp); tcp_template(tp); } return; |