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improve socket error reporting

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always use getsockopt() to query the meaning of POLLERR, rather than
reporting "Unidentified socket error".
this is unlikely to have any effect when using select(), as that one
pretty much never signals exceptional conditions.
This commit is contained in:
Oswald Buddenhagen 2013-03-29 18:22:40 +01:00
parent 2ef6dc8a90
commit 7ba7be111e
1 changed files with 18 additions and 27 deletions
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45
src/socket.c
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@ -297,7 +297,7 @@ static void start_tls_p3( conn_t *conn, int ok )
static void socket_fd_cb( int, void * );
static void socket_connect_failed( conn_t * );
static void socket_connected2( conn_t * );
static void socket_connected( conn_t * );
static void socket_connect_bail( conn_t * );
static void
@ -388,7 +388,7 @@ socket_connect( conn_t *sock, void (*cb)( int ok, void *aux ) )
}
info( "\vok\n" );
socket_connected2( sock );
socket_connected( sock );
return;
}
@ -402,24 +402,6 @@ socket_connect_failed( conn_t *conn )
static void
socket_connected( conn_t *conn )
{
int soerr;
socklen_t selen = sizeof(soerr);
if (getsockopt( conn->fd, SOL_SOCKET, SO_ERROR, &soerr, &selen )) {
perror( "getsockopt" );
exit( 1 );
}
if (soerr) {
errno = soerr;
socket_connect_failed( conn );
return;
}
socket_connected2( conn );
}
static void
socket_connected2( conn_t *conn )
{
conf_fd( conn->fd, 0, POLLIN );
conn->state = SCK_READY;
@ -637,13 +619,22 @@ socket_fd_cb( int events, void *aux )
{
conn_t *conn = (conn_t *)aux;
if (conn->state == SCK_CONNECTING) {
socket_connected( conn );
return;
}
if (events & POLLERR) {
error( "Unidentified socket error from %s.\n", conn->name );
if ((events & POLLERR) || conn->state == SCK_CONNECTING) {
int soerr;
socklen_t selen = sizeof(soerr);
if (getsockopt( conn->fd, SOL_SOCKET, SO_ERROR, &soerr, &selen )) {
perror( "getsockopt" );
exit( 1 );
}
errno = soerr;
if (conn->state == SCK_CONNECTING) {
if (errno)
socket_connect_failed( conn );
else
socket_connected( conn );
return;
}
sys_error( "Socket error from %s", conn->name );
socket_fail( conn );
return;
}