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added function tcp_listen_with_backlog_and_err() to get the error reason when listening fails (bug #49861)

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This commit is contained in:
sg
2016-12-31 15:36:31 +01:00
parent 1884c7e83f
commit 98fc82fa71
4 changed files with 53 additions and 13 deletions
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15
src/api/api_msg.c
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@@ -1307,6 +1307,13 @@ lwip_netconn_do_listen(void *m)
/* connection is not closed, cannot listen */
msg->err = ERR_VAL;
} else {
err_t err;
u8_t backlog;
#if TCP_LISTEN_BACKLOG
backlog = msg->msg.lb.backlog;
#else /* TCP_LISTEN_BACKLOG */
backlog = TCP_DEFAULT_LISTEN_BACKLOG;
#endif /* TCP_LISTEN_BACKLOG */
#if LWIP_IPV4 && LWIP_IPV6
/* "Socket API like" dual-stack support: If IP to listen to is IP6_ADDR_ANY,
* and NETCONN_FLAG_IPV6_V6ONLY is NOT set, use IP_ANY_TYPE to listen
@@ -1319,15 +1326,11 @@ lwip_netconn_do_listen(void *m)
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
#if TCP_LISTEN_BACKLOG
lpcb = tcp_listen_with_backlog(msg->conn->pcb.tcp, msg->msg.lb.backlog);
#else /* TCP_LISTEN_BACKLOG */
lpcb = tcp_listen(msg->conn->pcb.tcp);
#endif /* TCP_LISTEN_BACKLOG */
lpcb = tcp_listen_with_backlog_and_err(msg->conn->pcb.tcp, backlog, &err);
if (lpcb == NULL) {
/* in this case, the old pcb is still allocated */
msg->err = ERR_MEM;
msg->err = err;
} else {
/* delete the recvmbox and allocate the acceptmbox */
if (sys_mbox_valid(&msg->conn->recvmbox)) {