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If a udp_pcb has a local_ip set, check if it is the same as the one of the netif used for sending to prevent sending from old addresses after a netif address gets changed (partly fixes bug #3168).
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@ -158,6 +158,11 @@ HISTORY
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++ Bug fixes:
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2007-05-16 Simon Goldschmidt
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* api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
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as the one of the netif used for sending to prevent sending from old
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addresses after a netif address gets changed (partly fixes bug #3168).
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2007-05-16 Frédéric Bernon
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* tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
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with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
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@ -582,9 +582,9 @@ do_send(struct api_msg_msg *msg)
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#if LWIP_RAW
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case NETCONN_RAW:
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if (msg->msg.b->addr==NULL) {
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raw_send(msg->conn->pcb.raw, msg->msg.b->p);
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msg->conn->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
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} else {
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raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, msg->msg.b->addr);
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msg->conn->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, msg->msg.b->addr);
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}
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break;
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#endif
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@ -595,9 +595,9 @@ do_send(struct api_msg_msg *msg)
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/* FALLTHROUGH */
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case NETCONN_UDP:
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if (msg->msg.b->addr==NULL) {
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udp_send(msg->conn->pcb.udp, msg->msg.b->p);
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msg->conn->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
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} else {
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udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, msg->msg.b->addr, msg->msg.b->port);
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msg->conn->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, msg->msg.b->addr, msg->msg.b->port);
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}
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break;
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#endif /* LWIP_UDP */
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@ -355,6 +355,16 @@ udp_send(struct udp_pcb *pcb, struct pbuf *p)
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/* use outgoing network interface IP address as source address */
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src_ip = &(netif->ip_addr);
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} else {
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/* check if UDP PCB local IP address is correct */
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if (!ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) {
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if (q != p) {
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/* free the header pbuf */
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pbuf_free(q);
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q = NULL;
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/* p is still referenced by the caller, and will live on */
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}
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return ERR_VAL;
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}
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/* use UDP PCB local IP address as source address */
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src_ip = &(pcb->local_ip);
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}
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