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udp.c: Allow udp_connect() on a dual-stack UDP PCB (type IPADDR_TYPE_ANY). This may be useful in some applications - no need to keep separate storage for target IP.

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This commit is contained in:
Dirk Ziegelmeier 2016-03-22 15:12:16 +01:00
parent a9c7ead6b7
commit f97bf85fd6
1 changed files with 10 additions and 4 deletions
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14
src/core/udp.c
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@ -164,8 +164,6 @@ udp_input_local_match(struct udp_pcb *pcb, struct netif *inp, u8_t broadcast)
/* Only need to check PCB if incoming IP version matches PCB IP version */
if(IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ip_current_dest_addr())) {
LWIP_ASSERT("UDP PCB: inconsistent local/remote IP versions", IP_IS_V6_VAL(pcb->local_ip) == IP_IS_V6_VAL(pcb->remote_ip));
#if LWIP_IPV4
/* Special case: IPv4 broadcast: all or broadcasts in my subnet
* Note: broadcast variable can only be 1 if it is an IPv4 broadcast */
@ -993,7 +991,7 @@ udp_connect(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
{
struct udp_pcb *ipcb;
if ((pcb == NULL) || (ipaddr == NULL) || !IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ipaddr)) {
if ((pcb == NULL) || (ipaddr == NULL) || !IP_ADDR_PCB_VERSION_MATCH(pcb, ipaddr)) {
return ERR_VAL;
}
@ -1035,7 +1033,15 @@ void
udp_disconnect(struct udp_pcb *pcb)
{
/* reset remote address association */
ip_addr_set_any(IP_IS_V6_VAL(pcb->remote_ip), &pcb->remote_ip);
#if LWIP_IPV4 && LWIP_IPV6
if(IP_IS_ANY_TYPE_VAL(pcb->local_ip)) {
ip_addr_copy(pcb->remote_ip, *IP_ANY_TYPE);
} else {
#endif
ip_addr_set_any(IP_IS_V6_VAL(pcb->remote_ip), &pcb->remote_ip);
#if LWIP_IPV4 && LWIP_IPV6
}
#endif
pcb->remote_port = 0;
/* mark PCB as unconnected */
pcb->flags &= ~UDP_FLAGS_CONNECTED;