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udp: fix udp_bind for IPADDR_TYPE_ANY

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See bug #55171

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
(cherry picked from commit 752cdb1a53)
This commit is contained in:
Simon Goldschmidt
2019-02-26 14:48:44 +01:00
parent aad77fcacb
commit fee64d7515
2 changed files with 21 additions and 3 deletions
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6
src/core/udp.c
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@@ -997,11 +997,13 @@ udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
{
/* port matches that of PCB in list and REUSEADDR not set -> reject */
if ((ipcb->local_port == port) &&
(IP_GET_TYPE(&ipcb->local_ip) == IP_GET_TYPE(ipaddr)) &&
((IP_GET_TYPE(&ipcb->local_ip) == IP_GET_TYPE(ipaddr)) &&
/* IP address matches or any IP used? */
(ip_addr_cmp(&ipcb->local_ip, ipaddr) ||
ip_addr_isany(ipaddr) ||
ip_addr_isany(&ipcb->local_ip))) {
ip_addr_isany(&ipcb->local_ip))) ||
(IP_GET_TYPE(&ipcb->local_ip) == IPADDR_TYPE_ANY) ||
(IP_GET_TYPE(ipaddr) == IPADDR_TYPE_ANY)) {
/* other PCB already binds to this local IP and port */
LWIP_DEBUGF(UDP_DEBUG,
("udp_bind: local port %"U16_F" already bound by another pcb\n", port));