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Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state) by checking tcp_tw_pcbs also

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This commit is contained in:
goldsimon 2007-09-20 18:27:50 +00:00
parent 4ffafdeb86
commit 0aa3d89134
2 changed files with 16 additions and 0 deletions
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4
CHANGELOG
View File

@ -405,6 +405,10 @@ HISTORY
++ Bug fixes:
2007-09-20 Simon Goldschmidt
* tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
by checking tcp_tw_pcbs also
2007-09-19 Simon Goldschmidt
* icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)

12
src/core/tcp.c
View File

@ -279,6 +279,7 @@ tcp_bind(struct tcp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
port = tcp_new_port();
}
/* Check if the address already is in use. */
/* Check the listen pcbs. */
for(cpcb = (struct tcp_pcb *)tcp_listen_pcbs.pcbs;
cpcb != NULL; cpcb = cpcb->next) {
if (cpcb->local_port == port) {
@ -289,6 +290,7 @@ tcp_bind(struct tcp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
}
}
}
/* Check the connected pcbs. */
for(cpcb = tcp_active_pcbs;
cpcb != NULL; cpcb = cpcb->next) {
if (cpcb->local_port == port) {
@ -299,6 +301,7 @@ tcp_bind(struct tcp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
}
}
}
/* Check the bound, not yet connected pcbs. */
for(cpcb = tcp_bound_pcbs; cpcb != NULL; cpcb = cpcb->next) {
if (cpcb->local_port == port) {
if (ip_addr_isany(&(cpcb->local_ip)) ||
@ -308,6 +311,15 @@ tcp_bind(struct tcp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
}
}
}
/* @todo: until SO_REUSEADDR is implemented (see task #6995 on savannah),
* we have to check the pcbs in TIME-WAIT state, also: */
for(cpcb = tcp_tw_pcbs; cpcb != NULL; cpcb = cpcb->next) {
if (cpcb->local_port == port) {
if (ip_addr_cmp(&(cpcb->local_ip), ipaddr)) {
return ERR_USE;
}
}
}
if (!ip_addr_isany(ipaddr)) {
pcb->local_ip = *ipaddr;