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Fix bug #20480: Check the pcb passed to tcp_listen() for the correct state (must be CLOSED).

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This commit is contained in:
goldsimon
2007-07-24 07:41:55 +00:00
parent ebcb46cd48
commit 62c3de30b9
3 changed files with 22 additions and 12 deletions
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28
src/api/api_msg.c
View File

@@ -669,20 +669,24 @@ do_listen(struct api_msg_msg *msg)
if (msg->conn->err == ERR_OK) {
if (msg->conn->pcb.tcp != NULL) {
if (msg->conn->type == NETCONN_TCP) {
struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
if (lpcb == NULL) {
msg->conn->err = ERR_MEM;
} else {
if (msg->conn->acceptmbox == SYS_MBOX_NULL) {
if ((msg->conn->acceptmbox = sys_mbox_new()) == SYS_MBOX_NULL) {
msg->conn->err = ERR_MEM;
if (msg->conn->pcb.tcp->state == CLOSED) {
struct tcp_pcb* lpcb = tcp_listen(msg->conn->pcb.tcp);
if (lpcb == NULL) {
msg->conn->err = ERR_MEM;
} else {
if (msg->conn->acceptmbox == SYS_MBOX_NULL) {
if ((msg->conn->acceptmbox = sys_mbox_new()) == SYS_MBOX_NULL) {
msg->conn->err = ERR_MEM;
}
}
if (msg->conn->err == ERR_OK) {
msg->conn->pcb.tcp = lpcb;
tcp_arg(msg->conn->pcb.tcp, msg->conn);
tcp_accept(msg->conn->pcb.tcp, accept_function);
}
}
if (msg->conn->err == ERR_OK) {
msg->conn->pcb.tcp = lpcb;
tcp_arg(msg->conn->pcb.tcp, msg->conn);
tcp_accept(msg->conn->pcb.tcp, accept_function);
}
} else {
msg->conn->err = ERR_CONN;
}
}
}

2
src/core/tcp.c
View File

@@ -343,6 +343,8 @@ tcp_listen(struct tcp_pcb *pcb)
{
struct tcp_pcb_listen *lpcb;
LWIP_ERROR("pcb not already connected", pcb->state == CLOSED, return NULL);
/* already listening? */
if (pcb->state == LISTEN) {
return pcb;