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tcp: Make tcp_listen_with_backlog_and_err return NULL if the address/port is already used
The caller of tcp_listen_with_backlog_and_err() usually check if the return
pcb is NULL before checking the err reason. I think the commit adding
tcp_listen_with_backlog_and_err() accidently change the behavior, Fix it.
Fixes: 98fc82fa71
("added function tcp_listen_with_backlog_and_err() to get the error reason when listening fails")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
This commit is contained in:
parent
edfeab7932
commit
1f3c18fcbe
@ -684,6 +684,7 @@ tcp_listen_with_backlog_and_err(struct tcp_pcb *pcb, u8_t backlog, err_t *err)
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if ((lpcb->local_port == pcb->local_port) &&
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if ((lpcb->local_port == pcb->local_port) &&
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ip_addr_cmp(&lpcb->local_ip, &pcb->local_ip)) {
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ip_addr_cmp(&lpcb->local_ip, &pcb->local_ip)) {
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/* this address/port is already used */
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/* this address/port is already used */
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lpcb = NULL;
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res = ERR_USE;
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res = ERR_USE;
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goto done;
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goto done;
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}
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}
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