diff options
Diffstat (limited to 'lwip/src/core/tcp_in.c')
| -rw-r--r-- | lwip/src/core/tcp_in.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lwip/src/core/tcp_in.c b/lwip/src/core/tcp_in.c index 428a6f4..2202e38 100644 --- a/lwip/src/core/tcp_in.c +++ b/lwip/src/core/tcp_in.c @@ -852,8 +852,9 @@ tcp_process(struct tcp_pcb *pcb) /* Do different things depending on the TCP state. */ switch (pcb->state) { case SYN_SENT: - LWIP_DEBUGF(TCP_INPUT_DEBUG, ("SYN-SENT: ackno %"U32_F" pcb->snd_nxt %"U32_F" unacked %"U32_F"\n", ackno, - pcb->snd_nxt, lwip_ntohl(pcb->unacked->tcphdr->seqno))); + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("SYN-SENT: ackno %"U32_F" pcb->snd_nxt %"U32_F" unacked %s %"U32_F"\n", + ackno, pcb->snd_nxt, pcb->unacked ? "" : " empty:", + pcb->unacked ? lwip_ntohl(pcb->unacked->tcphdr->seqno) : 0)); /* received SYN ACK with expected sequence number? */ if ((flags & TCP_ACK) && (flags & TCP_SYN) && (ackno == pcb->lastack + 1)) { |