From 1a6455bc2544f873100348560cc7759096f5425e Mon Sep 17 00:00:00 2001 From: Simon Goldschmidt Date: Wed, 30 Jan 2019 14:27:16 +0100 Subject: [PATCH] tcp: improve debug message a little (cherry picked from commit ed561a578b3283593c38a206d4a9b735e9d84758) --- src/core/tcp_in.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/core/tcp_in.c b/src/core/tcp_in.c index ed4ba32a..2202e381 100644 --- a/src/core/tcp_in.c +++ b/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, (pcb->unacked != NULL)? lwip_ntohl(pcb->unacked->tcphdr->seqno) : 0)); + 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)) {