stream: accept ack with next_seq + 1 on last_ack state

13 years ago · 6326390120
parent 3f6ecff260
commit 6326390120
1 changed files with 1 additions and 1 deletions
--- a/src/stream-tcp.c
+++ b/src/stream-tcp.c
@ -3408,7 +3408,7 @@ static int StreamTcpPakcetStateLastAck(ThreadVars *tv, Packet *p,
                    "%" PRIu32 ", ACK %" PRIu32 "", ssn, p->payload_len,
                    TCP_GET_SEQ(p), TCP_GET_ACK(p));
-            if (TCP_GET_SEQ(p) != ssn->client.next_seq) {
+            if (TCP_GET_SEQ(p) != ssn->client.next_seq && TCP_GET_SEQ(p) != ssn->client.next_seq + 1) {
                SCLogDebug("ssn %p: -> SEQ mismatch, packet SEQ %" PRIu32 ""
                        " != %" PRIu32 " from stream", ssn,
                        TCP_GET_SEQ(p), ssn->client.next_seq);