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stream: improve 3whs completed by ACK with data #11824

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stream: improve 3whs completed by ACK with data #11824

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8 changes: 8 additions & 0 deletions src/stream-tcp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2520,6 +2520,14 @@ static int StreamTcpPacketStateSynRecv(
StreamTcpPacketSetState(p, ssn, TCP_ESTABLISHED);
SCLogDebug("ssn %p: =~ ssn state is now TCP_ESTABLISHED", ssn);

/* special case: normally the packet following the 3whs is
* considered flow established, but with data we need it to
* be established now. This can happen if the original ACK was
* lost. */
if (p->payload_len) {
p->flowflags |= FLOW_PKT_ESTABLISHED;
}

StreamTcpReassembleHandleSegment(tv, stt->ra_ctx, ssn, &ssn->client, p);

/* If asynchronous stream handling is allowed then set the session,
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