<html><head></head><body style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Hello all,<br><br>I'm having problems with ACKs not beeing matched to an ongoing call, thus OpenSER resends a 487 many times.<br><br>My question is, would OpenSER deny an ACK depending on how the headers are sorted in the packet? Eg. if the VIA-header is found at the end of the packet? How does it actually match the 487 and the ACK?<br><br>Packet from proxy that OpenSER doesn't seem to match:<br>User-Agent: hotsip-transactron<br>Max-Forwards: 70<br>Content-Length: 0<br>To: <sip:123456@domain2.se>;tag=1499854882<br>From: "PBX" <sip:654321@domain1.se>;tag=as2fa86da4<br>Call-ID: 22079ed445536bea109aefc410164bb5@domain1.se<br>CSeq: 103 ACK<br>Via: SIP/2.0/UDP 192.168.0.1:5060;branch=z9hG4bK-81056ef2a1e003b87474dfaa6a5e7959;rport=5060<br><br>Br,<br>/Tobias<br></body></html>