[OpenSER-Devel] tcp transport has stopped working

[Juha Heinanen]

Juha Heinanen writes:

 > some users complained that they are not anymore able to register to
 > openser (svn trunk version) using tcp transport.  i then tested myself
 > and indeed tcp session is setup fine from sip ua to openser, then
 > openser receives register request from sip ua and sends back tcp ack,
 > but 401 (that should follow) never shows up on the wire.

i turned on debug and got the following:

Sep  8 21:16:04 localhost /usr/sbin/openser[24456]: tcpconn_new: new tcp connection to: 192.98.101.10
Sep  8 21:16:04 localhost /usr/sbin/openser[24456]: tcpconn_new: on port 57487, type 2
Sep  8 21:16:04 localhost /usr/sbin/openser[24456]: tcpconn_add: hashes: 591, 2
Sep  8 21:16:04 localhost /usr/sbin/openser[24456]: handle_new_connect: new connection: 0xb57db470 23 flags: 0002
Sep  8 21:16:04 localhost /usr/sbin/openser[24456]: send2child: to tcp child 1 0(24452), 0xb57db470
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: received n=4 con=0xb57db470, fd=19
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: DBG: io_watch_add(0x812b200, 19, 2, 0xb57db470), fd_no=1
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: tcp_read_req: content-length= 0
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: SIP Request:
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]:  method:  <REGISTER>
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]:  uri:     <sip:test.fi>
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]:  version: <SIP/2.0>
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: parse_headers: flags=2
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: Found param type 232, <branch> = <z9hG4bK13FA14FE>; state=6
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: Found param type 237, <alias> = <n/a>; state=16
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: end of header reached, state=5
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: parse_headers: Via found, flags=2
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: parse_headers: this is the first via
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: After parse_msg...
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: ERROR: tcpconn_add_alias: possible port hijack attempt
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]: ERROR: tcpconn_add_alias: alias already present and points to another connection (1 : 5062 and 2 : 5062)
Sep  8 21:16:04 localhost /usr/sbin/openser[24452]:  ERROR: receive_msg: tcp alias failed

i have in openser.cfg:

listen=192.98.101.10
alias=sip.test.fi:5060
tcp_accept_aliases=yes
auto_aliases=no

sip ua is listening on port 5062 and uses that port in its via header:

Via: SIP/2.0/TCP x.x.x.x:5062;branch=z9hG4bK2B2B03D8;alias

-- juha