[sr-dev] SR master: [tcp_main.c:700]: _wbufq_add(): ERROR: wbufq_add(371 bytes): write queue full or timeout

[Daniel-Constantin Mierla]

Hello,

On 12/16/10 12:36 PM, Iñaki Baz Castillo wrote:
> Hi, some comment about it please? :)

try to increase the value of parameter:
http://www.kamailio.org/dokuwiki/doku.php/core-cookbook:3.1.x#tcp_conn_wq_max

Since there is a connection under heavy traffic, you have to adjust the 
setting for tcp a bit.

Cheers,
Daniel

>
> 2010/12/10 Iñaki Baz Castillo<ibc at aliax.net>:
>> Hi, I'm testing TCP support in Kamailio master branch.
>>
>> The test is a bit special because I open a TCP connection (client and
>> proxy in localhost) and send a TCP data containing 5000 SIP requests
>> together (which is valid). Then wait for responses and parses them.
>> Kamailio just replies stateless for all those requests (no routing, no
>> forwarding, no more processing). There are two TCP workers.
>>
>> Sometimes it works ok and all the replies are received, but sometimes
>> Kamailio gives an error after receiving N requests (i.e. 1072
>> requests):
>>
>>
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1071#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:700]: _wbufq_add(): ERROR:
>> wbufq_add(372 bytes): write queue full or timeout  (32455, total
>> 32455, last write 0 s ago)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1072#015#012
>> kamailio[18350]: ERROR:<core>  [tcp_main.c:3594]: handle_ser_child():
>> handle_ser_child: ERROR: received CON_ERROR for 0x7fc0dd172880 (id
>> 65), refcnt 3, flags 0x601c
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1073#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1074#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1075#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1076#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>> kamailio[18349]: INFO:<script>: Branch = z9hG4bK1---num-request-1077#015#012
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2743]: tcpconn_1st_send():
>> connect 127.0.0.1:51901 failed (RST) Connection refused
>> kamailio[18349]: ERROR:<core>  [tcp_main.c:2753]: tcpconn_1st_send():
>> 127.0.0.1:51901: connect&  send  for 0x7fc0dd17c648 failed: Connection
>> refused (111)
>> kamailio[18349]: ERROR: sl [../../forward.h:169]: msg_send():
>> msg_send: ERROR: tcp_send failed
>>
>>
>> And finally Kamailio closes the TCP connection:
>>
>> kamailio[18349]: WARNING:<core>  [tcp_read.c:1195]: handle_io():
>> WARNING: tcp_receive: handle_io: F_TCPCONN connection marked as bad:
>> 0x7fc0dd172880 id 65 refcnt 1
>>
>>
>>
>> I've no special parameters for TCP in the kamailio.cfg, just the
>> default config file.
>> Is it a bug? can it be improved by setting some parameter? However
>> it's strange the fact that the error just occurs sometimes (but very
>> often).
>>
>>
>> Thanks.
>>
>>
>> --
>> Iñaki Baz Castillo
>> <ibc at aliax.net>
>>
>
>

-- 
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com