8 Feb
2020
8 Feb
'20
7:30 p.m.
### Description
Kamailio cannot create new `TCP` connection when.
1. used `msrp` module;
1. stated with option `-x tlsf`;
Kamailio send `SYN` packet, receive `SYN/ACK` and then Kamailio send `RST` packet.
And you will get in log
```
4(36) DEBUG: <core> [core/ip_addr.c:223]: print_ip(): tcpconn_new: new tcp
connection: YYY.YYY.120.101
4(36) DEBUG: <core> [core/tcp_main.c:1174]: tcpconn_new(): on port 2855, type 2
4(36) DEBUG: <core> [core/tcp_main.c:1493]: tcpconn_add(): hashes: 3592:0:0, 3
4(36) DEBUG: <core> [core/tcp_main.c:2885]: tcpconn_1st_send(): pending write on
new connection 0x7fab86821eb8 (-1/669 bytes written) (err: 11 - Resource temporarily
unavailable)
4(36) ERROR: <core> [core/tcp_main.c:616]: _wbufq_add(): (669 bytes): write queue
full or timeout (0, total -2038706176, last write 131535619 s ago)
4(36) ERROR: <core> [core/tcp_main.c:2904]: tcpconn_1st_send():
YYY.YYY.120.101:2855: EAGAIN and write queue full or failed for 0x7fab86821eb8
4(36) DEBUG: <core> [core/tcp_main.c:3171]: tcpconn_chld_put(): destroying
connection 0x7fab86821eb8 (3, -1) flags 0060
4(36) ERROR: msrp [msrp_netio.c:180]: msrp_relay(): forwarding frame failed
```
### Troubleshooting
#### Reproduction
To reproduce issue need start kamailio with this config.
```
#!KAMAILIO
debug=2
memdbg=5
memlog=5
children=4
log_stderror=yes
auto_aliases=no
tcp_accept_no_cl=yes
tcp_connection_lifetime=1810
listen=tcp:eth0:2855
loadmodule "sl.so"
loadmodule "msrp.so"
loadmodule "pv.so"
loadmodule "htable.so"
loadmodule "xlog.so"
modparam("htable", "htable", "msrp=>size=8;")
request_route {
sl_send_reply("403", "No SIP Here");
exit;
}
reply_route {
drop;
}
event_route[msrp:frame-in] {
xdbg("============#[[$msrp(method)]]===========\n");
xdbg("============*[[$si:$sp]]\n");
xdbg("============ crthop: [$msrp(crthop)]\n");
xdbg("============ prevhop: [$msrp(prevhop)]\n");
xdbg("============ nexthop: [$msrp(nexthop)]\n");
xdbg("============ firsthop: [$msrp(firsthop)]\n");
xdbg("============ lasthop: [$msrp(lasthop)]\n");
xdbg("============ prevhops: [$msrp(prevhops)]\n");
xdbg("============ nexthops: [$msrp(nexthops)]\n");
xdbg("============ srcaddr: [$msrp(srcaddr)]\n");
xdbg("============ srcsock: [$msrp(srcsock)]\n");
xdbg("============ sessid: [$msrp(sessid)]\n");
msrp_reply_flags("1");
if (msrp_is_reply()) {
msrp_relay();
} else if ($msrp(method)=="SEND" || $msrp(method)=="REPORT") {
if ($msrp(nexthops)>1) {
if ($msrp(method)!="REPORT") {
msrp_reply("200", "OK");
}
msrp_relay();
exit;
}
if($msrp(method)!="REPORT") {
msrp_reply("200", "OK");
}
msrp_relay();
} else {
msrp_reply("501", "Request-method-not-understood");
}
}
```
And send MSRP message via Kamailio.
You will get this output
```
8(40) DEBUG: <core> [core/ip_addr.c:223]: print_ip(): tcpconn_new: new tcp
connection: 91.224.133.8
8(40) DEBUG: <core> [core/tcp_main.c:1174]: tcpconn_new(): on port 51380, type 2
8(40) DEBUG: <core> [core/tcp_main.c:1493]: tcpconn_add(): hashes: 1780:844:2173,
1
8(40) DEBUG: <core> [core/io_wait.h:376]: io_watch_add(): DBG:
io_watch_add(0x5647a5dbd800, 16, 2, 0x7fab8681db58), fd_no=12
8(40) DEBUG: <core> [core/io_wait.h:598]: io_watch_del(): DBG: io_watch_del
(0x5647a5dbd800, 16, -1, 0x0) fd_no=13 called
8(40) DEBUG: <core> [core/tcp_main.c:4454]: handle_tcpconn_ev(): sending to child,
events 1
8(40) DEBUG: <core> [core/tcp_main.c:4124]: send2child(): selected tcp worker idx:0
proc:4 pid:36 for activity on [tcp:XXX.XXX.120.100:2855], 0x7fab8681db58
4(36) DEBUG: <core> [core/tcp_read.c:1759]: handle_io(): received n=8
con=0x7fab8681db58, fd=4
4(36) DEBUG: <core> [core/tcp_read.c:1087]: msrp_process_msg(): MSRP Message:
[[>>>
MSRP 5279ea9b658f5933 SEND
To-Path: msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp
From-Path: msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp
Message-ID: 33f0c5fe84311abf
Byte-Range: 1-0/0
-------5279ea9b658f5933$
<<<]]
4(36) DEBUG: msrp [msrp_parser.c:165]: msrp_parse_fline(): MSRP FLine: [1] [MSRP]
[5279ea9b658f5933] [SEND] [1] []
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a9490f0) [To-Path] [2] [msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a949170) [From-Path] [1] [msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a9491f0) [Message-ID] [4] [33f0c5fe84311abf]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a95d258) [Byte-Range] [5] [1-0/0]
4(36) DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:
4(36) DEBUG: <core> [core/parser/msg_parser.c:611]: parse_msg(): method:
<MSRP>
4(36) DEBUG: <core> [core/parser/msg_parser.c:613]: parse_msg(): uri:
<sip:a@127.0.0.1>
4(36) DEBUG: <core> [core/parser/msg_parser.c:615]: parse_msg(): version:
<SIP/2.0>
4(36) DEBUG: <core> [core/parser/parse_via.c:1300]: parse_via_param(): Found param
type 232, <branch> = <z9hG4bKa>; state=16
4(36) DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header
reached, state=5
4(36) DEBUG: <core> [core/parser/msg_parser.c:498]: parse_headers(): Via found,
flags=2
4(36) DEBUG: <core> [core/parser/msg_parser.c:500]: parse_headers(): this is the
first via
4(36) DEBUG: msrp [msrp_mod.c:538]: msrp_frame_received(): executing
event_route[msrp:frame-in] (1)
4(36) DEBUG: <script>: xlog_helper(): ============#[[SEND]]===========
4(36) DEBUG: <script>: xlog_helper(): ============*[[91.224.133.8:51380]]
4(36) DEBUG: <script>: xlog_helper(): ============ crthop:
[msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ prevhop:
[msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ nexthop:
[msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ firsthop:
[msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ lasthop:
[msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ prevhops: [1]
4(36) DEBUG: <script>: xlog_helper(): ============ nexthops: [1]
4(36) DEBUG: <script>: xlog_helper(): ============ srcaddr:
[msrp://91.224.133.8:51380]
4(36) DEBUG: <script>: xlog_helper(): ============ srcsock:
[tcp:XXX.XXX.120.100:2855]
4(36) DEBUG: msrp [msrp_parser.c:565]: msrp_parse_uri(): MSRP URI: [msrp] []
[XXX.XXX.120.100] [2855] [s.8167.4.1897294566] [tcp] []
4(36) DEBUG: <script>: xlog_helper(): ============ sessid: [s.8167.4.1897294566]
4(36) DEBUG: <core> [core/tcp_main.c:1589]: _tcpconn_find(): found connection by
id: 1
4(36) DEBUG: <core> [core/tcp_main.c:2470]: tcpconn_send_put(): send from reader
(36 (4)), reusing fd
4(36) DEBUG: <core> [core/tcp_main.c:2705]: tcpconn_do_send(): sending...
4(36) DEBUG: <core> [core/tcp_main.c:2738]: tcpconn_do_send(): after real write: c=
0x7fab8681db58 n=232 fd=4
4(36) DEBUG: <core> [core/tcp_main.c:2739]: tcpconn_do_send(): buf=
MSRP 5279ea9b658f5933 200 OK
To-Path: msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp
From-Path: msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
Message-ID: 33f0c5fe84311abf
-------5279ea9b658f5933$
4(36) DEBUG: msrp [msrp_parser.c:565]: msrp_parse_uri(): MSRP URI: [msrp] []
[YYY.YYY.120.101] [2855] [628b709ee0444396b567545d28cc5bc5] [tcp] []
4(36) DEBUG: <core> [core/tcp_main.c:1992]: tcp_send(): no open tcp connection
found, opening new one
4(36) DEBUG: <core> [core/ip_addr.c:223]: print_ip(): tcpconn_new: new tcp
connection: YYY.YYY.120.101
4(36) DEBUG: <core> [core/tcp_main.c:1174]: tcpconn_new(): on port 2855, type 2
4(36) DEBUG: <core> [core/tcp_main.c:1493]: tcpconn_add(): hashes: 3592:0:0, 2
4(36) DEBUG: <core> [core/tcp_main.c:2885]: tcpconn_1st_send(): pending write on
new connection 0x7fab86821eb8 (-1/313 bytes written) (err: 11 - Resource temporarily
unavailable)
4(36) ERROR: <core> [core/tcp_main.c:616]: _wbufq_add(): (313 bytes): write queue
full or timeout (0, total -2038706176, last write 131535619 s ago)
4(36) ERROR: <core> [core/tcp_main.c:2904]: tcpconn_1st_send():
YYY.YYY.120.101:2855: EAGAIN and write queue full or failed for 0x7fab86821eb8
4(36) DEBUG: <core> [core/tcp_main.c:3171]: tcpconn_chld_put(): destroying
connection 0x7fab86821eb8 (2, -1) flags 0060
4(36) ERROR: msrp [msrp_netio.c:180]: msrp_relay(): forwarding frame failed
4(36) DEBUG: <core> [core/io_wait.h:376]: io_watch_add(): DBG:
io_watch_add(0x5647a5e01ba0, 4, 2, 0x7fab8681db58), fd_no=1
4(36) DEBUG: <core> [core/tcp_read.c:1087]: msrp_process_msg(): MSRP Message:
[[>>>
MSRP 7a06bb2f2057775 SEND
To-Path: msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp
From-Path: msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp
Message-ID: c019ad9285cb154e
Byte-Range: 1-282/282
Success-Report: no
Failure-Report: no
Content-Type: message/cpim
From: dell <sip:+12134567788@example.com>
To: <sip:+12134237682@example.com>
DateTime: 2020-02-08T18:08:29.321289+03:00
MIME-Version: 1.0
Content-Type: text/plain
?OTRv3? I would like to start an Off-the-Record private conversation, but you do not seem
to support that.
-------7a06bb2f2057775$
<<<]]
4(36) DEBUG: msrp [msrp_parser.c:165]: msrp_parse_fline(): MSRP FLine: [1] [MSRP]
[7a06bb2f2057775] [SEND] [1] []
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a9490f0) [To-Path] [2] [msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a949170) [From-Path] [1] [msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a9491f0) [Message-ID] [4] [c019ad9285cb154e]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a95d258) [Byte-Range] [5] [1-282/282]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a95d2d8) [Success-Report] [7] [no]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a95d358) [Failure-Report] [0] [no]
4(36) DEBUG: msrp [msrp_parser.c:325]: msrp_parse_headers(): MSRP Header:
(0x7fab8a95d3d8) [Content-Type] [8] [message/cpim]
4(36) DEBUG: msrp [msrp_parser.c:355]: msrp_parse_headers(): MSRP Body: [284] [[
From: dell <sip:+12134567788@example.com>
To: <sip:+12134237682@example.com>
DateTime: 2020-02-08T18:08:29.321289+03:00
MIME-Version: 1.0
Content-Type: text/plain
?OTRv3? I would like to start an Off-the-Record private conversation, but you do not seem
to support that.
]]
4(36) DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:
4(36) DEBUG: <core> [core/parser/msg_parser.c:611]: parse_msg(): method:
<MSRP>
4(36) DEBUG: <core> [core/parser/msg_parser.c:613]: parse_msg(): uri:
<sip:a@127.0.0.1>
4(36) DEBUG: <core> [core/parser/msg_parser.c:615]: parse_msg(): version:
<SIP/2.0>
4(36) DEBUG: <core> [core/parser/parse_via.c:1300]: parse_via_param(): Found param
type 232, <branch> = <z9hG4bKa>; state=16
4(36) DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header
reached, state=5
4(36) DEBUG: <core> [core/parser/msg_parser.c:498]: parse_headers(): Via found,
flags=2
4(36) DEBUG: <core> [core/parser/msg_parser.c:500]: parse_headers(): this is the
first via
4(36) DEBUG: msrp [msrp_mod.c:538]: msrp_frame_received(): executing
event_route[msrp:frame-in] (1)
4(36) DEBUG: <script>: xlog_helper(): ============#[[SEND]]===========
4(36) DEBUG: <script>: xlog_helper(): ============*[[91.224.133.8:51380]]
4(36) DEBUG: <script>: xlog_helper(): ============ crthop:
[msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ prevhop:
[msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ nexthop:
[msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ firsthop:
[msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ lasthop:
[msrp://YYY.YYY.120.101:2855/628b709ee0444396b567545d28cc5bc5;tcp]
4(36) DEBUG: <script>: xlog_helper(): ============ prevhops: [1]
4(36) DEBUG: <script>: xlog_helper(): ============ nexthops: [1]
4(36) DEBUG: <script>: xlog_helper(): ============ srcaddr:
[msrp://91.224.133.8:51380]
4(36) DEBUG: <script>: xlog_helper(): ============ srcsock:
[tcp:XXX.XXX.120.100:2855]
4(36) DEBUG: msrp [msrp_parser.c:565]: msrp_parse_uri(): MSRP URI: [msrp] []
[XXX.XXX.120.100] [2855] [s.8167.4.1897294566] [tcp] []
4(36) DEBUG: <script>: xlog_helper(): ============ sessid: [s.8167.4.1897294566]
4(36) DEBUG: <core> [core/tcp_main.c:1589]: _tcpconn_find(): found connection by
id: 1
4(36) DEBUG: <core> [core/tcp_main.c:2470]: tcpconn_send_put(): send from reader
(36 (4)), reusing fd
4(36) DEBUG: <core> [core/tcp_main.c:2705]: tcpconn_do_send(): sending...
4(36) DEBUG: <core> [core/tcp_main.c:2738]: tcpconn_do_send(): after real write: c=
0x7fab8681db58 n=230 fd=4
4(36) DEBUG: <core> [core/tcp_main.c:2739]: tcpconn_do_send(): buf=
MSRP 7a06bb2f2057775 200 OK
To-Path: msrp://192.168.122.2:2855/4bc8884925ca0aeb314d;tcp
From-Path: msrp://XXX.XXX.120.100:2855/s.8167.4.1897294566;tcp
Message-ID: c019ad9285cb154e
-------7a06bb2f2057775$
4(36) DEBUG: msrp [msrp_parser.c:565]: msrp_parse_uri(): MSRP URI: [msrp] []
[YYY.YYY.120.101] [2855] [628b709ee0444396b567545d28cc5bc5] [tcp] []
4(36) DEBUG: <core> [core/tcp_main.c:1992]: tcp_send(): no open tcp connection
found, opening new one
4(36) DEBUG: <core> [core/ip_addr.c:223]: print_ip(): tcpconn_new: new tcp
connection: YYY.YYY.120.101
4(36) DEBUG: <core> [core/tcp_main.c:1174]: tcpconn_new(): on port 2855, type 2
4(36) DEBUG: <core> [core/tcp_main.c:1493]: tcpconn_add(): hashes: 3592:0:0, 3
4(36) DEBUG: <core> [core/tcp_main.c:2885]: tcpconn_1st_send(): pending write on
new connection 0x7fab86821eb8 (-1/669 bytes written) (err: 11 - Resource temporarily
unavailable)
4(36) ERROR: <core> [core/tcp_main.c:616]: _wbufq_add(): (669 bytes): write queue
full or timeout (0, total -2038706176, last write 131535619 s ago)
4(36) ERROR: <core> [core/tcp_main.c:2904]: tcpconn_1st_send():
YYY.YYY.120.101:2855: EAGAIN and write queue full or failed for 0x7fab86821eb8
4(36) DEBUG: <core> [core/tcp_main.c:3171]: tcpconn_chld_put(): destroying
connection 0x7fab86821eb8 (3, -1) flags 0060
4(36) ERROR: msrp [msrp_netio.c:180]: msrp_relay(): forwarding frame failed
```
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
/etc/kamailio # kamailio -v
version: kamailio 5.4.0-dev3 (x86_64/linux)
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST,
DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY,
USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR,
USE_DST_BLACKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535,
DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled on 19:57:02 Feb 6 2020 with gcc 9.2.0
```
* **Operating System**:
```
/ # cat /etc/os-release
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.12_alpha20200122
PRETTY_NAME="Alpine Linux edge"
HOME_URL="https://alpinelinux.org/"
BUG_REPORT_URL="https://bugs.alpinelinux.org/"
```
Kamailio packaged into docker container `kamailio/kamailio-ci:master-alpine.debug`.
Commit e9a19d5b4ebff9e06a061efdc5f2b91d4e1bf1b2
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10 Feb
10 Feb
10:08 p.m.
Hi Sergey, did not looked that much into it - but one question: does it only happens with
the TLSF memory manager, and not with the default?
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10:26 p.m.
yes, Henning, only with TLSF
On default manager connection created properly.
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12 Feb
12 Feb
9:47 p.m.
New subject: [kamailio/kamailio] msrp: kamailio cannot create new TCP connection with TSLF memory manager (#2215)
@sergey-safarov - that error code and error message (11 - Resource temporarily
unavailable)) typically happens when the target accepts the connection but it doesn't
read data, so the sender app is filling the socket buffer.
From the logs, the connection is created and added to
the internal hash, so that is not the problem, but transmitting the data seems to be the
issue. What is the receiving party? A sip phone with msrp support, or some generic tool?
On the other hand, it is strange that you get it when using tlsf memory manager ...
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10:44 p.m.
New subject: [kamailio/kamailio] msrp: kamailio cannot create new TCP connection with TSLF memory manager (#2215)
Daniel, received is FreeSwitch.
As wrote above Kamailio do not send any data. Kamailio just send two packets.
1) `SYN` and receive `SYN/ACK` packet;
2) `RST` packet.
Also I start kamailio without `-x tlsf` arg with same config to same FreeSwitch, then
Kamailio able send MSP message to FreeSwitch.
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13 Feb
13 Feb
9:18 a.m.
New subject: [kamailio/kamailio] msrp: kamailio cannot create new TCP connection with TSLF memory manager (#2215)
The errno and errno string are printed because send() on tcp socket failed, but that is
after the connection was established.
Anyhow, the error might have been because of a shared pointer not being initialized, that
resulted in closing the connection. I pushed a commit to master branch, can you give it a
try and see how it goes this time?
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2:57 p.m.
New subject: [kamailio/kamailio] msrp: kamailio cannot create new TCP connection with TSLF memory manager (#2215)
Closed #2215.
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2:57 p.m.
New subject: [kamailio/kamailio] msrp: kamailio cannot create new TCP connection with TSLF memory manager (#2215)
I have tested 994a8dfc070d84b5dad28fa873d8759280c910f2 commit
Now `TCP` connection opens properly.
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1754
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1759
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7 comments
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participants (3)
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Daniel-Constantin Mierla -
Henning Westerholt
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sergey-safarov