4 Oct
2019
4 Oct
'19
5:02 a.m.
### Description
Please check attached pcap.
[siptrace.pcap.gz](https://github.com/kamailio/kamailio/files/3688791/siptra…
Kamailio send INVITE (packet 1) from port `TCP/42394`.
SIP trace encapsulate INVITE (packet 2) and encodes Kamailio source port `TCP/5060`
#### Debugging Data
HEP header parsed by lua [disector](https://github.com/sipcapture/hep-wireshark)
```
HEP3 Protocol
HEP ID: HEP3
Length (Bytes): 1574
Protocol family: IPv4
Protocol ID: TCP
Source IPv4 address: 172.21.0.131
Destination IPv4 address: 192.168.57.11
Source port: 5060
Destination port: 5060
Timestamp: 1570150645
Timestamp us: 740165
Protocol Type: SIP
Capture ID: 1
Payload [truncated]: INVITE sip:911@192.168.57.11;transport=tcp
SIP/2.0\r\nRecord-Route:
<sip:172.21.0.131;transport=tcp;lr=on;ftag=KvNj7jXrmK89p>\r\nVia: SIP/2.0/TCP
172.21.0.131;branch=z9hG4bK7c2d.2d8104273b7063309f5694ac963c9ad8.0;i=21
```
[HEP format description located
here](https://github.com/sipcapture/HEP/blob/master/docs/HEP3_Network_Proto….
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
/ # kamailio -v
version: kamailio 5.1.6 (x86_64/linux)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE,
USE_MCAST, DNS_IP_HACK, SHM_MEM, 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
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 11:01:40 Oct 4 2018 with gcc 6.4.0
```
* **Operating System**:
Docker container
Userland
```
/ # cat /etc/os-release
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.8.1
PRETTY_NAME="Alpine Linux v3.8"
HOME_URL="http://alpinelinux.org"
BUG_REPORT_URL="http://bugs.alpinelinux.org"
```
Kernel Amazon Linux 2
```
/ # uname -a
Linux proxy-dc0-0 4.14.128-112.105.amzn2.x86_64 #1 SMP Wed Jun 19 16:53:40 UTC 2019 x86_64
Linux
```
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7 Oct
7 Oct
8:05 p.m.
New subject: [kamailio/kamailio] siptrace: wrong IPv4 address value (#2092)
The address is the socket kamailio is listening on, which is typically ip:5060.
With tcp the source port of connect() cannot be easily ensured (only with latest kernels
when re-using the port option is enabled).
So this is by design, otherwise there will be different ports for each connection.
If you want to change, that's fine, you can make pull request so other can review,
however add a modparam to control this behaviour, with the default option to be like it is
now.
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8:05 p.m.
New subject: [kamailio/kamailio] siptrace: wrong IPv4 address value (#2092)
Closed #2092.
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8:35 p.m.
New subject: [kamailio/kamailio] siptrace: wrong IPv4 address value (#2092)
Thank you Daniel
Could you give me reference to code where outbound TCP socket created/bound.
I will try debug.
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8:42 p.m.
New subject: [kamailio/kamailio] siptrace: wrong IPv4 address value (#2092)
So this is by design, otherwise there will be
different ports for each connection.
I do not mind that different ports are used.
I am for sending the correct information about the source port
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19 Jan
19 Jan
8:41 a.m.
New subject: [kamailio/kamailio] siptrace: wrong IPv4 address value (#2092)
Here is relevant page how to get source port for outbound connection.
https://stackoverflow.com/questions/47095534/how-to-get-local-source-port-f…
How to bind selected port for outbound connection.
https://github.com/openssh/openssh-portable/pull/130
Daniel @miconda could you look this links.
Think first allow resolve issue.
Second link will allow send TCP outbound messages from kamailio `socket` port instead of
random port.
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6 Feb
6 Feb
6:32 p.m.
New subject: [kamailio/kamailio] siptrace: wrong port value (#2092)
Hello Bastian @btriller
Could you looks this issue also.
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30 Jul
30 Jul
8:41 p.m.
New subject: [kamailio/kamailio] siptrace: wrong port value (#2092)
Example how get outbound socket port
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define SERVER_ADDR "172.217.160.99"
#define SERVER_PORT 80
int main()
{
char myIP[16];
unsigned int myPort;
struct sockaddr_in server_addr, my_addr;
int sockfd;
// Connect to server
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("Can't open stream socket.");
exit(-1);
}
// Set server_addr
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr(SERVER_ADDR);
server_addr.sin_port = htons(SERVER_PORT);
// Connect to server
if (connect(sockfd, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0)
{
perror("Connect server error");
close(sockfd);
exit(-1);
}
// Get my ip address and port
bzero(&my_addr, sizeof(my_addr));
socklen_t len = sizeof(my_addr);
getsockname(sockfd, (struct sockaddr *) &my_addr, &len);
inet_ntop(AF_INET, &my_addr.sin_addr, myIP, sizeof(myIP));
myPort = ntohs(my_addr.sin_port);
printf("Local ip address: %s\n", myIP);
printf("Local port : %u\n", myPort);
return 0;
}
```
Found at https://gist.github.com/listnukira/4045436
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273
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1668
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7 comments
2 participants
participants (2)
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Daniel-Constantin Mierla -
sergey-safarov