Thread: Parsing a string to get the ip address

Hello

g++ (GCC) 4.6.2

I have a string that I need parse. The string is sdp information. I am trying to seperate each of the elements into seperate strings.

Basically the string would contain some thing like this:

Code:

v=0 o=sip_user IN 10230 22472 IP4 NET.CAT.NTBC s=SIP_CALL c=IN IP4 10.10.10.44 m=audio 49152 RTP/AVP 0 8 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000

What is the best method to get the ip address?

I was trying something like this:

Code:

char *ip_addr = NULL  
str_v = strstr(sdp_string, "c=");

if(ip_addr != NULL) {
    printf("found line: [ %s ]", ip_addr);
}

Many thanks for any suggestions,

Well if the c= is unique, and the IP address is always a fixed number of chars following on from there, then you can do things like

ip_addr = str_v + 10;