Re: [Lksctp-developers] Issue in sctp_getladdrs

[Vlad Y. <vla...@hp...>]

Vlad Yasevich wrote:
> Florian Niederbacher wrote:
>> Hi,
>> is there a failure in my code that I get always a segmentation fault 
>> when i try to get all local addresses with sctp_getladdrs() without a 
>> doing a bind before? Normally it should end up with a return of the 
>> value 0 in addr_count. If a bind() is done in the programm works fine 
>> and prints out all local IP addresses. But I need also the case when no 
>> local address is bound.
>>
> 
> It's a bug in lksctp-tools.  Thanks for finding it.

Never mind.  It's already been fixed.  You need to use 1.0.8 version of
lksctp tools to get this fix.

-vlad

> 
> -vlad
> 
>> source:
>>
>> #include  <arpa/inet.h>
>> #include  <sys/types.h>
>> #include  <stdio.h>
>> #include  <stdlib.h>
>> #include  <string.h>
>> #include <netinet/sctp.h>
>>
>> int main(int argc,char *argv[])
>> {
>>     struct sockaddr_in addr;
>>     int addr_size = sizeof(struct sockaddr_in);
>>     struct sockaddr *bound_addresses;
>>     int sock;
>>     int addr_count=0;
>>     int i=0;
>>     
>>     /* create socket */
>>     if ( (sock = socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP)) < 0)  {
>>       perror("socket()");
>>         exit(1);
>>     }
>>
>>     /* create server address structure*/
>>     memset(&addr,0,sizeof(addr));
>>     addr.sin_family = AF_INET;
>>     addr.sin_addr.s_addr = INADDR_ANY;
>>     addr.sin_port = 8765;    
>>  
>>     /*
>>     if (bind(sock, (struct sockaddr*)&addr, sizeof(addr)) != 0) {
>>         perror("bind()");
>>         exit(1);
>>     }
>>     */
>>       
>>     addr_count = sctp_getladdrs(sock, 0, &bound_addresses);
>>     printf("addr_count: %d\n",addr_count);
>>  
>>     if(addr_count > 0){
>>         for (i = 0; i < addr_count; i++) {
>>             memcpy(&addr, bound_addresses+i, addr_size);
>>             printf("addr %s, port %d\n",inet_ntoa(addr.sin_addr),
>>                                             addr.sin_port);
>>         }
>>     }
>>     sctp_freeladdrs(bound_addresses);
>>     return 0;
>> }
>>
>>
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> 
> 
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