[asterisk-dev] C Code to connect to Asterisk Manager

[Russell Bryant]

Soumya Kat wrote:
> I have changed the code as you said with strcpy and now I can connect 
> with Asterisk Manager Interface. I can correctly see that admin is 
> trying to login in from 192.168.0.150 <http://192.168.0.150>. The 
> problem that I am facing now is after authentication if I try to ping 
> the server the response I get is Response: Error and states that there 
> is no action.
> 
> Here is my code:
> 
> #define MAX_MSG_SIZE 3072
> #define SERVER_ADDRESS "192.168.0.150 <http://192.168.0.150/>"
> #define CLIENT_ADDRESS "192.168.0.150 <http://192.168.0.150/>"
> #define SERVER_PORT 5038
> #define    CLIENT_PORT 5100
> 
> int main()
> {
>   int sd;
>   struct sockaddr_in serveraddr, clientaddr;
>   char msg[MAX_MSG_SIZE];
>   char resp[MAX_MSG_SIZE];
> 
>   bzero((char *) &serveraddr, sizeof(serveraddr));
>   serveraddr.sin_family = AF_INET;
>   serveraddr.sin_addr.s_addr = inet_addr(SERVER_ADDRESS);
>   serveraddr.sin_port = htons(SERVER_PORT);
> 
>   bzero((char *) &clientaddr, sizeof(clientaddr));
>   clientaddr.sin_family = AF_INET;
>   clientaddr.sin_addr.s_addr = INADDR_ANY;
>   clientaddr.sin_port = htons(CLIENT_PORT);
> 
>   sd = socket(AF_INET, SOCK_STREAM, 0);
> 
>   bind(sd,(struct sockaddr *) &clientaddr, sizeof(clientaddr));

Setting up clientaddr and calling bind() is useless for a client application, 
but that is not the cause of your problem ...

> 
>   connect(sd,(struct sockaddr *) &serveraddr, sizeof(serveraddr));
> 
> strcpy(msg,"Action: Login\r\nUsername: admin\r\nSecret: admin\r\n\r\n");
> send(sd,msg,strlen(msg)+1,0);

... this is.  Take off the "+1" here and in your next call to send().

Be sure to try to understand why these changes have been necessary and don't 
just make them.  :)

> recv(sd,resp, sizeof resp,0);
> printf("%s",resp);
> strcpy(resp," ");
> 
> sleep(1);
> 
> strcpy(msg,"Action: Ping\r\n\r\n");
> send(sd,msg,strlen(msg)+1,0);
> recv(sd,resp,sizeof resp,0);
> printf("%s",resp) // In here it prints Response: Error.
> close(sd);
> 
> return(1);
> }
> 
> Now why is it so ? It should return Response: Pong as I am still 
> connected with Asterisk Manager.


-- 
Russell Bryant
Senior Software Engineer
Open Source Team Lead
Digium, Inc.