How do I check if a web service is running?

[JustFillingIn]

I am calling a web service using a socket call. I want to prevent my client app from 'hanging' until the socket call times out if the service is not running. The app is working fine if the service is running.

//Create the Socket
sockfd = socket(AF_INET, SOCK_STREAM, 0);

if (sockfd < 0)
{
printf("errno %d: %s\n",errno,strerror(errno));
set_output_data(in_out_address->error,
"E991",
ERROR_SIZE);
return;
};
printf("errno %d: %s\n",errno,strerror(errno));
printf("sockfd %d: %s\n",sockfd,"socket call");

//Connect
errno=0;
connresult = connect(sockfd,(struct sockaddr *)&server_addr,
sizeof(server_addr));
if (connresult < 0)
{
printf("errno %d: %s\n",errno,strerror(errno));
set_output_data(in_out_address->error,
"E992",
ERROR_SIZE);
return;
}
printf("errno %d: %s\n",errno,strerror(errno));
printf("connresult %d: %s\n",connresult,"connection call");

// check if service is running before we send data

 

[Diancecht]

Any help here?

Cheers,
Dian

 

[xwb]

Is the web service running on your machine or on the remote machine

 

[JustFillingIn]

The web service is running on one of our network servers.

 

[JustFillingIn]

Thank you Dian. I receieved a compile error when I used the suggested code, so there may be a header file that I am missing. Here are the ones I am using.
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <stdbool.h>
#include <errno.h>

I tried to just use the setsockopt command without the if to set the timeout, and the program compiled fine but returned an error code at runtime indicating an unsupported function. I think for now, we are just going to let the client application timeout on its own if the service is not running since it is rarely the situation.