How to send a message to a listener

For network communication testing purposes we recommend the Freeware

Hercules SETUP utility https://www.hw-group.com/software/hercules-setup-utility

Possible listener protocol types are :

- TCP

- UDP

- TLS

Example:

int main(void) 

{

    int sd = copen(TCP,"127.0.0.1",4711,1000);

    if(cconnected(sd))

    {

        printf("Connection successfull\n");

         /* write message to listener */

        cwrite(sd,"Hello listener",strlen("Hello listener"),1000);

    }

    else

      printf("connection failed\n");

    cclose(sd);

    return 0;

 }