Ticket #18534: socketpairtest.c

#include <stdio.h>
#include <sys/socket.h>
#include <stdbool.h>

int check(int fd, bool peer) {

    struct sockaddr_storage addr = {0};
    socklen_t len = sizeof(addr);
    int ret;
    if(peer) {
        ret = getpeername(fd, (struct sockaddr *)&addr, &len);
    } else {
        ret = getsockname(fd, (struct sockaddr *)&addr, &len);
    }
    if(ret) {
        if(peer) {
            perror("peername");
        } else {
            perror("sockname");
        }
        return -1;
    }
    return (int)len;
}

int main() {
    int fds[2];
    int domain;
    domain = AF_UNIX;
    // domain = AF_INET; // works for AF_INET
    printf("Domain: %i\n", domain);
    int ret = socketpair(domain, SOCK_STREAM, 0, fds);
    if(ret) {
        perror("Could not get socketpair");
        return 1;
    }
    printf("FDs: a=%i b=%i\n", fds[0], fds[1]);
    printf("Lengths: La=%i Lb=%i Ra=%i Rb=%i\n"
            , check(fds[0], false)
            , check(fds[1], false)
            , check(fds[0], true)
            , check(fds[1], true)
          );

    return 0;
}