Ticket #5716: test_client.cpp

#include <unistd.h>
#include <memory.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

const unsigned short TEST_PORT = 40000;

void usage() {
    printf("client [tcp|udp] [4|6] [4|6]\n");
    exit(1);
}

int main(int argc, char *argv[]) {
    int socketType = SOCK_DGRAM;
    int socketFamily1 = AF_INET;
    int socketFamily2 = AF_INET;

    if (argc > 1) {
        if (!strcmp(argv[1], "tcp")) {
            socketType = SOCK_STREAM;
        } else if (!strcmp(argv[1], "udp")) {
            socketType = SOCK_DGRAM;
        } else {
            usage();
        }
    }
    if (argc > 2) {
        switch (atoi(argv[2])) {
        case 4:
            socketFamily1 = AF_INET;
            break;
        case 6:
            socketFamily1 = AF_INET6;
            break;
        default:
            usage();
        }
    }
    if (argc > 3) {
        switch (atoi(argv[3])) {
        case 4:
            socketFamily2 = AF_INET;
            break;
        case 6:
            socketFamily2 = AF_INET6;
            break;
        default:
            usage();
        }
    }

    int fd = socket(socketFamily1, socketType, 0);
    if (fd < 0) {
        perror("socket");
        return -1;
    }

    sockaddr_storage saddr;
    memset(&saddr, 0, sizeof(saddr));
    saddr.ss_family = socketFamily2;
    ((sockaddr_in *) &saddr)->sin_port = htons(TEST_PORT);
    if (connect(fd, (sockaddr *) &saddr, socketFamily2 == AF_INET ?
                sizeof(sockaddr_in) : sizeof(sockaddr_in6)) < 0) {
        perror("connect");
        close(fd);
        return -1;
    }

    const char *buffer = "hello world";
    unsigned len = strlen(buffer);
    int ret = send(fd, buffer, len, 0);
    if (ret < len) {
        if (ret < 0) {
            perror("send");
        } else if (ret == 0) {
            printf("no data sent!\n");
        } else {
            printf("not all data sent!\n");
        }
    } else {
        printf("send(): success\n");
    }
    close(fd);
    return 0;
}