/*

 * Copyright 2006, Haiku, Inc. All Rights Reserved.

 * Distributed under the terms of the MIT License.

 *

 * Authors:

 *              Oliver Tappe, zooey@hirschkaefer.de

 */


#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>

#define MAXLEN 32768


static void
udp_client(int sockFD, const struct sockaddr_in* serverAddr)
{
        char sendbuf[MAXLEN];
        long status;

        while (!feof(stdin)) {
                status = fread(sendbuf, 1, MAXLEN, stdin);
                if (status < 0) {
                        printf("fread(): %lx (%s)\n", status, strerror(status));
                        exit(5);
                }
printf("trying to send %ld bytes...\n", status);
                status = sendto(sockFD, sendbuf, status, 0, 
                        (struct sockaddr*)serverAddr, sizeof(struct sockaddr_in));
                if (status < 0) {
                        printf("sendto(): %lx (%s)\n", status, strerror(status));
                        exit(5);
                }
        }
}


int
main(int argc, char** argv)
{
        long status;
        int sockFD;
        struct sockaddr_in serverAddr, clientAddr;

        if (argc < 3) {
                printf("usage: %s <IP-address> <port> [local-port]\n", argv[0]);
                exit(5);
        }

        memset(&serverAddr, 0, sizeof(struct sockaddr_in));
        serverAddr.sin_family = AF_INET;
        serverAddr.sin_port = htons(atoi(argv[2]));
        serverAddr.sin_addr.s_addr = inet_addr(argv[1]);
        printf("addr=%lx port=%u\n", serverAddr.sin_addr.s_addr, ntohs(serverAddr.sin_port));

        sockFD = socket(AF_INET, SOCK_DGRAM, 0);

        if (argc > 3) {
                memset(&clientAddr, 0, sizeof(struct sockaddr_in));
                clientAddr.sin_family = AF_INET;
                clientAddr.sin_port = htons(atoi(argv[3]));
                printf("binding to port %u\n", ntohs(clientAddr.sin_port));
                status = bind(sockFD, (struct sockaddr *)&clientAddr, sizeof(struct sockaddr_in));
                if (status < 0) {
                        printf("bind(): %lx (%s)\n", status, strerror(status));
                        exit(5);
                }
        }

        udp_client(sockFD, &serverAddr);
        return 0;
}