Windows Socket Client

#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
void ErrorHandling(char* message);
 
int main(int argc, char* argv[])
{
    WSADATA wsaData;
    SOCKET hSocket;
    SOCKADDR_IN servAddr;
    char IPaddr[52];
    int port;
 
    char msg[1024];
    int len;
 
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
        ErrorHandling("WSAStartup() errer!");
 
    hSocket = socket(PF_INET, SOCK_STREAM, 0);
    if (hSocket == INVALID_SOCKET)
        ErrorHandling("hSocketet() error!");
 
    memset(&servAddr, 0, sizeof(servAddr));
    servAddr.sin_family = AF_INET;
    servAddr.sin_addr.s_addr = inet_addr(IPaddr);
    servAddr.sin_port = htons(port);
 
    if (connect(hSocket, (SOCKADDR*)&servAddr, sizeof(servAddr)) == SOCKET_ERROR)
        ErrorHandling("connect() error!");
 
    len = recv(hSocket, msg, sizeof(msg) - 1, 0);
    if (len == -1)
        ErrorHandling("read() error!");
    printf("recv : %s\n", msg);
 
    len = send(hSocket, msg, sizeof(msg) - 1, 0);
    if (len == -1)
        ErrorHandling("read() error!");
    printf("send : %s\n", msg);
 
    closesocket(hSocket);
    WSACleanup();
    return 0;
}
 
void ErrorHandling(char* message)
{
    puts(message);
    exit(1);
}