Something

void messagereceive(void *sock) {
    char goatsecks[1000];
    int x = 0;
    char* buffer;
    char* ptr;
    int BUFFER_LENGTH = 512;

    while(1)
    {
        x = recv((SOCKET)sock, goatsecks, 1000, 0);

        if(x > 0)
        {
            goatsecks[x] = 0;
            if(strstr((char *)goatsecks, "PING") != NULL) 
	    {
		ptr=strstr((char *)goatsecks, "PING")+6;
		sprintf(buffer, "PONG %s", ptr);
		send((SOCKET)sock, buffer, strlen(buffer),0 );
		free(buffer);
            }
        }
        Sleep(10);
    }
}