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#include "simplemotion_private.h"
#include "tcpclient.h"
#include <stdio.h>
#if defined(_WIN32)
#if defined(CM_NONE)
#undef CM_NONE
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#define close closesocket
#define read(SOCKET, BUF, LEN) recv((SOCKET), (BUF), (LEN), 0)
#define write(SOCKET, BUF, LEN) send((SOCKET), (BUF), (LEN), 0)
#ifdef errno
#undef errno
#endif
#define errno (WSAGetLastError())
#ifdef EINPROGRESS
#undef EINPROGRESS
#endif
#define EINPROGRESS WSAEWOULDBLOCK
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/time.h>
#include <netdb.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#endif
#if defined(_WIN32)
static int initwsa()
{
WORD req;
WSADATA data;
req = MAKEWORD(2, 2);
int err = WSAStartup(req, &data);
if (err != 0)
{
printf("WSAStartup failed\n");
return 0;
}
return 1;
}
#endif
int OpenTCPPort(const char * ip_addr, int port)
{
int sockfd;
struct sockaddr_in server;
struct timeval tv;
fd_set myset;
int res, valopt;
socklen_t lon;
long arg;
#if defined(_WIN32)
initwsa();
#endif
//Create socket
sockfd = socket(AF_INET , SOCK_STREAM , IPPROTO_TCP);
if (sockfd == -1)
{
return -1;
}
// Set OFF NAGLE algorithm to reduce latency with small packets
/*
int one = 1;
setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (void *)&one, sizeof(one));
*/
server.sin_addr.s_addr = inet_addr(ip_addr);
server.sin_family = AF_INET;
server.sin_port = htons(port);
// Set non-blocking when trying to establish the connection
#if !defined(_WIN32)
arg = fcntl(sockfd, F_GETFL, NULL);
arg |= O_NONBLOCK;
fcntl(sockfd, F_SETFL, arg);
#else
arg = 1;
ioctlsocket(sockfd, FIONBIO, &arg);
#endif
res = connect(sockfd, (struct sockaddr *)&server, sizeof(server));
if (res < 0)
{
if (errno == EINPROGRESS)
{
tv.tv_sec = 5;
tv.tv_usec = 0;
FD_ZERO(&myset);
FD_SET(sockfd, &myset);
if (select(sockfd+1, NULL, &myset, NULL, &tv) > 0)
{
lon = sizeof(int);
getsockopt(sockfd, SOL_SOCKET, SO_ERROR, (void*)(&valopt), &lon);
if (valopt)
{
return -1;
}
}
else
{
return -1;
}
}
else
{
return -1;
}
}
// Set to blocking mode again
#if !defined(_WIN32)
arg = fcntl(sockfd, F_GETFL, NULL);
arg &= (~O_NONBLOCK);
fcntl(sockfd, F_SETFL, arg);
#else
arg = 0;
ioctlsocket(sockfd, FIONBIO, &arg);
#endif
return sockfd;
}
// Read bytes from socket
int PollTCPPort(int sockfd, unsigned char *buf, int size)
{
int n;
fd_set input;
FD_ZERO(&input);
FD_SET(sockfd, &input);
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = readTimeoutMs * 1000;
n = select(sockfd + 1, &input, NULL, NULL, &timeout);
// Error or timeout
if (n < 1)
{
return(-1);
}
if(!FD_ISSET(sockfd, &input))
{
return(-1);
}
n = read(sockfd, buf, size);
return(n);
}
int SendTCPByte(int sockfd, unsigned char byte)
{
int n;
n = write(sockfd, &byte, 1);
if(n<0)
return(1);
return(0);
}
int SendTCPBuf(int sockfd, unsigned char *buf, int size)
{
int sent = write(sockfd, buf, size);
if (sent != size)
{
return sent;
}
return sent;
}
void CloseTCPport(int sockfd)
{
close(sockfd);
#if defined(_WIN32)
WSACleanup();
#endif
}
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