mirror of
https://github.com/g4klx/DMRGateway
synced 2025-12-27 17:35:40 +08:00
Add experimental RT8 GPS data handling.
This commit is contained in:
Jonathan Naylor
232
TCPSocket.cpp
Normal file
232
TCPSocket.cpp
Normal file
@@ -0,0 +1,232 @@
|
||||
/*
|
||||
* Copyright (C) 2010-2013,2016 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include "TCPSocket.h"
|
||||
#include "UDPSocket.h"
|
||||
#include "Log.h"
|
||||
|
||||
#include <cstdio>
|
||||
#include <cassert>
|
||||
#include <cstring>
|
||||
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
typedef int ssize_t;
|
||||
#else
|
||||
#include <cerrno>
|
||||
#endif
|
||||
|
||||
CTCPSocket::CTCPSocket(const std::string& address, unsigned int port) :
|
||||
m_address(address),
|
||||
m_port(port),
|
||||
m_fd(-1)
|
||||
{
|
||||
assert(!address.empty());
|
||||
assert(port > 0U);
|
||||
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
WSAData data;
|
||||
int wsaRet = ::WSAStartup(MAKEWORD(2, 2), &data);
|
||||
if (wsaRet != 0)
|
||||
LogError("Error from WSAStartup");
|
||||
#endif
|
||||
}
|
||||
|
||||
CTCPSocket::~CTCPSocket()
|
||||
{
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
::WSACleanup();
|
||||
#endif
|
||||
}
|
||||
|
||||
bool CTCPSocket::open()
|
||||
{
|
||||
if (m_fd != -1)
|
||||
return true;
|
||||
|
||||
if (m_address.empty() || m_port == 0U)
|
||||
return false;
|
||||
|
||||
m_fd = ::socket(PF_INET, SOCK_STREAM, 0);
|
||||
if (m_fd < 0) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Cannot create the TCP client socket, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Cannot create the TCP client socket, err=%d", errno);
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
struct sockaddr_in addr;
|
||||
::memset(&addr, 0x00, sizeof(struct sockaddr_in));
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = htons(m_port);
|
||||
addr.sin_addr = CUDPSocket::lookup(m_address);
|
||||
|
||||
if (addr.sin_addr.s_addr == INADDR_NONE) {
|
||||
close();
|
||||
return false;
|
||||
}
|
||||
|
||||
if (::connect(m_fd, (sockaddr*)&addr, sizeof(struct sockaddr_in)) == -1) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Cannot connect the TCP client socket, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Cannot connect the TCP client socket, err=%d", errno);
|
||||
#endif
|
||||
close();
|
||||
return false;
|
||||
}
|
||||
|
||||
int noDelay = 1;
|
||||
if (::setsockopt(m_fd, IPPROTO_TCP, TCP_NODELAY, (char *)&noDelay, sizeof(noDelay)) == -1) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Cannot set the TCP client socket option, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Cannot set the TCP client socket option, err=%d", errno);
|
||||
#endif
|
||||
close();
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int CTCPSocket::read(unsigned char* buffer, unsigned int length, unsigned int secs, unsigned int msecs)
|
||||
{
|
||||
assert(buffer != NULL);
|
||||
assert(length > 0U);
|
||||
assert(m_fd != -1);
|
||||
|
||||
// Check that the recv() won't block
|
||||
fd_set readFds;
|
||||
FD_ZERO(&readFds);
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
FD_SET((unsigned int)m_fd, &readFds);
|
||||
#else
|
||||
FD_SET(m_fd, &readFds);
|
||||
#endif
|
||||
|
||||
// Return after timeout
|
||||
timeval tv;
|
||||
tv.tv_sec = secs;
|
||||
tv.tv_usec = msecs * 1000;
|
||||
|
||||
int ret = ::select(m_fd + 1, &readFds, NULL, NULL, &tv);
|
||||
if (ret < 0) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Error returned from TCP client select, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Error returned from TCP client select, err=%d", errno);
|
||||
#endif
|
||||
return -1;
|
||||
}
|
||||
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
if (!FD_ISSET((unsigned int)m_fd, &readFds))
|
||||
return 0;
|
||||
#else
|
||||
if (!FD_ISSET(m_fd, &readFds))
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
ssize_t len = ::recv(m_fd, (char*)buffer, length, 0);
|
||||
if (len == 0) {
|
||||
return -2;
|
||||
} else if (len < 0) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Error returned from recv, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Error returned from recv, err=%d", errno);
|
||||
#endif
|
||||
return -1;
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
int CTCPSocket::readLine(std::string& line, unsigned int secs)
|
||||
{
|
||||
// Maybe there is a better way to do this like reading blocks, pushing them for later calls
|
||||
// Nevermind, we'll read one char at a time for the time being.
|
||||
int resultCode;
|
||||
int len = 0;
|
||||
|
||||
line.clear();
|
||||
|
||||
char c[2U];
|
||||
c[1U] = 0x00U;
|
||||
|
||||
do
|
||||
{
|
||||
resultCode = read((unsigned char*)c, 1U, secs);
|
||||
if (resultCode == 1){
|
||||
line.append(c);
|
||||
len++;
|
||||
}
|
||||
} while (c[0U] != '\n' && resultCode == 1);
|
||||
|
||||
return resultCode <= 0 ? resultCode : len;
|
||||
}
|
||||
|
||||
bool CTCPSocket::write(const unsigned char* buffer, unsigned int length)
|
||||
{
|
||||
assert(buffer != NULL);
|
||||
assert(length > 0U);
|
||||
assert(m_fd != -1);
|
||||
|
||||
ssize_t ret = ::send(m_fd, (char *)buffer, length, 0);
|
||||
if (ret != ssize_t(length)) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
LogError("Error returned from send, err=%d", ::GetLastError());
|
||||
#else
|
||||
LogError("Error returned from send, err=%d", errno);
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CTCPSocket::writeLine(const std::string& line)
|
||||
{
|
||||
std::string lineCopy(line);
|
||||
if (lineCopy.length() > 0 && lineCopy.at(lineCopy.length() - 1) != '\n')
|
||||
lineCopy.append("\n");
|
||||
|
||||
//stupidly write one char after the other
|
||||
size_t len = lineCopy.length();
|
||||
bool result = true;
|
||||
for (size_t i = 0U; i < len && result; i++){
|
||||
unsigned char c = lineCopy.at(i);
|
||||
result = write(&c , 1);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
void CTCPSocket::close()
|
||||
{
|
||||
if (m_fd != -1) {
|
||||
#if defined(_WIN32) || defined(_WIN64)
|
||||
::closesocket(m_fd);
|
||||
#else
|
||||
::close(m_fd);
|
||||
#endif
|
||||
m_fd = -1;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user