fsfw/osal/windows/TcWinTcpServer.cpp

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#include "TcWinTcpServer.h"
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#include "tcpipHelpers.h"
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#include "../../serviceinterface/ServiceInterface.h"
#include <winsock2.h>
#include <ws2tcpip.h>
const std::string TcWinTcpServer::DEFAULT_TCP_SERVER_PORT = "7301";
const std::string TcWinTcpServer::DEFAULT_TCP_CLIENT_PORT = "7302";
TcWinTcpServer::TcWinTcpServer(object_id_t objectId, object_id_t tmtcUnixUdpBridge,
std::string customTcpServerPort):
SystemObject(objectId), tcpPort(customTcpServerPort) {
if(tcpPort == "") {
tcpPort = DEFAULT_TCP_SERVER_PORT;
}
}
ReturnValue_t TcWinTcpServer::initialize() {
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using namespace tcpip;
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int retval = 0;
struct addrinfo *addrResult = nullptr;
struct addrinfo hints;
/* Initiates Winsock DLL. */
WSAData wsaData;
WORD wVersionRequested = MAKEWORD(2, 2);
int err = WSAStartup(wVersionRequested, &wsaData);
if (err != 0) {
/* Tell the user that we could not find a usable Winsock DLL. */
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::error << "TmTcWinUdpBridge::TmTcWinUdpBridge: WSAStartup failed with error: " <<
err << std::endl;
#endif
return HasReturnvaluesIF::RETURN_FAILED;
}
ZeroMemory(&hints, sizeof (hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
retval = getaddrinfo(nullptr, tcpPort.c_str(), &hints, &addrResult);
if (retval != 0) {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::warning << "TcWinTcpServer::TcWinTcpServer: Retrieving address info failed!" <<
std::endl;
#endif
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handleError(Protocol::TCP, ErrorSources::GETADDRINFO_CALL);
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return HasReturnvaluesIF::RETURN_FAILED;
}
/* Open TCP (stream) socket */
listenerTcpSocket = socket(addrResult->ai_family, addrResult->ai_socktype,
addrResult->ai_protocol);
if(listenerTcpSocket == INVALID_SOCKET) {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::warning << "TcWinTcpServer::TcWinTcpServer: Socket creation failed!" << std::endl;
#endif
freeaddrinfo(addrResult);
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handleError(Protocol::TCP, ErrorSources::SOCKET_CALL);
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return HasReturnvaluesIF::RETURN_FAILED;
}
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retval = bind(listenerTcpSocket, addrResult->ai_addr, static_cast<int>(addrResult->ai_addrlen));
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if(retval == SOCKET_ERROR) {
sif::warning << "TcWinTcpServer::TcWinTcpServer: Binding socket failed!" <<
std::endl;
freeaddrinfo(addrResult);
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handleError(Protocol::TCP, ErrorSources::BIND_CALL);
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}
freeaddrinfo(addrResult);
return HasReturnvaluesIF::RETURN_OK;
}
TcWinTcpServer::~TcWinTcpServer() {
closesocket(listenerTcpSocket);
WSACleanup();
}
ReturnValue_t TcWinTcpServer::performOperation(uint8_t opCode) {
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using namespace tcpip;
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/* If a connection is accepted, the corresponding socket will be assigned to the new socket */
SOCKET clientSocket;
sockaddr_in clientSockAddr;
int connectorSockAddrLen = 0;
int retval = 0;
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/* Listen for connection requests permanently for lifetime of program */
while(true) {
retval = listen(listenerTcpSocket, currentBacklog);
if(retval == SOCKET_ERROR) {
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handleError(Protocol::TCP, ErrorSources::LISTEN_CALL, 500);
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continue;
}
clientSocket = accept(listenerTcpSocket, reinterpret_cast<sockaddr*>(&clientSockAddr),
&connectorSockAddrLen);
if(clientSocket == INVALID_SOCKET) {
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handleError(Protocol::TCP, ErrorSources::ACCEPT_CALL, 500);
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continue;
};
retval = recv(clientSocket, reinterpret_cast<char*>(receptionBuffer.data()),
receptionBuffer.size(), 0);
if(retval > 0) {
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#if FSFW_TCP_RCV_WIRETAPPING_ENABLED == 1
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sif::info << "TcWinTcpServer::performOperation: Received " << retval << " bytes."
std::endl;
#endif
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handleError(Protocol::TCP, ErrorSources::RECV_CALL, 500);
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}
else if(retval == 0) {
}
else {
}
/* Done, shut down connection */
retval = shutdown(clientSocket, SD_SEND);
}
return HasReturnvaluesIF::RETURN_OK;
}