我目前正在編寫一個C++模塊,它創建一個套接字服務器線程,每隔1ms輪詢accept()函數。我有一個測試模塊,它欺騙了一個也在運行的客戶端連接。測試模塊啓動創建服務器線程。線程創建並驗證爲正在運行後,客戶端將運行connect()命令作爲測試。我的代碼指出連接已建立,在connect命令上返回0。但是,在我的服務器線程中運行的accept()從不接收連接。C++ Socket Connection自動建立?
服務器綁定到接受任何IP:50000,並在客戶端未綁定,但是具有127.0.0.1:50000組作爲其目的地。我的Linux環境是否自動接受此連接?
這裏是我的服務器的套接字代碼:
int nSocket;
int nOn = 1;
int nControl;
struct sockaddr_in sServerAddress;
nSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(nSocket < 0)
{
std::cout << "Failed to create socket\n";
}
if(setsockopt(nSocket, SOL_SOCKET, SO_REUSEADDR, &nOn, sizeof(int)) < 0)
{
std::cout << "failed to set socket option\n";
}
nControl = fcntl(nSocket, F_GETFL);
if(fcntl(nSocket, F_SETFL, O_NONBLOCK | nControl) < 0)
{
std::cout << "set not blocking failed\n";
}
memset(&sServerAddress, 0x00, sizeof(struct sockaddr_in));
sServerAddress.sin_family = AF_INET;
sServerAddress.sin_addr.s_addr = htonl(INADDR_ANY);
sServerAddress.sin_port = htons(mtListenPort);
if(bind(nSocket, (struct sockaddr*)&sServerAddress, sizeof(struct sockaddr_in)) < 0)
{
std::cout << errno << "bind failed\n";
}
if(listen(nSocket, MAXPENDING) < 0)
{
std::cout << "listen failed\n";
}
這裏是我的測試客戶端的插口代碼:
int nSocket;
nSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(nSocket < 0)
{
std::cout << "Failed to create socket\n";
}
struct sockaddr_in serverAddress;
serverAddress.sin_family = AF_INET;
inet_aton(LOCAL_HOST, &serverAddress.sin_addr);
serverAddress.sin_port = htons(LISTEN_PORT00);
char msg[] = "Hello World.";
usleep(10000);
if (connect(nSocket, (struct sockaddr *) &serverAddress, sizeof(serverAddress)) < 0)
{
std::cout << errno << "Could not connect to the server.\n";
}
usleep(10000);
if (sendto(nSocket, msg, strlen(msg), 0, (struct sockaddr *) &serverAddress, sizeof(serverAddress)) < 0)
{
std::cout << errno << "Could not send data to the server.\n";
}
這裏是線程的一小部分運行在接受碼。
while(mbListening)
{
nMessengerSocket = accept(mnSocket, (struct sockaddr*)&sClientAddr, &tClientAddrLength);
if(nMessengerSocket >= 0)
{
std::cout << "Accepted connection from " << inet_ntoa(sClientAddr.sin_addr) << std::endl;
mnConnections++;
mbListening = false;
}
mThreadRunningTime++;
usleep(1000);
}
你在哪裏調用'accept()'? –
哦,我的錯。我在線程中運行的循環中調用它。我會更新代碼。 – jetbomber117
不要每隔1ms輪詢一次!你到底在做什麼?使用阻塞套接字或選擇! –