客户端是跨平台应用程序（android＆ios）（C＃）服务器是Windows . （C）
我成功连接到服务器但在此服务器recv函数后认真返回0 . 但是当我尝试使用c客户端连接服务器时，我不会遇到这个问题 .
当客户端关闭Recv函数返回0所以我不想做“继续”;如果recv返回0 .
我将此客户端代码添加到Button . 单击按钮后套接字是否关闭？
客户端C＃代码：
private static async void ConnectAsTcpClient()
{
using (var tcpClient = new TcpClient())
{
//Console.WriteLine("[Client] Connecting to server");
await tcpClient.ConnectAsync("127.0.0.1", 12312);
Console.WriteLine("[Client] Connected to server");
}
}
服务器C代码：SOCKET袜子;
// for our thread
DWORD thread;
WSADATA wsaData;
sockaddr_in server;
// start winsock
int ret = WSAStartup(0x101, &wsaData); // use highest version of winsock avalible
if (ret != 0)
{
return 0;
}
// fill in winsock struct ...
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons(12312); // listen on telnet port 23
// create our socket
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == INVALID_SOCKET)
{
return 0;
}
// bind our socket to a port(port 123)
if (bind(sock, (sockaddr*)&server, sizeof(server)) != 0)
{
return 0;
}
// listen for a connection
if (listen(sock, 5) != 0)
{
return 0;
}
// socket that we snedzrecv data on
SOCKET client;
sockaddr_in from;
int fromlen = sizeof(from);
printf("Server Started\n");
client = accept(sock, (struct sockaddr*)&from, &fromlen);
printf("Client connected\r\n");
while (true)
{
res = recv(current_client, buf, sizeof(buf), 0); // recv cmds
// multi Thread
Sleep(30);
if (res == 0 || res >= 150)
{
printf("Recv Failed! = %d\n", res);
continue;
}
1 回答
客户端不写任何内容，而是让
tcpClient对象超出范围，这会断开连接，导致recv在服务器中返回0.顺便说一句，你忘了检查
recv调用的实际错误（当res == SOCKET_ERROR时） .