【发布时间】：2016-03-29 19:56:17
【问题描述】：
我正在尝试创建消息服务器，但此代码有错误：
报错“每个socket地址只能正常使用一次”
服务器：
class Program
{
//Server Control
static bool stop = false;
static bool pause_listening = false;
//Server Info
static int port = 11000;
static string server_ip = null;
//User Declaration
static List<user> allUsers = new List<user>();
static int users = 0;
//IP Address
static IPAddress ipaddr;
static IPEndPoint localEP;
static IPEndPoint userportEP;
static IPEndPoint temp;
//Data
static string data = null;
static byte[] bytes = new Byte[1024];
//Threads
static Thread listener = new Thread(listen);
static Thread server_control = new Thread(Options);
static Thread UserPort = new Thread(addUserPort);
static void Main(string[] args)
{
Console.WriteLine("Message Server");
start();
}
static void start()
{
server_ip = input("What is your local IPv4 address");
ipaddr = IPAddress.Parse(server_ip);
allUsers.Add(new user());
allUsers[users].name = "Admin";
allUsers[users].ip = server_ip;
allUsers[users].desc = "Nimda";
allUsers[users].id = 0;
localEP = new IPEndPoint(ipaddr, port);
userportEP = new IPEndPoint(ipaddr, 1300);
UserPort.Start();
listener.Start();
server_control.Start();
}
static void addUserPort()
{
Socket listener = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and
// listen for incoming connections.
try
{
listener.Bind(userportEP);
listener.Listen(10);
Console.WriteLine("User Listener Started");
// Start listening for connections.
while (pause_listening || stop != true)
{
// Program is suspended while waiting for an incoming connection.
Socket handler = listener.Accept();
string value = null;
// An incoming connection needs to be processed.
while (true)
{
bytes = new byte[1024];
int bytesRec = handler.Receive(bytes);
value += Encoding.ASCII.GetString(bytes, 0, bytesRec);
if (value.IndexOf("<!EOM>") > -1)
{
Console.WriteLine("Someone Requested");
if(value.IndexOf( "!au") > -1)
{
String[] rawData = value.Split('|');
String[] userData = new String[3];
for(int x = 0; x < rawData.Length; x++)
{
String stringbuff = rawData[x];
if(stringbuff.IndexOf("name:") > -1)
{
var tempData = stringbuff.Split(':');
userData[x] = tempData[0];
}
else if (stringbuff.IndexOf("ipaddr:") > -1)
{
var tempData = stringbuff.Split(':');
userData[x] = tempData[1];
}
else if (stringbuff.IndexOf("desc:") > -1)
{
var tempData = stringbuff.Split(':');
userData[x] = tempData[2];
}
}
addUser(userData[0], userData[1], userData[2]);
}
break;
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
static void listen()
{
Socket listener = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
Console.WriteLine("Message Listener Started");
try
{
listener.Bind(localEP);
listener.Listen(10);
while (pause_listening || stop != true)
{
Socket handler = listener.Accept();
data = null;
while (true)
{
bytes = new byte[1024];
int bytesRec = handler.Receive(bytes);
data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
if (data.IndexOf("<!EOM>") > -1 && data.IndexOf("<!META>") > -1)
{
textSent(data);
break;
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
static void addUser(String name, String ip, String desc)
{
users++;
allUsers.Add(new user());
userportEP = new IPEndPoint(IPAddress.Parse(ip), 1300);
allUsers[users].name = name;
allUsers[users].ip = ip;
allUsers[users].desc = desc;
allUsers[users].id = users;
byte[] msg = Encoding.ASCII.GetBytes(string.Format("!Join<!PORT>{0}<!PORT><!EOM>", port));
Socket confirm = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
confirm.Bind(userportEP);
confirm.Connect(userportEP);
confirm.Send(msg);
confirm.Shutdown(SocketShutdown.Both);
confirm.Close();
}
static String input(String inputText)
{
Console.WriteLine(inputText);
return Console.ReadLine();
}
static void Options()
{
while(stop == false)
{
Console.Write("\n Server>>");
String command = Console.ReadLine();
switch (command)
{
case "stop":
stop = true;
listener.Abort();
UserPort.Abort();
StopServer();
break;
default:
Console.WriteLine("\t The command \"{0} \" is not valid", command);
break;
}
}
}
static void StopServer()
{
Console.WriteLine("Server is stopping");
Console.Read();
}
static void textSent(String text)
{
String[] rawText = text.Split(new string[] { "<!META>" }, StringSplitOptions.None) ;
String message = rawText[0];
String[] meta = rawText[1].Split(':');
String package = meta[0] + ": " + message + "<!EOM>";
SendToAll(package);
}
static void SendToAll(String pack)
{
byte[] msg = Encoding.ASCII.GetBytes(pack);
Socket send_socket= new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
for (int x = 0; allUsers.Count < x; x++)
{
temp = new IPEndPoint(IPAddress.Parse(allUsers[x].ip), port);
send_socket.Bind(temp);
send_socket.Connect(temp);
send_socket.Send(msg);
}
send_socket.Shutdown(SocketShutdown.Both);
send_socket.Close();
}
}
客户：
class Program
{
static int port;
static string server_ip;
static string ign;
static string desc;
static string ip;
static bool connected = false;
static bool exit = false;
static IPEndPoint remoteEP;
static IPEndPoint remoteUserRequestEP;
static IPEndPoint localEP;
static IPEndPoint userRequestListen;
static Socket listen;
static Socket send;
static Thread listenThread;
static Thread sendThread;
static void Main(string[] args)
{
Console.WriteLine("Message Client");
start();
}
static void start()
{
server_ip = input("Please Enter your Server I.P.");
remoteUserRequestEP = new IPEndPoint(IPAddress.Parse(server_ip), 1300);
ip = input("Enter your local IPv4 Address");
desc = input("Enter a short description");
ign = input("Enter a name to represent yourself");
localEP = new IPEndPoint(IPAddress.Parse(ip), 11000);
userRequestListen = new IPEndPoint(IPAddress.Parse(ip), 1300);
listenThread = new Thread(listening);
sendThread = new Thread(createSend);
listenThread.Start();
sendThread.Start();
}
static String input(String inputText)
{
Console.WriteLine(inputText);
return Console.ReadLine();
}
static void listening()
{
listen = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
String data;
byte[] bytes;
try
{
listen.Bind(localEP);
listen.Listen(1);
while (exit == false)
{
Socket handler = listen.Accept();
data = null;
while (true)
{
bytes = new byte[1024];
int bytesRec = handler.Receive(bytes);
data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
if (data.IndexOf("<!EOM>") > -1 )
{
string finalMSG = data.Replace("<!EOM>", null);
Console.WriteLine(finalMSG);
break;
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
static void requestAcesss()
{
byte[] msg = new byte[1024];
msg = Encoding.ASCII.GetBytes(string.Format("!au|name:{0}|ipaddr:{1}|desc:{2}|<!EOM>", ign, ip, desc));
Socket usrRequest = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
usrRequest.Bind(userRequestListen);
usrRequest.Connect(userRequestListen);
usrRequest.Send(msg);
try {
while (connected == false)
{
Socket handler = usrRequest.Accept();
string value = null;
while (true)
{
byte[] bytes = new byte[1024];
int bytesRec = handler.Receive(bytes);
value += Encoding.ASCII.GetString(bytes, 0, bytesRec);
if (value.IndexOf("<!EOM>") > -1)
{
String[] raw = value.Split(new string[] { "<!PORT>" }, StringSplitOptions.None);
port = Int32.Parse(raw[1]);
remoteEP = new IPEndPoint(IPAddress.Parse(server_ip), port);
localEP = new IPEndPoint(IPAddress.Parse(ip), port);
Console.WriteLine(port);
connected = true;
startServices();
}
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
static void createSend()
{
byte[] msg = new byte[1024];
send = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
while(exit == false)
{
string raw = Console.ReadLine();
if (raw == "exit")
{
exit = true;
listenThread.Abort();
sendThread.Abort();
stop();
break;
}
string finalmsg = string.Format( raw + "<!META>name:{0}<!META><!EOM>", ign);
send.Bind(localEP);
msg = Encoding.ASCII.GetBytes(finalmsg);
send.Send(msg);
}
send.Shutdown(SocketShutdown.Both);
send.Close();
}
static void startServices()
{
listenThread.Start();
sendThread.Start();
}
static void stop()
{
Console.WriteLine("Press any key to terminate");
Console.ReadLine();
}
}
套接字不会被使用两次，线程也不会启动两次。
【问题讨论】：
-
请将您的代码缩减为MCVE。没有人愿意阅读 300 行代码来寻找错误
-
只有一个进程可以监听一个特定的端口。您的客户端和服务器都尝试侦听相同的端口。使用 TcpListener 和 TcpClient 类对你来说会更容易..
-
它们是独立的类，我在不同的设备上运行它们。你是说一个线程只能打开一个套接字？
-
@DownTheBasket 不，
I run them on different devices那么就可以了。