如何确定socket连接成功？ c#socket异步连接后怎样判断连接是否成功
java\u4e2d\u600e\u4e48\u5224\u65adsocket\u662f\u5426\u8fde\u63a5\u6210\u529f\u5de5\u7a0b\u91cc\u9047\u5230\u4e86\u9700\u8981\u5224\u65adSocket\u662f\u5426\u5df2\u7ecf\u5173\u95ed\u7684\u95ee\u9898\uff0c\u4f7f\u7528
public boolean isAlive(){ if(mSocket.equals(null)||mSocket.isClosed()||!mSocket.isConnected()||mSocket.isInputShutdown()||mSocket.isOutputShutdown()){ MyLog.d("mSocket.isConnected()"+mSocket.isConnected()); return false; }else{ MyLog.d("mSocket.isConnected()"+mSocket.isConnected()); return true; } } \u6beb\u65e0\u4f5c\u7528\uff0c\u968f\u540e\u67e5\u770b\u4e86\u7f51\u4e0a\u5148\u5173\u89e3\u51b3\u529e\u6cd5\uff0c\u53d1\u73b0Socket\u4e2d\u6709\u4e00\u4e2a\u65b9\u6cd5void sendUrgentData(0xFF)\u5f53\u5bf9\u65b9SO_OOBINLINE\u5c5e\u6027\u6ca1\u6709\u6253\u5f00\u65f6\uff0c\u5c31\u4f1a\u81ea\u52a8\u820d\u5f03\u8fd9\u4e2a\u5b57\u8282\uff0c\u800cSO_OOBINLINE\u5c5e\u6027\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5c31\u662f\u5173\u95ed\u7684\uff0c\u4f46\u662f\u53ea\u8981\u80fd\u591f\u53d1\u9001\u5230\u5bf9\u65b9Socket\uff0csendUrgentData(0xFF)\u65b9\u6cd5\u5c31\u4e0d\u4f1a\u62a5\u9519\uff0c\u53ea\u8981catch\u4e00\u4e0bIOException\u5c31OK\u4e86\uff0c\u5f53\u5bf9\u65b9\u5173\u6389\u4e86Socket\u4e4b\u540e\u5c31\u4f1a\u8fdb\u5165catch\uff0c\u95ee\u9898\u8fce\u5203\u800c\u89e3\u3002
try{ mSocket.sendUrgentData(0xFF); }catch(IOException e){ Log.d(e+":\u8981\u5173\u6389\u4e86\u963f \uff01"); mSocket.close(); } \u5f53socket\u65ad\u6389\u4e4b\u540e\uff0c\u629b\u51fajava.net.socketexception broken pipe\u5f02\u5e38\uff0c\u6ca1\u6709\u95ee\u9898\u3002
//\u8fd9\u662f\u4f8b\u5b50\uff0c\u4f60\u53c2\u8003\u53c2\u8003private int connToServer(string hostip, int hostport,int ctimeout) { IPEndPoint remoteEp = new IPEndPoint(IPAddress.Parse(hostip),hostport); try { connDone.Reset(); //\u5f00\u59cb\u8fde\u63a5 cliSock.BeginConnect(remoteEp, new AsyncCallback(connCallBack), cliSock); connDone.WaitOne(ctimeout, false); if (!cliSock.Connected) { //\u8fde\u63a5\u8d85\u65f6 return CONNTIMEOUT; } //\u8fde\u63a5\u6210\u529f return 0; } catch (SocketException ex) { //\u8fde\u63a5\u5931\u8d25 cliSock.Close(); return CONNTIMEOUT; } catch (Exception ex) { //\u8fde\u63a5\u5931\u8d25 cliSock.Close(); return CONNTIMEOUT; } } private void connCallBack(IAsyncResult ar) { Socket s = (Socket)ar.AsyncState; try { s.EndConnect(ar); isConnected = s.Connected; } catch (Exception ex) { isConnected = false; //\u53d1\u751f\u9519\u8bef return; } finally { connDone.Set(); } }
TCP的我不是很了解,大致是先绑定客户端套接字,设置好服务器端socket后使用connect函数连接,如果返回0就说明连接成功服务器SOCKET accept(
SOCKET s,
struct sockaddr* addr,
int* addrlen
);
成功返回SOCKET失败返回INVALID_SOCKET
客户端
int connect(
SOCKET s,
const struct sockaddr* name,
int namelen
);
成功返回zero失败返回SOCKET_ERROR
用QQ登陆设置---代理设置---测试
连接通常是调用connect函数，connect函数返回0表示连接成功，返回-1表示出错，同时该函数还影响errno,比如如果连接超时connect返回-1,同时置errno为etimedout.
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绛旓細//杩欐槸渚嬪瓙锛屼綘鍙傝冨弬鑰僷rivate int connToServer(string hostip, int hostport,int ctimeout) { IPEndPoint remoteEp = new IPEndPoint(IPAddress.Parse(hostip),hostport); try { connDone.Reset(); //寮濮杩炴帴 cliSock.BeginConnect(remoteEp, new AsyncCallback(connCall...
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