java.net.SocketException: already connected 错误表明尝试对一个已经处于连接状态的 Socket 对象进行重复连接操作。在 Java 的 Socket 类中,每个 Socket 实例只能与一个远程地址和端口进行一次连接。如果尝试再次调用 connect() 方法,就会抛出此异常。 分析可能导致该错误的情况 重复调用 connect() 方法:在代码中可能...
int connect_socket_timeout(int sockfd,char *dest_host, int port, int timeout) { struct sockaddr_in address; struct in_addr inaddr; struct hostent *host; int err, noblock=1 , connect_ok=0, begin_time=time(NULL); log_debug("connect_socket to %s:%dn",dest_host,port); if (inet_...
packagecom.sjk.socket.onlysend;importjava.io.IOException;importjava.io.InputStream;importjava.net.ServerSocket;importjava.net.Socket;publicclassSocketServer{publicstaticvoidmain(String[] args)throwsIOException {// 1.创建Socket服务端,监听指定端口ServerSocketserverSocket=newServerSocket(6666);// 2.等待客...
packageyiwangzhibujian.onlysend;importjava.io.OutputStream;importjava.net.Socket;publicclassSocketClient {publicstaticvoidmain(String args[])throwsException {//要连接的服务端IP地址和端口String host = "127.0.0.1";intport = 55533;//与服务端建立连接Socket socket =newSocket(host, port);//建立连接...
首先,Socket类实现了java.io.Closeable的接口 public class Socket implements java.io.Closeable { } 1. 2. 3. 下面定义了一些Socket的一些状态 private boolean created = false; private boolean bound = false; private boolean connected = false; private boolean closed = false; private Object closeLock =...
if the socket is already connected or an error occurs while connecting. Remarks Connects this socket to the server. Added in 1.4. Java documentation for java.net.Socket.connect(java.net.SocketAddress). Portions of this page are modifications based on work created and shared by the Android Open...
Connected to the targetVM,address:'127.0.0.1:62724',transport:'socket'[main]INFOMonitoredThreadPoolExecutor-线程池名称=被监控的线程池1,提交任务数+1[ThreadPoolMonitor_0]INFOPoolMonitorTask-线程池名称=被监控的线程池1,活跃线程数峰值=0,队列任务数峰值=0,核心线程数=2,最大线程数=2,执行的任务总数=...
我使用的是,它允许我连接到MQTT代理。并且抛出超时异常: atjava.net.Socket.connect(Socket.java:1055) at com.ibm.mqtt.j2se.MqttJava14NetSocket 浏览1提问于2011-03-08得票数 4 2回答 无法访问WSO2 iot-3.0.0中的WSO2 IoTS设备管理控制台 、
Returns an output stream for this socket. int getPort() Returns the remote port number to which this socket is connected. int getReceiveBufferSize() Gets the value of the SO_RCVBUF option for this Socket, that is the buffer size used by the platform for input on this Socket. SocketAd...
Socket用法详解 在C/S通信模式中,client需要主动创建于server连接的Socket(套接字).服务器端收到了客户端的连接请求,也会创建与客户连接的Socket.Socket可看做是通信两端的收发器.server与client都通过Socket来收发数据. 1.构造Socket 1.Socket() 2.Socket(InetAddress address,int port) throws UnknownHostException,...