tcp

问题 I've a TCP client which was built using spring integration TCP and the server supports a keep alive message (ping/pong style). The connections were configured using a CachingClientConnectionFactory and I'd like to take advantage on this server feature. Here's my bean configuration: private static final int SERIALIZER_HEADER_SIZE = 2; /** * Serializer used by connection factory to send and receive messages */ @Bean public ByteArrayLengthHeaderSerializer byteArrayLengthHeaderSerializer() {

问题 Is the Windows Firewall which accept outgoing traffic on port 80/TCP allow outgoing traffic also when we use UDP protocol. Does a Firewall in most cases control the port number only or controls the used Protocol also ? 回答1: TCP and UDP ports are entirely different from each other. So, TCP/80 has nothing to do with UDP/80, except for the number. From a firewall's perspective, they are entirely separate things with separate rules. 来源： https://stackoverflow.com/questions/9280136/does-the-server

问题 If ESTABLISHED socket (after connecting from client via connect() ), exits and thus kernel closes all open file descriptor, what happens to the other side? If the client sends FIN and the server ACK it (which is just half-closed state), but the server tries to read() on that socket, what happen then? I can imagine 2 situation: the socket server read() s on, is closed also. But in the server side there is no exit(), so noone has closed that socket at that side. So here I do not know how server

问题 I need to tunnel through a tcp proxy. Within Java, the proxy types are only socks, direct or HTTP. So in the example below a socket is being created then the proxy object is being created from the socketAddress and the type is socks. How can I specify the proxy is TCP? SocketAddress addr = new InetSocketAddress("socks.example.com", 1080); Proxy proxy = new Proxy(Proxy.Type.SOCKS, addr); Socket socket = new Socket(proxy); InetSocketAddress dest = new InetSocketAddress("server.example.org",

问题 I need to tunnel through a tcp proxy. Within Java, the proxy types are only socks, direct or HTTP. So in the example below a socket is being created then the proxy object is being created from the socketAddress and the type is socks. How can I specify the proxy is TCP? SocketAddress addr = new InetSocketAddress("socks.example.com", 1080); Proxy proxy = new Proxy(Proxy.Type.SOCKS, addr); Socket socket = new Socket(proxy); InetSocketAddress dest = new InetSocketAddress("server.example.org",

问题 I have tried this upwards and backwards without any success. The national domain registry department has decided to change their entire system to EPP. Their documentation is very poor but to summarize: Connection via TCP: epptest.ficora.fi port 700 To whitelist for firewall, add IP address and SSL certificate to user account on dashboard (done that) The dashboard is a total mess. I cannot upload the same certificate to different users, I can't remove users etc. Anyhow, you are supposed to

问题 In a connection to a server we get errors such as: <errorCode>101500</errorCode><errorMessage>Error in Sender</errorMessage> Is there a way to get more information on the cause, except from "Error in Sender"? Note: In the SSL transport sender I have set AllowAll for the HostnameVerifier <transportSender name="https" class="org.apache.synapse.transport.passthru.PassThroughHttpSSLSender"> <parameter name="non-blocking" locked="false">true</parameter> <parameter name="http.proxyHost" locked=

问题 What happens, in below scenarios, when a socket in TIME_WAIT receives a segment a) When it receives lost ACK b) When sending node wants to establish another new connection using same src_ip:src_port on the server to same dst_ip:dst_port for which the server already has a TIME_WAIT socket. Will it ignore/drop it, sends a reset or reuse the TIME_WAIT socket? Thanks M 回答1: a) When it receives lost ACK Nothing. b) When sending node wants to establish another new connection using same src_ip:src

问题 I have a simple client-server example using TCP socket on Linux. The server listens on the loopback address. The client connects to server and sends some integer plus an "END" string to mark the end of data. Server reads the numbers, add them all and returns the total sum. However, my server sometime blocks on read() even though the client has sent all the data successfully. Here's the code: server.c: #include <stdio.h> #include <errno.h> #include <string.h> #include <unistd.h> #include

问题 I have made a game where clients connect to a central server with TCP connection. In the first 6 bytes I send the version number "00.00.01" of the client protocol. Based on this version I want to route/proxy the tcp connection to different servers where different version of the game will be running. Basically client-1 with version 00.00.01 should connect to Server-1 And client 2 with version 00.00.02 should connect to Server-2 For load balancing I checked HAProxy lua support but couldn't find