socket operation on non socket

This is a blog post from Php100, after looking at the socket programming a little bit of understanding, hereby record:Original Address "http://www.php100.com/html/webkaifa/PHP/PHP/2008/1218/970.html"Let's start with a simple example---a TCP service that receives the input string, processes and returns the string to the client. The following is the corresponding code:PHP Code://Set some basic variables$host = "192.168.1.99";$port =1234;//Set timeout ti

(); }} Packagecom. Pong.tcpip;ImportJava.io.BufferedReader;ImportJava.io.DataOutputStream;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;ImportJava.io.OutputStream;ImportJava.net.ServerSocket;ImportJava.net.Socket; Public classServicerImplementsRunnable {socket socket; PublicServicer (socket

: Package chat.chat; Import Java.io.DataInputStream; Import java.io.EOFException; Import java.io.IOException; Import java.net.BindException; Import Java.net.ServerSocket; Import Java.net.Socket; /** * Java uses socket and AWT components to simply implement the online chat function server can implement a client-side connection and continuously send messages to the server * but not multiple clients are connected at the same time, because i

):Tn.write (command[i]+ ' \ r \ n ')Res=tn.read_until (">")Winres=res.decode (' Utf-8 '). Encode (' Utf-8 ') # ' \xe5\xb7\xb2\xe5\xae\x8c\xe6\x88\x90 'Print WinresSuccon= ' Backup written 'If Succon in Winres: #9print ' Success 'Tn.write (' exit\r\n ')Tn.close ()Elseprint ' fail 'Tn.write (' exit\r\n ')Tn.close ()Sys.exit (1)Def get_workbook ():Logpre=time.strfti

peer name# Include # Include # Include # Include # Include # Include # Include # Include # Define sure do {If (errno! = 0) {fprintf (stderr, "line % d: % s/n" ,__ line _, strerror (errno); exit (1 );}} while (0)Int main (INT argc, char * argv []){Int S;Int C;// Int on = 1;Struct sockaddr_in ADDR;Int Len = sizeof (ADDR );Memset ( (ADDR), 0, Len );S = socket (af_inet, sock_stream, 0 );Sure;ADDR. sin_family =

the application layer, you do not have to understand the principle, but it is better to know it. Php APIs for socket are available on the Internet. And then use it. 2. socket server. php View copy print? // Create a server socket $ Tcp = getprotobyname ("tcp "); $ Socket = socket_create (AF_INET, SOCK_STREAM,

"data received so far." Check for End-of-file tag. If It is not there, read More data. Content = Encoding.ASCII.GetString ( State.buffer,0,bytesread); if (content). Lengthgt;0 amp;amp; content. EndsWith ("{ All of the data has been read from the Client. Display it on the console. Console.WriteLine ("Receive {0} bytes data from the client.") \ n Data: {1} ", Content. Length, content); Echo the data back to the client. Send (Handler, "-Data confirmat

is a generic socket programming diagram .Establishment of the server:Gets the native name used to parse the IP address of the machine, then the IP address is successfully bound, then the server is listening, waiting for the client to connect. That is, the next step is the TCP/IP three handshake operation, the operation succeeds the server and the client can communicate. Here is the comment code:1 voidSocketconnect ()2 {3 Charserver_name[ -];4 wsad

); Exit (1); }} if (Optind! = argc-1) {perror ("usage:ping [-v] Data processing functions#include "ping.h" void Readloop () {int Size;char Recvbuf[bufsize];char controlbuf[bufsize];struct msghdr msg;struct Iovec iov;ssize_t n;struct timeval tval;/* Create an ICMP original socket, must be root permission */if ((SOCKFD = socket (pr->sasend->sa_family,

;char msg[256];int addr_len;if((mysock=socket(AF_INET,SOCK_DGRAM,0)){perror("error");exit(1);}else{printf("socket created.\n");printf("socket ID: %d\n",mysock);}addr_len=sizeof(struct sockaddr_in);bzero(addr,sizeof(addr));addr.sin_family=AF_INET;addr.sin_port=htons(lport);ad

{serversocket S = new serversocket (localhostport); system. out. println ("server ------ listening ..... "); While (true) {Socket socket = s. Accept (); system. out. println ("connected socket:" + socket); getmessage = new getmessage (socket); thread = new thread (getmessag

(savedInstanceState);setContentView(R.layout.main);mButton = (Button) findViewById(R.id.Button01);mTextView = (TextView) findViewById(R.id.TextView01);mEditText = (EditText) findViewById(R.id.EditText01);mButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) { // TODO Auto-generated method stubSocket socket = null;String message = mEditText.getText().toString() + "\r\n";try {

, content $ buf \ n"; # actually get $ bs bytes Close SOCK; Execution result:Perl tcp_socket_cli.pl localhost 25Received 41 bytes, content 220 ESMTP Postfix-ExtMail 0.12-hzqbbc TCP server Socket module, forking/accept ModelIntroduction: a multi-process TCP server implements the daytime function in the sample. Copy codeThe Code is as follows :#! /Usr/bin/perl-w # Tcp_socket_dt_srv.pl Use strict; Use

functionality, only function recv can be used for connection-oriented sockets, and function //recvfrom does not have this restriction, which can be used to receive data //parameters from connectionless sockets buf point to receive buffers // Parameter len Specifies the size of the buffer //parameter flags is the control option, the meaning is consistent with recv //If the parameter from is Non-null, and the socket is not connection-oriented, then the

MEM (memory, is a function provided by ansic.Functions starting with B include:(1) void bzero (void * s, INTN): sets the first n Bytes of the memory specified by parameter S to 0, which is usually used to clear the socket address 0.(2) void bcopy (const void * SRC, void * DEST, INTN): copy the specified number of bytes from the memory area specified by the SRC parameter to the memory area specified by the

PHP Basic socket-based communication 1, prefaceA socket is an intermediate software abstraction layer that the application layer communicates with the TCP/IP protocol family, which is a set of interfaces. In design mode, the socket is actually a façade mode, it is the complex TCP/IP protocol family hidden behind the socket