networkstream

establishconnection () function uses a tcpclient to connect to the server, and creates a networkstream to send messages. In addition, the port number is the same as that on the server, both of which are 5555. The establishconnection () function is as follows: Private void establishconnection (){Statusbar1.text = "connecting to server ";Try{Clientsocket = new tcpclient (serveraddress, SERVERPORT );NS = clientsocket. getstream ();Sr = new streamrea

. At the same time, the socketasynceventargs type only has the remoteendpoint attribute, but does not have the localendpoint attribute. So helpless. However, the good news is that socket operations can be improved in Windows Phone 8 and Windows 8. Update: I wrote another article about Windows Phone 7 socket: Run the networkstream type in Windows Phone 7. Another point was found: socket. connectasync seems to always succeed, even if the corresponding

establishconnection () function uses a tcpclient to connect to the server, and creates a networkstream to send messages. In addition, the port number is the same as that on the server, both of which are 5555. The establishconnection () function is as follows:Private void establishconnection (){Statusbar1.text = "connecting to server ";Try{Clientsocket = new tcpclient (serveraddress, SERVERPORT );NS = clientsocket. getstream ();Sr = new streamreader (

Declaration of originalityThis article small bamboo zz This address http://blog.csdn.net/zhujunxxxxx/article/details/44258719 reprint please indicate the sourceThis article describes the. Net, the System.Net.Sockets namespace provides a managed implementation of the Windows Sockets (Winsock) interface for developers who need tight control over network access. All other network access classes in the System.Net namespace are built on the socket socket implementation, such as the TcpClient, TcpList

checkemail (string mailaddress){ RegEx Reg = new RegEx ("^ [a-zA-Z0-9 _-] + @ ([a-zA-Z0-9-] + //.) {1 ,}( com | net | Edu | Miz | biz | CN | CC) $ "); If (! Reg. ismatch (mailaddress) return 405; // the email address format is incorrect. String MailServer = getmailserver (mailaddress );If (MailServer = NULL){Return 404; // email server Detection Error}Tcpclient TCPC = new tcpclient ();TCPC. nodelay = true;TCPC. receivetimeout = 3000;TCPC. sendtimeout = 3000;Try {TCPC. Connect (MailServer, 25 );

= value ;}} Public Socket Sock{Get {return sock ;}Set {sock = value ;}}}} /***************************** ChatClient ********* ***************************/ Using System;Using System. Drawing;Using System. Collections;Using System. ComponentModel;Using System. Windows. Forms;Using System. Data; Using System. IO;Using System. Net;Using System. Net. Sockets;Using System. Threading; Namespace Chat_Client{////// Summary of Form1.///Public class Form1: System. Windows. Forms. Form{Private System. Wind

Paste the main code: Private void ReceiveData (object cUserData){User cUser = (User) cUserData;// Disconnection flagBool closed = false;Byte [] flagbyte = new byte [1];While (! Closed){Try{// Check whether the data received by the course existsIf (cUser. client. Available> 0){Byte [] bytes = new byte [cUser. client. Available];CUser. netStream. Read (bytes, 0, bytes. Length );}// Check whether the connection existsIf (cUser. client. Client. Poll (0, SelectMode. SelectRead ))Closed = int. Equals

WebResponse represent the request/response layer. Classes supporting Http, Tcp, and Udp constitute the application protocol layer, while the Socket class is in the transmission layer. It can be illustrated as follows: It can be seen that the transport layer is at the bottom of this structure. When the application protocol layer and request/response layer above it cannot meet the special needs of the application, you need to use this layer for Socket programming. In. Net, the System. Net. Socket

(); throw exception;} else {// similarly throw the error thread. abort (); string message = string. format ("tcpclient connection to {0 }:{ 1} timed out", _ hostname, _ port); throw new timeoutexception (Message) ;}} protected void beginconnect () {try {connection = new tcpclient (_ hostname, _ port); // mark successful, return connected = true;} catch (exception ex) {// Mark failed exception = ex ;}}} The following example shows how to connect a website to send 10 bytes of data and receive 10

(E. Message );Console. writeline (E. stacktrace );}Finally{Try{Client. Close ();Listener. Stop ();}Catch{// Error}Console. writeline ("server exiting ...");}} Private Static rsaparameters getclientpublickey (tcpclient client){// Obtain the serialized public key from the byte stream, and convert it to the instance of the writing class through a stringByte [] buffer = new byte [rsa_key_size_bytes];Networkstream NS = client. getstream ();Memorystream

message display box (the RichTextBox Control is the message display box ). The catch part of the function is used to catch exceptions. For example, if a firewall is set between users, users cannot communicate with each other, or the other party has stopped listening, of course, you cannot send messages to it. Another function, send (), implements the program's message sending function. Function implementation: Private void send (){Try{String MSG = "Tcpclient TCPC = new tcpcli

element contains the IP address of the target computer, and the rest is the content to be sent. In the try block, a tcpclient object is created on port 5656 Based on the IP address of the remote computer. Then, we create a networkstream and a stremwriter object to send our information. In the Catch Block, we use it to capture general exceptions, such as remote computers rejecting connection requests or network failures. 3. inputhandler class: The

those of the read method. The beginread method actually adds the operation request to the queue of the window Device Driver, while the Windows Device driver knows how to communicate with the correct hardware device. In this way, the hardware takes over the operation and does not need any threads to execute any operation or even wait for the output result. This method is quite efficient. Other types of I/O operations are similar to file I/O operations. For example, when

writing is completed. State Type: system. Object An object provided by a user that distinguishes the specified asynchronous write request from other requests. Return Value Type: system. iasyncresultIasyncresult of asynchronous write (may still be suspended ).The default Implementation of beginwrite in the stream will synchronously call the write method, which means that write may be blocked in some streams. HoweverFor some classes (such as fil

host. UseCloseMethod release andTcpclientAll associated resources.Example C # The following example creates TcpclientConnection. Static void connect (string server, string message) { Try { // Create a tcpclient. // Note, for this client to work you need to have a tcpserver // Connected to the same address as specified by the server, Port // Combination. Int32 Port = 13000; Tcpclient client = new tcpclient (server, Port ); // Translate the passed message into ASCII and store it as a byte array.

Stream definition in msdn: provides a general view of the byte sequence (provides a generic view of a sequence of bytes ). This explanation is too abstract and not easy to understand. It is easier to understand stream's literal meaning "River, water flow". stream is an abstract class, it defines some unified behaviors of things similar to "water flow", including whether the "water flow" can be pumped out (read stream content ); whether water can be injected into the "water flow" (content written

transmission layer. Webreqeust and webresponse represent the request/response layer. Classes supporting HTTP, TCP, and UDP constitute the application protocol layer, while the socket class is in the transmission layer. The transport layer is located at the bottom of this structure. When the application protocol layer and request/response layer above cannot meet the special needs of applications, you need to use this layer for Socket socket programming. In. net, the system. net. Sockets namespac

class) and provide extra functions. For example, bufferedstream reloads the read method to provide the function of reading data from a buffer, rather than directly reading data like other streams. As in the previous example, any composite modifier provides the same functionality as its base class, no matter how complicated it is. Note: The Inheritance subclass of system. Io. Stream in Net Framework: System. Io. StreamSystem. Data. oracleclient. oraclebfileSystem. Data. oracleclient. canclelob

), "connect to server") {This. client = new tcpclient (); this. client. connect ("127.0.0.1", Port); Data = new byte [this. client. receivebuffersize]; sendsocket (username); this. client. getstream (). beginread (data, 0, system. convert. toint32 (this. client. receivebuffersize), receivemessage, null) ;}; if (GUI. button (New rect (230,250, 80, 20), "send") {sendsocket (sendmsg); sendmsg = "" ;};} public void sendsocket (string message) {try {networkstream