[
Original link], the author:
Tashanzhishi
Recently, a project should use some point to transfer, and you will find the information written by the data. Finally, finally completed, in order to let others walk less, I decided to contribute the most important part of the program, I hope to help everyone. .
The procedures are divided into three parts, including the sending part, accept the part and a communication base class shared, this base class is the crystallization of the heart :)
I. Communication base class
Using system;
Using system.net.sockets;
Using system.net;
Using system.io;
Using system.windows.forms;
Using system.text;
Namespace Baseclass
{
///
/// The format of transmitting information is the command portion of the given length a given length of the command notes part variable length length information variable length information section
///
Public Class Communclass
{
Public CommunClass ()
{
//
// TODO: Add constructor logic here
//
}
///
/// Command part of the length
///
Private static readonly int cmdlen = 50;
///
/ / / Command the length of the part
///
Private static readonly int desclen = 100;
///
The number of bytes occupying the length of the variable length
///
Private static readonly int Dynamicles;
///
// / The length of the variable information portion is processed each time
///
Private static readonly int devaten = 1024;
///
/// / answer maximum length
///
Private static readonly int responlen = 20;
///
/// The character used to fill the command or notes the length of the length of the length.
///
Private static readonly char fillchar = '^';
///
// / Successfully send a part of the callback method (or if it is also a triggered event, but strictly said yet)
///
Public Delegate Void Onsend (int itotal, int tenting);
///
// Establish a connection according to a given server and port number
///
/// server name
/// port number
///
Public Static Socket ConnectTOServer (String strHost, int port)
{
Try
{
Ipaddress ipaddress = dns.resolve (strhost) .addresslist [0]; IpendPoint Ippoint = New IpendPoint (iPaddress, iPort);
Socket S = New Socket (AddressFamily.internetwork, sockettype.stream, protocoltype.tcp);
S.Connect (IPPoint);
Return S;
}
Catch (Exception E)
{
Throw (New Exception " E.Message)); E.MESSAGE));
}
}
///
/// Write text into the socket
///
/// Socket to send information
/// Information to send
///
Public Static Bool WriteTextTosocket (Socket S, String Strinfo)
{
BYTE [] buf = encoding.utf8.getbytes (STRINFO);
Try
{
S.send (buf, 0, buf.length); socketflags.none;
Return True;
}
Catch (Exception Err)
{
Messagebox.show ("Send text failed!" Err.Message);
Return False;
}
}
///
/// Write the command text into the socket
///
/// Socket to send command text
/// command text to send
///
Public Static Bool WriteCommandtosocket (Socket S, String Strcmd)
{
IF (strcmd == "")
STRCMD = "NOP";
Strcmd = strcmd.padright (cmdlen, fillchar);
Return WriteTextTosocket (S, STRCMD);
}
///
/// Write command notes into socket
///
/// Socket to send a command comment
/// The command notes you want to send
///
Public Static Bool WriteCommandDesctOSocket (Socket S, String Strdesc)
{
IF (strDesc == "")
STRDESC = "0";
STRDESC = STRDESC.PADRIGHT (DESCLEN, FILLCHAR); RETURN WRITETEXTOSOCKET (S, STRDESC);
}
///
/// Send the number of bytes of variable information
///
/// Socket to send bytes
/// bytes Number
///
Public Static Bool WriteDynamiclentosocket (Socket S, INT Ilen)
{
String strlen = Ilen.toT7tring (). Padright (Dynamicles); Fillchar
Return WriteTextTosocket (S, Strlen);
}
///
/// Send the cached specified section to socket
///
/// Socket to send cached
/// The cache to send
/// To send cache start position
/// Number of bytes to send cache
/// The byte of each sending
/// The callback function after successful call is sent
///
Public Static Bool Writebuftosocket (Socket S, Byte [] BUF, Istart, Int Icount, Int Iblock, Onsend SendSuccess
{
INT ISENDED = 0;
INT ISENDING = 0;
While (Isended { IF (isended iblock <= iCount) isending = iblock; Else isending = iCount - isended; S.send (buf, iStart isended, isending, socketflags.none); isended = isending; IF (readResponsefromsocket (s) == "ok") IF (SendSuccess! = null) Sendsuccess (iCount, Isended); Else Return False; } Return True; } /// /// Send the length of not fixed text to Socket /// /// Socket to send text /// Text to send /// Successfully send a part of the callback function after text /// Get the callback function of the text length /// Public Static Bool WriteDynamicTextTosocket (Socket S, String Strtext, Onsend onsendtext) { BYTE [] buf = encoding.utf8.getbytes (strText); Ilen = BUF.LENGTH; Try { WriteDynamiclentosocket (S, ILEN); Return Writebuftosocket (S, BUF, 0, Ilen, DEALLEN, ONSENDTEXT); } Catch (Exception Err) { Messagebox.show ("Send text failed!" Err.Message); Return False; } } /// /// Write the file to the socket /// /// Socket to send files /// File to send /// Public Static Bool Writefiletosocket (Socket S, String Strfile, Onsend onsendfile { FILESTREAM FS = New FileStream (Strfile, FileMode.Open, FileAccess.Read, Fileshare.Read); INT Ilen = (int) fs.lend WriteDynamiclentosocket (S, ILEN); BYTE [] BUF = New byte [Ilen]; Try { fs.read (buf, 0, ilen); Return Writebuftosocket (S, BUF, 0, Ilen, DEALLEN, ONSENDFILE); } Catch (Exception Err) { Messagebox.show ("Send File Failed!" Err.Message); Return False; } Finally { fs.close (); } } /// /// The other party's simple response to yourself /// /// /// Public Static String ReadResponsionFromSocket (Socket S) { Byte [] bufcmd = new byte [responlen]; Int iCount = S.Receive (BUFCMD); String strrespon = encoding.utf8.getstring (bufcmd, 0, iCount); Return Strress } /// /// Read commands from Socket /// /// Socket to read the command /// Public Static String Readcommandfromsocket (Socket S) { Byte [] bufcmd = new byte [cmdlen]; Int iCount = S.Receive (bufcmd, 0, cmdlen, socketflags.partial); String strcommand = encoding.utf8.getstring (bufcmd, 0, cmdlen); Return strcommand = strcommand.trimend (fillchar); } /// /// read command notes /// /// Socket to read the command annotation /// Public Static String ReadcommandDescfromsocket (Socket S) { BYTE [] bufcmd = new byte [desclen]; Int iCount = S.Receive (bufcmd, 0, desclen, socketflags.partial); String strcommand = encoding.utf8.getstring (bufcmd, 0, desclen); Return strcommand = strcommand.trimend (fillchar); } /// /// Read the length of the variable portion /// /// Socket to read variable part length /// Public Static Int ReadDynamiclenfromsocket (Socket S) { BYTE [] bufcmd = new byte [Dynamicles]; Int iCount = S.Receive (bufcmd, 0, dynamiclengthlen, socketflags.partial); String strcommand = encoding.utf8.getstring (bufcmd, 0, dynamiclengthlen); Return Int.Parse (STRCOMMAND.TRIMEND (Fillchar)); } /// /// Read variable information in text form /// /// Socket to read variable information /// Public Static String ReadDynamicTextFromsocket (Socket S) { INT Ilen = ReadDynamicles; FromSocket (s); Byte [] buf = new byte [Ilen]; String strinfo = ""; INT IRECEIVEDED = 0; IRECEIVEING = 0; While (IreceiveDed { IReceiveded DEALLEN <= Ilen) Ireceiveing = DEALLEN Else IRECEIVEING = Ilen - IreceiveDed; S.Receive (buf, Ireceived, Ireceiveing, SocketFlags.none); Communclass.writetexttosocket (S, "OK"); IreceiveDed = IRECEIVEING; } Strinfo = encoding.utf8.getstring (buf, 0, ilen); Return Strinfo; } /// /// read variable information in the form of file /// /// Socket to read variable information /// After reading the file save location /// Public Static Bool ReadDynamicFileFromSocket (socket s, string strfile) { INT Ilen = ReadDynamicles; FromSocket (s); BYTE [] BUF = New byte [Ilen]; FILESTREAM FS = New FileStream (Strfile, FileMode.create, FileAccess.write); Try { INT IRECEIVEDED = 0; IRECEIVEING = 0; While (IreceiveDed { IReceiveded DEALLEN <= Ilen) Ireceiveing = DEALLEN Else IRECEIVEING = Ilen - IreceiveDed; S.Receive (buf, Ireceived, Ireceiveing, SocketFlags.none); Communclass.writetexttosocket (S, "OK"); IreceiveDed = IRECEIVEING; } fs.write (buf, 0, ilen); Return True; } Catch (Exception Err) { Messagebox.show ("Receive File Failed" Err.Message); Return False; } Finally { fs.close (); } } } // End Class } // end namespace The above is the newsletter class, with this class, and then send acceptance is not a plate for a dish?
