Strives for the realization of the function of the most simple, udp and TCP is ok, I made a LAN chat software, implementation as long as the message sending files into the box can be sent to a single user, the Internet looking for half a day just didn't find the right class, if the great spirit are too lazy to solve the trouble, please tell me which method should be used in a class which? To check on my own

CodePudding user response:

Like 'chat' implementation, there is no essential difference in text, and sending files,

CodePudding user response:

Then how do you put the files into the bytecode send somebody else in the past, and then the somebody else the bytecode parsed into file

CodePudding user response:

Just practice these days, like writing and chat rooms, with a socket can finish, but there are a few attention point
1, in the process of transmission byte [] can not be converted to string
2, write file can use FileStream
3, send the file to send the file name and file length in the past, to facilitate receiving
4, in order to distinguish between information and files can be sent in front of the flow of information to add custom rules
Read the Code file

 OpenFileDialog OpenFile; 
DialogResult m_drTansferFile=new DialogResult (); 
OpenFile=new OpenFileDialog (); 
OpenFile. Title="Selct a File to Transfer"; 
M_drTansferFile=OpenFile. ShowDialog (); 
If (m_drTansferFile!=DialogResult. OK) {
MessageBox. Show (" Transfer is Cancelled "); 
return null; 
}
String szFullPath=OpenFile. FileName; 
Return szFullPath; 

Accept the file Code

 byte [] buffer=new byte [128]; 

M_WorkSocket. The Receive (buffer); 
String szText=Encoding. UTF8. Get string (buffer); 
SzText=szText. Trim (' \ 0 '); 
String [] szMessage=szText. Split ("); 
Int nLength=int. Parse (szMessage [1]). 
String szFileName=szMessage [0]; 

//define the receiving data cache 
Byte [] FileMessage=new byte [nLength]; 
Int nSum=0; 

//for the first time receiving the actual data flag 
Int nFlag=m_WorkSocket. The Receive (FileMessage, 0, FileMessage. Length, SocketFlags. None). 

//if there is no received fixed data, loop to receive 
While (nFlag!=FileMessage. Length) {
NSum +=1; 
NFlag +=m_WorkSocket. The Receive (FileMessage nFlag, FileMessage. Length - nFlag SocketFlags. None). 
Console. WriteLine (" receiving number: "+ nSum. ToString ()); 
}

Console. WriteLine (" jump out of the loop "); 
String szFullName=string Concat (@ 1 a c # project "E: \ \ ", szFileName); 
FileStream fs=new FileStream (szFullName, FileMode. Create); 

Fs. Write (FileMessage, 0, FileMessage. Length); 

Fs. Flush (); 

Console. WriteLine (fs. The Position); 
Console. WriteLine (" OK ");