listen port

Hot Topic

Cursor Position VB.NET
Conversion failed when converting datetime from character string.Hi Jeff I get this error for each variable
assign new user to role
COMException (ThrowExceptionForHR) => handle is invalid when calling Marshal.FreeHGlobal
about all workgroup withinn a network
How come deleting a file doesn't really work
Web Service client performance
Enabling a panel.
TCP Server Application
XmlSerializer and OnDeserializedAttribute

.NET Development

How to fire the javascript function in href attribute
Repeating name in namespace + classname, because I named dataset+db+namespace the same
Changes made to multiple tables
Help with the load balancer Problem
Communication between apps via sockets.
Ping with multiple network adapters
Serializer constructors in sgen generated assemblies ?
execute stored procedure on only selected rows
What's the difference between BCL and FCL??
Selecting / Update records - Concurrancy

listen port

hi

please help me.

I have a question about ports & sockets .

I am trying to write a program that cans listen to the port 80/8080 and deagnose pdf or zip files from other files(html,...). then recive this files from port .

I know how resice the file by c#.net but I do not know how deagnose files type .

thanks.




Answer this question

listen port

  • ChanKaiShi

    If you're reading the file over the TCP (i presume) port then you will have to read the first few bytes to determine the file type.

    That is pretty simple: for instance, the every PDF file starts with the byte stream: %PDF-<version number> where <version number is something like 1.3 or 1.5.

    Zip files start with the byte stream: PK

    Hope this helps.



  • listen port
Answer this question