File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Sockets and Internet Protocols and the fly likes Getting Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of REST with Spring (video course) this week in the Spring forum!
JavaRanch » Java Forums » Java » Sockets and Internet Protocols
Bookmark "Getting "" after sending a file through socket" Watch "Getting "" after sending a file through socket" New topic

Getting "" after sending a file through socket

Wojtek Eb

Joined: Oct 30, 2011
Posts: 1

I'm trying to implement basic communication through sockets, what I have now is:
- server start's to listen on socket,

- client connects, and server starts separate thread to operate with that client,
- both open Object output and input streams,

- client sends two i Doubles, String and Long over that stream (flushes after each one),

- server succesfully receives those objects over previously opened streams,

and now "the hard part",
- clients wants to send a file so opens different output stream (not object output stream) and sends the file,

- the server receives the file (also uses simple input stream instead ObjectInputStream),

- so far everything works fine, file is received, but now server performs some time consuming processing on that file after which sends response with whe results to client,

- the client is supposed to receive the result what finishes the whole communication,

Unfortunately, that last step on client side fails with exception:

I want client to block on waiting for server response after sending the file, but it suddenly finishes with the exception after sending the file. I am pretty sure that I do something wrong with switching between simple streams and Object streams.

Does anybody know what should I change to haave it working?

Thank you in advance!
I agree. Here's the link:
subject: Getting "" after sending a file through socket
It's not a secret anymore!