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Thanks, I went back through your tutorials and found the non-blocking code. I now have another problem.

Whenever I set the port to be non-blocking, the connect fails. Have you ever experienced that before?



Scott Klement wrote:
The recv() API doesn't have a timeout capability. Don't let this stop you, however. There are (at least) two ways to time out a socket.

a) you can call the select() API to see if there's data to receive. Select can wait until there's data to receive, or until a timeout occurs. If you call it before calling recv() each time you can write your code so that it only calls recv() if there's data to receive -- if a timeout occurs, you don't call recv(), you just say "time out!"

b) You can use the alarm() API to have the system send you a signal after a specified number of seconds. If your program receives a signal, it will abort a socket API. The recv() API will return -1 and set errno to EINTR (which means "interrupted by signal")

If you always tell it to send you a signal before calling recv(), this will result in a timeout.

I've described both of these techniques, and even provided sample code, on this list in the past. Please search the archives.

---
Scott Klement http://www.scottklement.com

On Tue, 8 Aug 2006, Robert Upshall wrote:

Can anybody tell me if it is possible to set the timeout value on a
socket receive?


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