UNIX for Advanced & Expert Users

The "write failed: Broken pipe" message is reported by the file sending PC which run my writed network device driver while 500MB or 900MB is sended!

What does the message mean? Does this mean there is a bug in my driver?


li,kunlun

As a guess: yes. It means something closed one of the TCP sockets before the send operation was complete.

As your guess, Is the "close" operation on the same PC sending file or on the other PC which recieves the sended file?

If there's two-way communication happening, it could be either. Is one end doing all the writing? Which one died?

Hi:

One file sending PC, one file recieving PC, connected by ether net which is used for test. The sending PC use "scp" command to send the data file to the recieving PC and no other sending or recieving occured concurrently. After it send 500MB or 960MB, the error occured on the sending machine : "write failed: Broken pipe"!

li,kunlun

---------- Post updated at 10:02 PM ---------- Previous update was at 09:50 PM ----------

By the way, my writed net device driver is running on the sending PC only!

It doesn't necessarily mean a bad device driver. It could also mean a glitch in the network. But if your two servers are connected by loopback that seems unlikely.

Did you try the verbose mode (scp -v)?
You could also try sending the file using netcat (nc), with verbose mode, on some different port, to see if it goes through, or gives some hint:
On the receiving machine:

Code:

nc -v -l 12345 > recvd.file #will listen on port 12345

Then on sending machine:

Code:

 nc -v <hostIP> 12345  < fileToSend

Although the syntax depends on your version of OS and nc.