[ws] Cannot send data to peer(-22) on K64F and QEMU

[qiaojingx]

Description

When running WebSocketServer.js and WebSocketServer4.js on K64F and qemu, data transmission is stuck and Error: Cannot send data to peer(-22) is printed after connect with node client for a short while. And, node client cannot connect with WebSocketServer again.

Test Code

WebSocketServer.js;
WebSocketServer4.js

Steps to Reproduction

1. make JS=samples/websockets/WebSocketServer.js BOARD=frdm_k64f
2. cp outdir/frdm_k64f/zephyr/zephyr.bin /media/<username>/MBED/
3. Connect with PC via Ethernet cable.
4. add router and address on Linux
   ip route add 2001:db8::/64 dev <ethX>
ip addr add 2001:db8::2 dev <ethX>
5. connect with node client:
   node samples/websockets/NodeWebSocketClient.js

Actual Result

data transmission is stuck and Error: Cannot send data to peer(-22) prints.

Connection cannot be setup again.

Expected Result

No error.

Test Builds

Branch	Commit Id	Target Device	Test Date	Result
master	616c13f	FRDM_K64F	Dec 18, 2017	Fail
master	616c13f	qemu	Dec 18, 2017	Fail
master	1b970c8	FRDM_K64F	Dec 11, 2017	Fail by #1670
master	1b970c8	qemu	Dec 11, 2017	Pass

Additional Information

[brianjjones]

#1770 may have fixed this issue. I couldn't reproduce it after dozens of re-connects. Please test again with master and see if it is still an issue. Thanks.

[grgustaf]

I added a count to the message output and it happens after a while - once after 500 messages, once after 1000 messages for me. So you have to leave it running for a couple minutes.

[cuiyanx]

@grgustaf I re-test this issue and get the same error again with d09e4b3 on master(K64f board).

Log:

PONG: PING
MESSAGE: Message #221
MESSAGE: Message #222
MESSAGE: Message #223
MESSAGE: Message #224
MESSAGE: Message #225
MESSAGE: Message #226
MESSAGE: Message #227
MESSAGE: Message #228
MESSAGE: Message #229

249:(ERROR) Cannot send data to peer (-22)
MESSAGE: Message #230

[qiaojingx]

Re-test with commit d09e4b3 in Qemu, got the same error as below:

[grgustaf]

@qiaojingx, one thing I realized not too long ago is that net-tools should be updated, where the loop-slip-tap.sh and loop-socat.sh scripts come from. Do you guys keep those up to date? I wonder if that could have anything to do with the difference we see.