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https://issues.apache.org/jira/browse/TS-4522?focusedWorklogId=26567&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-26567
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ASF GitHub Bot logged work on TS-4522:
--------------------------------------
Author: ASF GitHub Bot
Created on: 18/Aug/16 13:36
Start Date: 18/Aug/16 13:36
Worklog Time Spent: 10m
Work Description: Github user oknet commented on the issue:
https://github.com/apache/trafficserver/pull/701
agree with @jpeach 's comments and code suggestion. With minor modify that
only assert on ( r == 0 ) because of (r < 0) means error on write().
Issue Time Tracking
-------------------
Worklog Id: (was: 26567)
Time Spent: 0.5h (was: 20m)
> did not check EPIPE on write_to_net_io
> --------------------------------------
>
> Key: TS-4522
> URL: https://issues.apache.org/jira/browse/TS-4522
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, Network
> Reporter: Oknet Xu
> Assignee: Oknet Xu
> Fix For: 7.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> On a closed socket fd:
> read(socketfd) return 0
> write(socketfd) return EPIPE
> In the write_to_net_io, we check the return value of write() with the same
> way to read().
> {code}
> if (!r || r == -ECONNRESET) {
> {code}
> The bug makes no VC_EVENT_EOS callbacked while write_to_net_io, but
> VC_EVENT_ERROR instead.
> full code here:
> {code}
> int64_t r = vc->load_buffer_and_write(towrite, buf, total_written, needs);
> if (total_written > 0) {
> NET_SUM_DYN_STAT(net_write_bytes_stat, total_written);
> s->vio.ndone += total_written;
> }
> // check for errors
> if (r <= 0) { // if the socket was not ready,add to WaitList
> if (r == -EAGAIN || r == -ENOTCONN) {
> NET_INCREMENT_DYN_STAT(net_calls_to_write_nodata_stat);
> if ((needs & EVENTIO_WRITE) == EVENTIO_WRITE) {
> vc->write.triggered = 0;
> nh->write_ready_list.remove(vc);
> write_reschedule(nh, vc);
> }
> if ((needs & EVENTIO_READ) == EVENTIO_READ) {
> vc->read.triggered = 0;
> nh->read_ready_list.remove(vc);
> read_reschedule(nh, vc);
> }
> return;
> }
> if (!r || r == -ECONNRESET) {
> vc->write.triggered = 0;
> write_signal_done(VC_EVENT_EOS, nh, vc);
> return;
> }
> vc->write.triggered = 0;
> write_signal_error(nh, vc, (int)-total_written);
> return;
> {code}
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