rob05c opened a new pull request #7429:
URL: https://github.com/apache/trafficserver/pull/7429
Fixes a segfault when a parent connect fails.
HandleResponse is reading header variables that don't exist on connect fail.
This fixes it to not read them if the connect failed.
Later code doesn't need what this does if the connect fails, this would have
returned PARENT_RETRY_NONE anyway, since response_is_retryable returns false
when !is_response_valid.
It actually will retry, not in `case PARENT_RETRY:` but in the `default:
TxnDebug("http_trans", "[hrfp] connection not alive");` which calls
`find_server_and_update_current_info`.
So, I believe this makes the retry work as it should.
I manually tested, and saw a connect-failing parent retry thrice then try
the origin, as expected.
Also, this appears to maybe not happen in release builds. I couldn't
reproduce. But the segfault happens with debug builds, and looking at the code,
it's obvious why. I'm not sure how release builds don't segfault.
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