3a2807ad95
76e0e6087d0310ec31f43d751de60adf0c0a2faa qa: Account for errno not always being set for ConnectionResetError (Hodlinator)
Pull request description:
The lack of errno can cause unclear and long log output.
Issue can be triggered by:
```diff
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -263,6 +263,7 @@ std::string RequestMethodString(HTTPRequest::RequestMethod m)
/** HTTP request callback */
static void http_request_cb(struct evhttp_request* req, void* arg)
{
+ throw std::runtime_error{"Hello"};
evhttp_connection* conn{evhttp_request_get_connection(req)};
// Track active requests
{
```
and running a functional test such as *test/functional/feature_abortnode.py*.
`http.client.RemoteDisconnected` not specifying `errno` to `ConnectionResetError`-ctor: ce4b0ede16/Lib/http/client.py (L1556C9-L1556C29)
<details><summary>Before/after log examples</summary>
#### Log before
```
2025-11-14T20:53:05.272804Z TestFramework (ERROR): Unexpected exception
Traceback (most recent call last):
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 138, in main
self.setup()
~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 268, in setup
self.setup_network()
~~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/./build/test/functional/feature_abortnode.py", line 21, in setup_network
self.setup_nodes()
~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 381, in setup_nodes
self.start_nodes()
~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 527, in start_nodes
node.wait_for_rpc_connection()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_node.py", line 326, in wait_for_rpc_connection
rpc.getblockcount()
~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/coverage.py", line 50, in __call__
return_val = self.auth_service_proxy_instance.__call__(*args, **kwargs)
File "/home/hodlinator/bc/3/test/functional/test_framework/authproxy.py", line 137, in __call__
response, status = self._request('POST', self.__url.path, postdata.encode('utf-8'))
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/hodlinator/bc/3/test/functional/test_framework/authproxy.py", line 111, in _request
return self._get_response()
~~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/authproxy.py", line 174, in _get_response
http_response = self.__conn.getresponse()
File "/nix/store/62fdlzq1x1ak2lsxp4ij7ip5k9nia3hc-python3-3.13.7/lib/python3.13/http/client.py", line 1430, in getresponse
response.begin()
~~~~~~~~~~~~~~^^
File "/nix/store/62fdlzq1x1ak2lsxp4ij7ip5k9nia3hc-python3-3.13.7/lib/python3.13/http/client.py", line 331, in begin
version, status, reason = self._read_status()
~~~~~~~~~~~~~~~~~^^
File "/nix/store/62fdlzq1x1ak2lsxp4ij7ip5k9nia3hc-python3-3.13.7/lib/python3.13/http/client.py", line 300, in _read_status
raise RemoteDisconnected("Remote end closed connection without"
" response")
http.client.RemoteDisconnected: Remote end closed connection without response
```
#### Log after
```
2025-11-14T20:48:10.552126Z TestFramework (ERROR): Unexpected exception
Traceback (most recent call last):
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 138, in main
self.setup()
~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 268, in setup
self.setup_network()
~~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/./build/test/functional/feature_abortnode.py", line 21, in setup_network
self.setup_nodes()
~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 381, in setup_nodes
self.start_nodes()
~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_framework.py", line 527, in start_nodes
node.wait_for_rpc_connection()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/hodlinator/bc/3/test/functional/test_framework/test_node.py", line 316, in wait_for_rpc_connection
raise FailedToStartError(self._node_msg(
f'bitcoind exited with status {self.process.returncode} during initialization. {str_error}'))
test_framework.test_node.FailedToStartError: [node 0] bitcoind exited with status -6 during initialization. terminate called after throwing an instance of 'std::runtime_error'
what(): Hello
************************
```
Note how even the C++ exception message is now included.
</details>
ACKs for top commit:
maflcko:
review ACK 76e0e6087d0310ec31f43d751de60adf0c0a2faa 🌬
furszy:
Tested ACK 76e0e6087d0310ec31f43d751de60adf0c0a2faa
l0rinc:
untested code review ACK 76e0e6087d0310ec31f43d751de60adf0c0a2faa
Tree-SHA512: 55a83d664624932b919ab2a5b6369121db448d27628029f21c5df297892dd56d179d710ad744f6407b51aa576fb6905a38bbc29885c534ec20704c22717a0880
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