Add support for host_port_subcomponent

[bdraco]

Adds a new property host_port_subcomponent with the goal of replacing

• the implementation in https://github.com/aio-libs/aiohttp/blob/e7d1d6a488d89520f2f897d11004ad168884fe5f/aiohttp/client_reqrep.py#L365
• a few other places that could use it downstream in Home Assistant and other libs

[codspeed-hq]

CodSpeed Performance Report

Merging #1375 will not alter performance

_{Comparing host_port_subcompoment (eed5981) with master (081f1ba)}

Summary

✅ 83 untouched benchmarks

🆕 1 new benchmarks

Benchmarks breakdown

	Benchmark	master	host_port_subcompoment	Change
🆕	test_url_host_port_subcomponent	N/A	464.7 µs	N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.05%. Comparing base (5143823) to head (eed5981).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1375      +/-   ##
==========================================
+ Coverage   96.02%   96.05%   +0.02%     
==========================================
  Files          31       31              
  Lines        5713     5748      +35     
  Branches      356      360       +4     
==========================================
+ Hits         5486     5521      +35     
  Misses        201      201              
  Partials       26       26              

Flag	Coverage Δ
CI-GHA	96.05% <100.00%> (+0.02%)	⬆️
MyPy	45.97% <80.00%> (+0.21%)	⬆️
OS-Linux	99.55% <100.00%> (+<0.01%)	⬆️
OS-Windows	99.61% <100.00%> (+<0.01%)	⬆️
OS-macOS	99.29% <100.00%> (+<0.01%)	⬆️
Py-3.10.11	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.10.15	99.51% <100.00%> (+<0.01%)	⬆️
Py-3.11.10	99.51% <100.00%> (+<0.01%)	⬆️
Py-3.11.9	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.12.7	99.51% <100.00%> (+<0.01%)	⬆️
Py-3.13.0	99.51% <100.00%> (+<0.01%)	⬆️
Py-3.9.13	99.23% <100.00%> (+<0.01%)	⬆️
Py-3.9.20	99.46% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.16	99.52% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.17	99.55% <100.00%> (+<0.01%)	⬆️
VM-macos-latest	99.29% <100.00%> (+<0.01%)	⬆️
VM-ubuntu-latest	99.55% <100.00%> (+<0.01%)	⬆️
VM-windows-latest	99.61% <100.00%> (+<0.01%)	⬆️
pytest	99.55% <100.00%> (+<0.01%)	⬆️

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[bdraco]

Need to modify aiohttp to use this and run tests against it

[bdraco]

all tests pass downstream with this change

diff --git a/aiohttp/client_reqrep.py b/aiohttp/client_reqrep.py
index 57df4b016..ca40c19e5 100644
--- a/aiohttp/client_reqrep.py
+++ b/aiohttp/client_reqrep.py
@@ -433,30 +433,10 @@ class ClientRequest:
         self.headers: CIMultiDict[str] = CIMultiDict()
 
         # Build the host header
-        host = self.url.host_subcomponent
-
+        host = self.url.host_port_subcomponent
         # host_subcomponent is None when the URL is a relative URL.
         # but we know we do not have a relative URL here.
         assert host is not None
-
-        if host[-1] == ".":
-            # Remove all trailing dots from the netloc as while
-            # they are valid FQDNs in DNS, TLS validation fails.
-            # See https://github.com/aio-libs/aiohttp/issues/3636.
-            # To avoid string manipulation we only call rstrip if
-            # the last character is a dot.
-            host = host.rstrip(".")
-
-        # If explicit port is not None, it means that the port was
-        # explicitly specified in the URL. In this case we check
-        # if its not the default port for the scheme and add it to
-        # the host header. We check explicit_port first because
-        # yarl caches explicit_port and its likely to already be
-        # in the cache and non-default port URLs are far less common.
-        explicit_port = self.url.explicit_port
-        if explicit_port is not None and not self.url.is_default_port():
-            host = f"{host}:{explicit_port}"
-
         self.headers[hdrs.HOST] = host
 
         if not headers:

[bdraco]

Turns out to be super nice on performance since it ends up in the cache and subsequent calls to the same url again doesn't have to recalculated it again if it hits the LRU which turns out to be often