From 9b3fa1ec8f269762dea5026c202430a8b4a3078a Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 19 Sep 2024 23:26:22 +0000
Subject: [PATCH] fix(client): handle domains with underscores (#499)

---
 src/finch/_base_client.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/finch/_base_client.py b/src/finch/_base_client.py
index 1316a641..da0d2575 100644
--- a/src/finch/_base_client.py
+++ b/src/finch/_base_client.py
@@ -490,12 +490,17 @@ def _build_request(
             if not files:
                 files = cast(HttpxRequestFiles, ForceMultipartDict())
 
+        prepared_url = self._prepare_url(options.url)
+        if "_" in prepared_url.host:
+            # work around https://github.com/encode/httpx/discussions/2880
+            kwargs["extensions"] = {"sni_hostname": prepared_url.host.replace("_", "-")}
+
         # TODO: report this error to httpx
         return self._client.build_request(  # pyright: ignore[reportUnknownMemberType]
             headers=headers,
             timeout=self.timeout if isinstance(options.timeout, NotGiven) else options.timeout,
             method=options.method,
-            url=self._prepare_url(options.url),
+            url=prepared_url,
             # the `Query` type that we use is incompatible with qs'
             # `Params` type as it needs to be typed as `Mapping[str, object]`
             # so that passing a `TypedDict` doesn't cause an error.