enter session only when it is not none. (#32359)

* enter session only when it is not none. * update
Azure · Oct 6, 2023 · b8dec12 · b8dec12
1 parent d2f6a0e
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diff --git a/sdk/core/azure-core/CHANGELOG.md b/sdk/core/azure-core/CHANGELOG.md
@@ -8,6 +8,8 @@
 
 ### Bugs Fixed
 
+- Added check that enter aiohttp session only when it is not None.
+
 ### Other Changes
 
 ## 1.29.4 (2023-09-07)

diff --git a/sdk/core/azure-core/azure/core/pipeline/transport/_aiohttp.py b/sdk/core/azure-core/azure/core/pipeline/transport/_aiohttp.py
@@ -124,7 +124,8 @@ async def open(self):
             self.session = aiohttp.ClientSession(**clientsession_kwargs)
         # pyright has trouble to understand that self.session is not None, since we raised at worst in the init
         self.session = cast(aiohttp.ClientSession, self.session)
-        await self.session.__aenter__()
+        if self.session is not None:
+            await self.session.__aenter__()
 
     async def close(self):
         """Closes the connection."""