Replace httpx and httpx-sse with httpx2 (#2972)

Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com>

examples/servers/simple-auth/mcp_simple_auth/token_verifier.py

@@ -33,7 +33,7 @@ class IntrospectionTokenVerifier(TokenVerifier):
 
     async def verify_token(self, token: str) -> AccessToken | None:
         """Verify token via introspection endpoint."""
-        import httpx
+        import httpx2
 
         # Validate URL to prevent SSRF attacks
         if not self.introspection_endpoint.startswith(("https://", "http://localhost", "http://127.0.0.1")):
@@ -41,10 +41,10 @@ class IntrospectionTokenVerifier(TokenVerifier):
             return None
 
         # Configure secure HTTP client
-        timeout = httpx.Timeout(10.0, connect=5.0)
-        limits = httpx.Limits(max_connections=10, max_keepalive_connections=5)
+        timeout = httpx2.Timeout(10.0, connect=5.0)
+        limits = httpx2.Limits(max_connections=10, max_keepalive_connections=5)
 
-        async with httpx.AsyncClient(
+        async with httpx2.AsyncClient(
             timeout=timeout,
             limits=limits,
             verify=True,  # Enforce SSL verification

examples/servers/simple-auth/pyproject.toml

@@ -9,7 +9,7 @@ license = { text = "MIT" }
 dependencies = [
     "anyio>=4.5",
     "click>=8.2.0",
-    "httpx>=0.27",
+    "httpx2>=2.5.0",
     "mcp",
     "pydantic>=2.0",
     "pydantic-settings>=2.5.2",