Forward selected host

Author: JordonPhillips

codegen/core/src/main/java/software/amazon/smithy/python/codegen/integrations/RestJsonProtocolGenerator.java

@@ -43,10 +43,6 @@ public class RestJsonProtocolGenerator implements ProtocolGenerator {
             // This requires support of the httpChecksumRequired trait
             "RestJsonHttpChecksumRequired",
 
-            // These require support of the endpoint trait
-            "RestJsonEndpointTraitWithHostLabel",
-            "RestJsonEndpointTrait",
-
             // TODO: support the request compression trait
             // https://smithy.io/2.0/spec/behavior-traits.html#smithy-api-requestcompression-trait
             "SDKAppliedContentEncoding_restJson1",

packages/smithy-http/src/smithy_http/aio/protocols.py

@@ -50,11 +50,15 @@ def set_service_endpoint(
         if uri.query is not None and previous.query is not None:
             query = f"{uri.query}&{previous.query}"
 
+        host = uri.host
+        if previous.host:
+            host = previous.host + uri.host
+
         request.destination = _URI(
             scheme=uri.scheme,
             username=uri.username or previous.username,
             password=uri.password or previous.password,
-            host=uri.host,
+            host=host,
             port=uri.port or previous.port,
             path=path,
             query=query,