Allow simpler initialization of RemoteProviderConfig; fix issue in httpx client

llama_stack/distribution/client.py

@@ -143,14 +143,21 @@ def create_api_client_class(protocol, additional_protocol) -> Type:
             else:
                 data.update(convert(kwargs))
 
-            return dict(
+            ret = dict(
                 method=webmethod.method or "POST",
                 url=url,
-                headers={"Content-Type": "application/json"},
-                params=params,
-                json=data,
+                headers={
+                    "Accept": "application/json",
+                    "Content-Type": "application/json",
+                },
                 timeout=30,
             )
+            if params:
+                ret["params"] = params
+            if data:
+                ret["json"] = data
+
+            return ret
 
     # Add protocol methods to the wrapper
     for p in protocols:

llama_stack/providers/datatypes.py

@@ -6,6 +6,7 @@
 
 from enum import Enum
 from typing import Any, List, Optional, Protocol
+from urllib.parse import urlparse
 
 from llama_models.schema_utils import json_schema_type
 from pydantic import BaseModel, Field
@@ -145,13 +146,20 @@ Fully-qualified name of the module to import. The module is expected to have:
 
 class RemoteProviderConfig(BaseModel):
     host: str = "localhost"
-    port: int = 0
+    port: Optional[int] = None
     protocol: str = "http"
 
     @property
     def url(self) -> str:
+        if self.port is None:
+            return f"{self.protocol}://{self.host}"
         return f"{self.protocol}://{self.host}:{self.port}"
 
+    @classmethod
+    def from_url(cls, url: str) -> "RemoteProviderConfig":
+        parsed = urlparse(url)
+        return cls(host=parsed.hostname, port=parsed.port, protocol=parsed.scheme)
+
 
 @json_schema_type
 class RemoteProviderSpec(ProviderSpec):

llama_stack/providers/tests/conftest.py

@@ -25,15 +25,19 @@ class ProviderFixture(BaseModel):
 
 
 def remote_stack_fixture() -> ProviderFixture:
+    if url := os.getenv("REMOTE_STACK_URL", None):
+        config = RemoteProviderConfig.from_url(url)
+    else:
+        config = RemoteProviderConfig(
+            host=get_env_or_fail("REMOTE_STACK_HOST"),
+            port=int(get_env_or_fail("REMOTE_STACK_PORT")),
+        )
     return ProviderFixture(
         providers=[
             Provider(
                 provider_id="remote",
                 provider_type="remote",
-                config=RemoteProviderConfig(
-                    host=get_env_or_fail("REMOTE_STACK_HOST"),
-                    port=int(get_env_or_fail("REMOTE_STACK_PORT")),
-                ).model_dump(),
+                config=config.model_dump(),
             )
         ],
     )