use protobuf ListValue for response headers

Author: Jon Bernard

ldk/go/examples/network/loop/loop.go

@@ -3,7 +3,6 @@ package loop
 import (
 	"context"
 	"encoding/json"
-	"net/http"
 	"time"
 
 	ldk "github.com/open-olive/loop-development-kit/ldk/go"
@@ -84,15 +83,9 @@ func (c *Loop) LoopStart(sidekick ldk.Sidekick) error {
 	}
 
 	if response.ResponseCode == 200 {
-		var headers http.Header
 		var data apiResponse
 
-		if err := json.Unmarshal(response.Headers, &headers); err != nil {
-			c.logger.Error("Error unmarshaling response headers", err)
-			return err
-		}
-
-		c.logger.Info("Response headers", headers)
+		c.logger.Info("Response headers", response.Headers)
 
 		if err := json.Unmarshal(response.Data, &data); err != nil {
 			c.logger.Error("Error unmarshaling response payload", err)

ldk/go/networkClient.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/open-olive/loop-development-kit/ldk/go/proto"
+	structpb "google.golang.org/protobuf/types/known/structpb"
 )
 
 // NetworkClient is the client used by the NetworkService
@@ -16,7 +17,7 @@ type NetworkClient struct {
 type HTTPResponse struct {
 	ResponseCode int
 	Data         []byte
-	Headers      []byte
+	Headers      map[string]*structpb.ListValue
 }
 
 // HTTPRequest is the structure received from HttpRequest

ldk/go/proto/network.pb.go

@@ -2,6 +2,7 @@ syntax = "proto3";
 package proto;
 option go_package = ".;proto";
 
+import "google/protobuf/struct.proto";
 import "session.proto";
 
 service Network {
@@ -19,5 +20,5 @@ message HTTPRequestMsg {
 message HTTPResponseMsg {
     uint32 responseCode = 1;
     bytes data = 2;
-    bytes headers = 3;
+    map <string, google.protobuf.ListValue> headers = 3;
 }