Fixes #293, added property url to BaseResponse. related work(#321)

lib/src/base_request.dart

@@ -136,6 +136,7 @@ abstract class BaseRequest {
           contentLength: response.contentLength,
           request: response.request,
           headers: response.headers,
+          url: response.url,
           isRedirect: response.isRedirect,
           persistentConnection: response.persistentConnection,
           reasonPhrase: response.reasonPhrase);

lib/src/base_response.dart

@@ -29,6 +29,9 @@ abstract class BaseResponse {
   // TODO(nweiz): make this a HttpHeaders object.
   final Map<String, String> headers;
 
+  /// The url of the final response(possibly after redirections).
+  final String? url;
+
   final bool isRedirect;
 
   /// Whether the server requested that a persistent connection be maintained.
@@ -38,6 +41,7 @@ abstract class BaseResponse {
       {this.contentLength,
       this.request,
       this.headers = const {},
+      this.url,
       this.isRedirect = false,
       this.persistentConnection = true,
       this.reasonPhrase}) {

lib/src/io_client.dart

@@ -58,6 +58,9 @@ class IOClient extends BaseClient {
               response.contentLength == -1 ? null : response.contentLength,
           request: request,
           headers: headers,
+          url: response.redirects.isEmpty
+              ? request.url.toString()
+              : response.redirects.last.location.toString(),
           isRedirect: response.isRedirect,
           persistentConnection: response.persistentConnection,
           reasonPhrase: response.reasonPhrase,

lib/src/io_streamed_response.dart

@@ -21,6 +21,7 @@ class IOStreamedResponse extends StreamedResponse {
       {int? contentLength,
       BaseRequest? request,
       Map<String, String> headers = const {},
+      String? url,
       bool isRedirect = false,
       bool persistentConnection = true,
       String? reasonPhrase,
@@ -30,6 +31,7 @@ class IOStreamedResponse extends StreamedResponse {
             contentLength: contentLength,
             request: request,
             headers: headers,
+            url: url,
             isRedirect: isRedirect,
             persistentConnection: persistentConnection,
             reasonPhrase: reasonPhrase);

lib/src/response.dart

@@ -31,12 +31,14 @@ class Response extends BaseResponse {
   Response(String body, int statusCode,
       {BaseRequest? request,
       Map<String, String> headers = const {},
+      String? url,
       bool isRedirect = false,
       bool persistentConnection = true,
       String? reasonPhrase})
       : this.bytes(_encodingForHeaders(headers).encode(body), statusCode,
             request: request,
             headers: headers,
+            url: url,
             isRedirect: isRedirect,
             persistentConnection: persistentConnection,
             reasonPhrase: reasonPhrase);
@@ -45,6 +47,7 @@ class Response extends BaseResponse {
   Response.bytes(List<int> bodyBytes, int statusCode,
       {BaseRequest? request,
       Map<String, String> headers = const {},
+      String? url,
       bool isRedirect = false,
       bool persistentConnection = true,
       String? reasonPhrase})
@@ -53,6 +56,7 @@ class Response extends BaseResponse {
             contentLength: bodyBytes.length,
             request: request,
             headers: headers,
+            url: url,
             isRedirect: isRedirect,
             persistentConnection: persistentConnection,
             reasonPhrase: reasonPhrase);
@@ -64,6 +68,7 @@ class Response extends BaseResponse {
     return Response.bytes(body, response.statusCode,
         request: response.request,
         headers: response.headers,
+        url: response.url,
         isRedirect: response.isRedirect,
         persistentConnection: response.persistentConnection,
         reasonPhrase: response.reasonPhrase);

lib/src/streamed_response.dart

@@ -22,6 +22,7 @@ class StreamedResponse extends BaseResponse {
       {int? contentLength,
       BaseRequest? request,
       Map<String, String> headers = const {},
+      String? url,
       bool isRedirect = false,
       bool persistentConnection = true,
       String? reasonPhrase})
@@ -30,6 +31,7 @@ class StreamedResponse extends BaseResponse {
             contentLength: contentLength,
             request: request,
             headers: headers,
+            url: url,
             isRedirect: isRedirect,
             persistentConnection: persistentConnection,
             reasonPhrase: reasonPhrase);

test/io/request_test.dart

@@ -44,13 +44,15 @@ void main() {
     final response = await request.send();
 
     expect(response.statusCode, equals(302));
+    expect(response.url, equals(serverUrl.resolve('/redirect').toString()));
   });
 
   test('with redirects', () async {
     final request = http.Request('GET', serverUrl.resolve('/redirect'));
     final response = await request.send();
 
     expect(response.statusCode, equals(200));
+    expect(response.url, equals(serverUrl.resolve('/').toString()));
     final bytesString = await response.stream.bytesToString();
     expect(bytesString, parse(containsPair('path', '/')));
   });

test/response_test.dart

@@ -69,5 +69,15 @@ void main() {
       var response = await http.Response.fromStream(streamResponse);
       expect(response.bodyBytes, equals([104, 101, 108, 108, 111]));
     });
+
+    test('sets url', () async {
+      var controller = StreamController<List<int>>(sync: true);
+      var streamResponse = http.StreamedResponse(controller.stream, 302,
+          contentLength: 5, url: 'https://example.com');
+      controller.add([104, 101, 108, 108, 111]);
+      unawaited(controller.close());
+      var response = await http.Response.fromStream(streamResponse);
+      expect(response.url, equals('https://example.com'));
+    });
   });
 }