add additional qs and header to http client; add additional queryParams to websocket

packages/stream_chat/lib/src/client/client.dart

@@ -31,6 +31,7 @@ import 'package:stream_chat/src/event_type.dart';
 import 'package:stream_chat/src/location.dart';
 import 'package:stream_chat/src/ws/connection_status.dart';
 import 'package:stream_chat/src/ws/websocket.dart';
+import 'package:stream_chat/version.dart';
 
 /// Handler function used for logging records. Function requires a single
 /// [LogRecord] as the only parameter.
@@ -80,6 +81,9 @@ class StreamChatClient {
       location: location,
       connectTimeout: connectTimeout,
       receiveTimeout: receiveTimeout,
+      headers: {
+        'X-Stream-Client': userAgent,
+      },
     );
 
     _chatApi = chatApi ??
@@ -99,6 +103,9 @@ class StreamChatClient {
           tokenManager: _tokenManager,
           handler: handleEvent,
           logger: detachedLogger('🔌'),
+          queryParams: {
+            'X-Stream-Client': userAgent,
+          },
         );
 
     _retryPolicy = retryPolicy ??

packages/stream_chat/lib/src/core/http/stream_http_client.dart

@@ -33,11 +33,14 @@ class StreamHttpClient {
       ..options.baseUrl = _options.baseUrl
       ..options.receiveTimeout = _options.receiveTimeout.inMilliseconds
       ..options.connectTimeout = _options.connectTimeout.inMilliseconds
-      ..options.queryParameters = {'api_key': apiKey}
+      ..options.queryParameters = {
+        'api_key': apiKey,
+        ..._options.queryParams,
+      }
       ..options.headers = {
         'Content-Type': 'application/json',
-        'X-Stream-Client': _options.userAgent,
         'Content-Encoding': 'application/gzip',
+        ..._options.headers,
       }
       ..interceptors.addAll([
         if (tokenManager != null) AuthInterceptor(this, tokenManager),

packages/stream_chat/lib/src/core/http/stream_http_client_options.dart

@@ -10,6 +10,8 @@ class StreamHttpClientOptions {
     this.location,
     this.connectTimeout = const Duration(seconds: 6),
     this.receiveTimeout = const Duration(seconds: 6),
+    this.queryParams = const {},
+    this.headers = const {},
   }) : _baseUrl = baseUrl ?? _defaultBaseURL;
 
   final String _baseUrl;
@@ -32,8 +34,20 @@ class StreamHttpClientOptions {
   /// received timeout, default to 6s
   final Duration receiveTimeout;
 
-  /// Get the current user agent
-  String get userAgent => 'stream-chat-dart-client-'
-      '${CurrentPlatform.name}-'
-      '${PACKAGE_VERSION.split('+')[0]}';
+  /// Common query parameters.
+  ///
+  /// List values use the default [ListFormat.multiCompatible].
+  ///
+  /// The value can be overridden per parameter by adding a [MultiParam]
+  /// object wrapping the actual List value and the desired format.
+  final Map<String, Object?> queryParams;
+
+  /// Http request headers.
+  /// The keys of initial headers will be converted to lowercase,
+  /// for example 'Content-Type' will be converted to 'content-type'.
+  ///
+  /// The key of Header Map is case-insensitive
+  /// eg: content-type and Content-Type are
+  /// regard as the same key.
+  final Map<String, Object?> headers;
 }

packages/stream_chat/lib/src/ws/websocket.dart

@@ -13,6 +13,7 @@ import 'package:stream_chat/src/core/models/event.dart';
 import 'package:stream_chat/src/core/models/user.dart';
 import 'package:stream_chat/src/event_type.dart';
 import 'package:stream_chat/src/ws/timer_helper.dart';
+import 'package:stream_chat/version.dart';
 import 'package:web_socket_channel/web_socket_channel.dart';
 import 'package:web_socket_channel/status.dart' as status;
 
@@ -41,11 +42,15 @@ class WebSocket with TimerHelper {
     this.reconnectionMonitorInterval = 10,
     this.healthCheckInterval = 20,
     this.reconnectionMonitorTimeout = 40,
+    this.queryParams = const {},
   }) : _logger = logger;
 
   ///
   final String apiKey;
 
+  /// Additional query parameters to be added to the websocket url
+  final Map<String, Object?> queryParams;
+
   /// WS base url
   final String baseUrl;
 
@@ -156,6 +161,7 @@ class WebSocket with TimerHelper {
       'api_key': apiKey,
       'authorization': token.rawValue,
       'stream-auth-type': token.authType.raw,
+      ...queryParams,
     };
     final scheme = baseUrl.startsWith('https') ? 'wss' : 'ws';
     final host = baseUrl.replaceAll(RegExp(r'(^\w+:|^)\/\/'), '');

packages/stream_chat/lib/version.dart

@@ -1,6 +1,12 @@
 import 'package:stream_chat/src/client/client.dart';
+import 'package:stream_chat/src/core/platform_detector/platform_detector.dart';
 
 /// Current package version
 /// Used in [StreamChatClient] to build the `x-stream-client` header
 // ignore: constant_identifier_names
 const PACKAGE_VERSION = '2.0.0';
+
+/// Get the current user agent
+String get userAgent => 'stream-chat-dart-client-'
+    '${CurrentPlatform.name}-'
+    '${PACKAGE_VERSION.split('+')[0]}';