made sendWsMessage callable without coroutine

Runtime/ChromeDevtools/BrowserTab.cs

@@ -9,6 +9,7 @@ using System.IO;
 using System.Net.WebSockets;
 using System.Text;
 using System.Threading;
+using System.Threading.Tasks;
 using UnityEngine;
 
 namespace ChromeDevTools
@@ -45,6 +46,7 @@ namespace ChromeDevTools
 
 
         /// <summary>
+        /// Coroutine wrapper for _SendWsMessagel
         /// json serializes and sends a command over the devtools websocket
         /// </summary>
         /// <typeparam name="T">IDevtoolsCommand</typeparam>
@@ -58,6 +60,25 @@ namespace ChromeDevTools
                 yield return new WaitUntil(() => ws.State == WebSocketState.Open);
             }
 
+            var sendTask = _SendWsMessage(command, callback);
+            // wait until the command has been send
+            yield return new WaitUntil(() => sendTask.IsCompleted);
+        }
+
+        /// <summary>
+        /// json serializes and sends a command over the devtools websocket
+        /// </summary>
+        /// <typeparam name="T">IDevtoolsCommand</typeparam>
+        /// <param name="command"></param>
+        /// <returns>Task that resoves then the command is send</returns>
+        private async Task _SendWsMessage<T>(T command, System.Action<IDevtoolsResponse> callback) where T : IDevtoolsCommand
+        {
+            // wait if the websocket is not yet open
+            if (ws.State != WebSocketState.Open)
+            {
+                throw new InvalidOperationException("Websocket is not open");
+            }
+
             // apply the message wrapper
             var wrappedCommand = new DevtoolsCommandWrapper<T>(command);
 
@@ -76,11 +97,8 @@ namespace ChromeDevTools
 
             // json serialize the command and send it
             var json = JsonConvert.SerializeObject(wrappedCommand, Browser.serializerSettings);
-            UnityEngine.Debug.Log($"ws send: '{json}'");
-            var sendTask = ws.SendAsync(Encoding.UTF8.GetBytes(json), WebSocketMessageType.Text, true, Browser.cancellationTokenSource.Token);
-
-            // wait until the command has been send
-            yield return new WaitUntil(() => sendTask.IsCompleted);
+            Debug.Log($"ws send: '{json}'");
+            await ws.SendAsync(Encoding.UTF8.GetBytes(json), WebSocketMessageType.Text, true, Browser.cancellationTokenSource.Token);
         }
 
             /// <summary>
@@ -180,7 +198,7 @@ namespace ChromeDevTools
         {
             Debug.Log($"BrowserTab close called for: '{pageTarget.Url}'");
             //TODO: fix SendWsMessage without coroutine
-            SendWsMessage(new closeTarget(pageTarget.Id), delegate
+            _ = _SendWsMessage(new closeTarget(pageTarget.Id), delegate
               {
                   ws.CloseAsync(WebSocketCloseStatus.NormalClosure, "tab closed", CancellationToken.None)
                   .ContinueWith(delegate