コード例 #1
0
        /// <summary>
        /// Protocol methods can be called with this method.
        /// </summary>
        /// <param name="method">The method name</param>
        /// <param name="args">The method args</param>
        /// <param name="waitForCallback">
        /// If <c>true</c> the method will return a task to be completed when the message is confirmed by Chromium.
        /// If <c>false</c> the task will be considered complete after sending the message to Chromium.
        /// </param>
        /// <returns>The task.</returns>
        /// <exception cref="PuppeteerSharp.PuppeteerException">If the <see cref="Connection"/> is closed.</exception>
        public async Task <JObject> SendAsync(string method, object args = null, bool waitForCallback = true)
        {
            if (Connection == null)
            {
                throw new PuppeteerException(
                          $"Protocol error ({method}): Session closed. " +
                          $"Most likely the {TargetType} has been closed." +
                          $"Close reason: {CloseReason}");
            }

            var         id       = Connection.GetMessageID();
            MessageTask callback = null;

            if (waitForCallback)
            {
                callback = new MessageTask
                {
                    TaskWrapper = new TaskCompletionSource <JObject>(TaskCreationOptions.RunContinuationsAsynchronously),
                    Method      = method
                };
                _callbacks[id] = callback;
            }

            try
            {
                await Connection.RawSendASync(id, method, args, SessionId).ConfigureAwait(false);
            }
            catch (Exception ex)
            {
                if (waitForCallback && _callbacks.TryRemove(id, out _))
                {
                    callback.TaskWrapper.TrySetException(new MessageException(ex.Message, ex));
                }
            }

            return(waitForCallback ? await callback.TaskWrapper.Task.ConfigureAwait(false) : null);
        }
コード例 #2
0
 internal MessageException(MessageTask callback, ConnectionError error) : base(GetCallbackMessage(callback, error))
 {
 }
コード例 #3
0
 internal MessageException(MessageTask callback, JObject obj) : base(GetCallbackMessage(callback, obj))
 {
 }