Update to allow attachments

NotificationNode.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Collections.Generic;
 using System.Collections.Specialized;
 using System.Linq;
@@ -8,7 +9,7 @@
 using LogicModule.ObjectModel;
 using LogicModule.ObjectModel.TypeSystem;
 
-namespace PushoverNode
+namespace christian_schwarz_gmx_de.Logic.PushoverNode
 {
     public class NotificationNode : LogicNodeBase
     {
@@ -25,6 +26,7 @@ public NotificationNode(INodeContext context)
             this.Token = typeService.CreateString(PortTypes.String, "Token");
             this.UserKey = typeService.CreateString(PortTypes.String, "UserKey");
             this.Message = typeService.CreateString(PortTypes.String, "Message");
+            this.Attachment = typeService.CreateString(PortTypes.String, "Attachment");
 
             this.Variables = new List<StringValueObject>();
 
@@ -53,6 +55,9 @@ public NotificationNode(INodeContext context)
         [Input(DisplayOrder = 6, InitOrder = 1, IsDefaultShown = false)]
         public IntValueObject VariableCount { get; private set; }
 
+        [Input(DisplayOrder = 7, InitOrder = 3)]
+        public StringValueObject Attachment { get; private set; }
+
         public override void Execute()
         {
             if (!this.Trigger.HasValue || !this.Trigger.WasSet || !this.Trigger.Value) return;
@@ -65,7 +70,8 @@ public override void Execute()
 
             using (var client = new WebClient())
             {
-                client.UploadValues("https://api.pushover.net/1/messages.json", parameters);
+                // client.UploadValues("https://api.pushover.net/1/messages.json", parameters);
+                HttpUploadFile("https://api.pushover.net/1/messages.json", this.Attachment, "image.jpeg", "attachment", "image/jpeg", parameters);
             }
         }
 
@@ -89,5 +95,64 @@ private void SetupIgnoreSSLTrust()
                     { return true; }
                 );
         }
+
+
+        public static void HttpUploadFile(string url, string file, string fileName, string paramName, string contentType, NameValueCollection nvc)
+        {
+            string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
+            byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
+
+            HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);
+            wr.ContentType = "multipart/form-data; boundary=" + boundary;
+            wr.Method = "POST";
+            wr.KeepAlive = true;
+            wr.Credentials = System.Net.CredentialCache.DefaultCredentials;
+            Stream rs = wr.GetRequestStream();
+            string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
+            foreach (string key in nvc.Keys)
+            {
+                rs.Write(boundarybytes, 0, boundarybytes.Length);
+                string formitem = string.Format(formdataTemplate, key, nvc[key]);
+                byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
+                rs.Write(formitembytes, 0, formitembytes.Length);
+            }
+            rs.Write(boundarybytes, 0, boundarybytes.Length);
+            string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
+            string header = string.Format(headerTemplate, paramName, fileName, contentType);
+            byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
+            rs.Write(headerbytes, 0, headerbytes.Length);
+
+            using (WebClient fileClient = new WebClient())
+            {
+                byte[] buffer = fileClient.DownloadData(file);
+                rs.Write(buffer, 0, buffer.Length);
+                fileClient.Dispose();
+            }            
+
+            byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
+            rs.Write(trailer, 0, trailer.Length);
+            rs.Close();
+            WebResponse wresp = null;
+            try
+            {
+                wresp = wr.GetResponse();
+                Stream stream2 = wresp.GetResponseStream();
+                StreamReader reader2 = new StreamReader(stream2);
+                var result = reader2.ReadToEnd();
+            }
+            catch (Exception ex)
+            {
+                // System.Windows.MessageBox.Show("Error occurred while converting file", "Error!");
+                if (wresp != null)
+                {
+                    wresp.Close();
+                    wresp = null;
+                }
+            }
+            finally
+            {
+                wr = null;
+            }
+        }
     }
 }