Implements FS#245: Implement FiletransferHttp (upload and delete), some minor bug fixes including to fail a JingleTransfer in case criterias are not met

30 files changed, 278 insertions, 207 deletions

diff --git a/build.gradle b/build.gradle
index 354456f1..0d7069a3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -73,7 +73,7 @@ ext {
 
 android {
 	compileSdkVersion 23
-	buildToolsVersion "23.0.2"
+	buildToolsVersion '23.0.2'
 
 	defaultConfig {
 		minSdkVersion 14
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index e1adff10..518d1f1f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Apr 09 13:15:52 CEST 2016
+#Wed May 31 19:49:33 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-2.12-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.12-all.zip
diff --git a/libs/3rdParty/picasso-2.5.2.jar b/libs/3rdParty/picasso-2.5.2.jar
new file mode 100644
index 00000000..6acbaa14
--- /dev/null
+++ b/libs/3rdParty/picasso-2.5.2.jar
diff --git a/libs/MemorizingTrustManager/build.gradle b/libs/MemorizingTrustManager/build.gradle
index dc2e7b60..5349c4d5 100644
--- a/libs/MemorizingTrustManager/build.gradle
+++ b/libs/MemorizingTrustManager/build.gradle
@@ -11,7 +11,7 @@ apply plugin: 'android-library'
 
 android {
 	compileSdkVersion 19
-	buildToolsVersion "19.1"
+	buildToolsVersion '19.1'
 	defaultConfig {
         	minSdkVersion 7
 		targetSdkVersion 19
diff --git a/libs/colorpicker/build.gradle b/libs/colorpicker/build.gradle
index 1920d0f6..fc6b96fc 100644
--- a/libs/colorpicker/build.gradle
+++ b/libs/colorpicker/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion 21
-    buildToolsVersion "21.1.2"
+    buildToolsVersion '21.1.2'
 
     defaultConfig {
         minSdkVersion 7
diff --git a/libs/emojicon/build.gradle b/libs/emojicon/build.gradle
index 659dafb0..8e3728ed 100644
--- a/libs/emojicon/build.gradle
+++ b/libs/emojicon/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion 21
-    buildToolsVersion "21.1.2"
+    buildToolsVersion '21.1.2'
 
     defaultConfig {
         minSdkVersion 8
diff --git a/libs/thedevstacklogcat/build.gradle b/libs/thedevstacklogcat/build.gradle
index 00fe2a0b..13cf1dc8 100644
--- a/libs/thedevstacklogcat/build.gradle
+++ b/libs/thedevstacklogcat/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion 22
-    buildToolsVersion "22.0.1"
+    buildToolsVersion '22.0.1'
 
     defaultConfig {
         minSdkVersion 14
diff --git a/src/main/java/de/thedevstack/conversationsplus/enums/FileStatus.java b/src/main/java/de/thedevstack/conversationsplus/enums/FileStatus.java
index e4254aeb..31b40512 100644
--- a/src/main/java/de/thedevstack/conversationsplus/enums/FileStatus.java
+++ b/src/main/java/de/thedevstack/conversationsplus/enums/FileStatus.java
@@ -16,5 +16,5 @@ public enum FileStatus {
     DELETING,
     NOT_FOUND,
     DOWNLOADING,
-    CHECKING_FILE_SIZE;
+    CHECKING_FILE_SIZE, UPLOAD_FAILED;
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/persistance/FileBackend.java b/src/main/java/de/thedevstack/conversationsplus/persistance/FileBackend.java
index 6643c276..d1da4a8e 100644
--- a/src/main/java/de/thedevstack/conversationsplus/persistance/FileBackend.java
+++ b/src/main/java/de/thedevstack/conversationsplus/persistance/FileBackend.java
@@ -23,6 +23,7 @@ import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
 import de.thedevstack.conversationsplus.entities.FileParams;
 import de.thedevstack.conversationsplus.exceptions.FileCopyException;
 import de.thedevstack.conversationsplus.persistance.observers.FileDeletionObserver;
+import de.thedevstack.conversationsplus.utils.FileUtils;
 import de.thedevstack.conversationsplus.utils.StreamUtil;
 import de.thedevstack.conversationsplus.Config;
 import de.thedevstack.conversationsplus.R;
@@ -44,10 +45,25 @@ public class FileBackend {
         if (null == INSTANCE) {
             INSTANCE = new FileBackend();
         }
+        INSTANCE.checkIfDirectoriesExistAndCreateIfNot();
         INSTANCE.initFileObservers();
         INSTANCE.createNoMedia();
     }
 
+    private void checkIfDirectoriesExistAndCreateIfNot() {
+        this.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getPrivateFileDirectoryPath());
+        this.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getConversationsFileDirectory());
+        this.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getConversationsImageDirectory());
+        this.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getPrivateImageDirectoryPath());
+    }
+
+    private void checkIfDirectoryExistsAndCreateIfNot(String directoryPath) {
+        File directory = new File(directoryPath);
+        if (!directory.exists()) {
+            directory.mkdirs();
+        }
+    }
+
     private void initFileObservers() {
         this.privateFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getPrivateFileDirectoryPath());
         this.privateFilesImageDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
@@ -72,6 +88,7 @@ public class FileBackend {
 	}
 
     public static void onFileTransferFolderChanged() {
+        INSTANCE.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getConversationsFileDirectory());
         INSTANCE.conversationsFilesDirectoryObserver.stopWatching();
         INSTANCE.conversationsFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
         INSTANCE.conversationsFilesDirectoryObserver.startWatching();
@@ -79,6 +96,7 @@ public class FileBackend {
     }
 
     public static void onImageTransferFolderChanged() {
+        INSTANCE.checkIfDirectoryExistsAndCreateIfNot(FileBackend.getConversationsImageDirectory());
         INSTANCE.conversationsImagesDirectoryObserver.stopWatching();
         INSTANCE.conversationsImagesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsImageDirectory());
         INSTANCE.conversationsImagesDirectoryObserver.startWatching();
@@ -107,7 +125,7 @@ public class FileBackend {
 	}
 
 	public static DownloadableFile getFile(Message message, boolean decrypted) {
-        DownloadableFile downloadableFile = new DownloadableFile(getFilePath(message, decrypted));
+        DownloadableFile downloadableFile = new DownloadableFile(getFilePath(message, decrypted, null));
         FileParams fileParams = message.getFileParams();
         if (null != fileParams) {
             if (null != fileParams.getKey()) {
@@ -122,10 +140,7 @@ public class FileBackend {
 	}
 
     protected static String getFilePath(Message message, String extension) {
-        String path = FileBackend.getFilePath(message, true);
-        if (!path.endsWith(extension)) {
-            path += "." + extension;
-        }
+        String path = FileBackend.getFilePath(message, true, extension);
 
         return path;
     }
@@ -137,7 +152,7 @@ public class FileBackend {
         return getFilePath(message, extension);
     }
 
-    protected static String getFilePath(Message message, boolean decrypted) {
+    protected static String getFilePath(Message message, boolean decrypted, String fallbackExtension) {
         final boolean encrypted = !decrypted
                 && (message.getEncryption() == Message.ENCRYPTION_PGP
                 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
@@ -157,7 +172,11 @@ public class FileBackend {
                 path = getConversationsFileDirectory() + path;
             }
             String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
-            path += "." + extension;
+            if (null != extension) {
+                path += "." + extension;
+            } else if (null != fallbackExtension) {
+                path += "." +fallbackExtension;
+            }
 
             fileParams.setPath(path);
         }
@@ -218,9 +237,11 @@ public class FileBackend {
 	}
 
     public static DownloadableFile compressImageAndCopyToPrivateStorage(Message message, Bitmap scaledBitmap) throws FileCopyException {
-        String path = getFilePath(message, "jpg");
-        message.getFileParams().setPath(path);
-        message.setRelativeFilePath(path); // TODO: Remove
+        if (null == message.getFileParams() || null == message.getFileParams().getPath()) {
+            String path = getFilePath(message, "jpg");
+            message.setRelativeFilePath(path); // TODO: Remove
+        }
+
         DownloadableFile file = getFile(message);
         file.getParentFile().mkdirs();
         OutputStream os = null;
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java
index 8d971bb2..b99f8d82 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java
@@ -8,6 +8,7 @@ import java.util.TreeSet;
 import de.thedevstack.android.logcat.Logging;
 import de.thedevstack.conversationsplus.Config;
 import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.enums.FileStatus;
 import de.thedevstack.conversationsplus.services.FileTransferService;
 import de.thedevstack.conversationsplus.services.filetransfer.http.upload.HttpUploadFileTransferEntity;
 import de.thedevstack.conversationsplus.utils.MessageUtil;
@@ -124,6 +125,7 @@ public class FileTransferManager implements FileTransferStatusListener {
                 }
             }
             if (!retransferStarted) {
+                entity.getMessage().getFileParams().setFileStatus(FileStatus.UPLOAD_FAILED);
                 MessageUtil.markMessage(entity.getMessage(), Message.STATUS_SEND_FAILED);
             }
         }
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteRemoteFileService.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteRemoteFileService.java
index 2085cf4b..83f7e359 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteRemoteFileService.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteRemoteFileService.java
@@ -1,16 +1,13 @@
 package de.thedevstack.conversationsplus.services.filetransfer.http.delete;
 
-import de.thedevstack.conversationsplus.ConversationsPlusApplication;
 import de.thedevstack.conversationsplus.entities.Account;
 import de.thedevstack.conversationsplus.entities.Message;
 import de.thedevstack.conversationsplus.enums.FileStatus;
-import de.thedevstack.conversationsplus.persistance.DatabaseBackend;
 import de.thedevstack.conversationsplus.ui.listeners.SimpleUserDecisionCallback;
 import de.thedevstack.conversationsplus.utils.MessageUtil;
-import de.thedevstack.conversationsplus.utils.UiUpdateHelper;
 import de.thedevstack.conversationsplus.utils.XmppSendUtil;
 import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
-import de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete.FileTransferHttpDeleteSlotRequestPacketGenerator;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete.FileTransferHttpDeleteRequestPacketGenerator;
 import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 
@@ -36,9 +33,9 @@ public class DeleteRemoteFileService implements SimpleUserDecisionCallback {
                 Account account = this.message.getConversation().getAccount();
                 Jid host = account.getXmppConnection().findDiscoItemByFeature(FileTransferHttp.NAMESPACE);
                 if (null != host) {
-                    IqPacket request = FileTransferHttpDeleteSlotRequestPacketGenerator.generate(host, path);
+                    IqPacket request = FileTransferHttpDeleteRequestPacketGenerator.generate(host, path);
                     MessageUtil.setAndSaveFileStatus(this.message, FileStatus.DELETING);
-                    XmppSendUtil.sendIqPacket(account, request, new DeleteTokenReceived(remoteFile));
+                    XmppSendUtil.sendIqPacket(account, request, new DeletedIqPacketReceived(remoteFile));
                 }
             }
         }
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteTokenReceived.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteTokenReceived.java
deleted file mode 100644
index d61a5c6a..00000000
--- a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeleteTokenReceived.java
+++ /dev/null
@@ -1,97 +0,0 @@
-package de.thedevstack.conversationsplus.services.filetransfer.http.delete;
-
-import android.widget.Toast;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.io.IOException;
-
-import de.thedevstack.android.logcat.Logging;
-import de.thedevstack.conversationsplus.R;
-import de.thedevstack.conversationsplus.entities.Account;
-import de.thedevstack.conversationsplus.enums.FileStatus;
-import de.thedevstack.conversationsplus.http.HttpClient;
-import de.thedevstack.conversationsplus.utils.MessageUtil;
-import de.thedevstack.conversationsplus.utils.ui.ConversationsPlusToast;
-import de.thedevstack.conversationsplus.xmpp.OnIqPacketReceived;
-import de.thedevstack.conversationsplus.xmpp.exceptions.ServiceUnavailableException;
-import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
-import de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete.DeleteSlotPacketParser;
-import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
-import okhttp3.Call;
-import okhttp3.Callback;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.Response;
-
-/**
- *
- */
-public class DeleteTokenReceived implements OnIqPacketReceived {
-    private static final String HEADER_NAME_DELETE_TOKEN = "X-FILETRANSFER-HTTP-DELETE-TOKEN";
-    private final DeleteRemoteFile remoteFile;
-
-    public DeleteTokenReceived(DeleteRemoteFile remoteFile) {
-        this.remoteFile = remoteFile;
-    }
-
-    @Override
-    public void onIqPacketReceived(Account account, IqPacket packet) {
-        try {
-            String url = this.remoteFile.getPath();
-            String deleteToken = DeleteSlotPacketParser.parseDeleteToken(packet);
-            Logging.d("filetransfer.http.delete", "Got delete token '" + deleteToken + "' for remote file '" + remoteFile.getPath() + "'");
-            OkHttpClient client = HttpClient.getOkHttpClient(true);
-            Request request = new Request.Builder()
-                    .url(url)
-                    .addHeader(HEADER_NAME_DELETE_TOKEN, deleteToken)
-                    .delete()
-                    .build();
-            client.newCall(request).enqueue(new Callback() {
-                @Override
-                public void onFailure(Call call, IOException e) {
-                    Logging.e("filetransfer.http.delete", "Error while connecting to '" + call.request().url() + "': " + e.getMessage());
-                    MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), FileStatus.DELETE_FAILED);
-                }
-
-                @Override
-                public void onResponse(Call call, Response response) throws IOException {
-                    if (response.isSuccessful()) {
-                        MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), FileStatus.DELETED);
-                        Logging.i("filetransfer.http.delete", "Remote file successfully deleted '" + remoteFile.getPath() + "'");
-                    } else {
-                        String detailedMessage = response.body().string();
-                        FileStatus fileStatus = FileStatus.DELETE_FAILED;
-                        switch (response.code()) {
-                            case 403:
-                            case 500:
-                                try {
-                                    JSONObject jsonObject = new JSONObject(detailedMessage);
-                                    detailedMessage = jsonObject.getString("msg");
-                                } catch (JSONException e) {
-                                    Logging.e("filetransfer.http.delete", "Failed to get error message from expected json response: " + detailedMessage);
-                                }
-                                break;
-                            case 404:
-                                fileStatus = FileStatus.DELETED;
-                                Logging.i("filetransfer.http.delete", "Failed to delete file - it was already deleted.");
-                                break;
-                        }
-                        Logging.e("filetransfer.http.delete", "Could not delete remote file '" + remoteFile.getPath() + "'. Response Code: " + response.code() + ", details: " + detailedMessage);
-                        MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), fileStatus);
-                    }
-                }
-            });
-
-        } catch (XmppException e) {
-            Logging.e("filetransfer.http.delete", "Error while trying to get the delete token: " + e.getMessage());
-            int messageResId = R.string.cplus_remote_file_delete_failed;
-            if (e instanceof ServiceUnavailableException) {
-                messageResId = R.string.cplus_remote_file_delete_service_unavailable;
-            }
-            ConversationsPlusToast.makeErrorToast(messageResId, Toast.LENGTH_LONG);
-            MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), FileStatus.DELETE_FAILED);
-        }
-    }
-}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeletedIqPacketReceived.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeletedIqPacketReceived.java
new file mode 100644
index 00000000..470a6010
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/delete/DeletedIqPacketReceived.java
@@ -0,0 +1,47 @@
+package de.thedevstack.conversationsplus.services.filetransfer.http.delete;
+
+import android.widget.Toast;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.R;
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.enums.FileStatus;
+import de.thedevstack.conversationsplus.utils.MessageUtil;
+import de.thedevstack.conversationsplus.utils.ui.ConversationsPlusToast;
+import de.thedevstack.conversationsplus.xmpp.OnIqPacketReceived;
+import de.thedevstack.conversationsplus.xmpp.exceptions.ServiceUnavailableException;
+import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete.DeletedPacketParser;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+
+/**
+ *
+ */
+public class DeletedIqPacketReceived implements OnIqPacketReceived {
+    private final DeleteRemoteFile remoteFile;
+
+    public DeletedIqPacketReceived(DeleteRemoteFile remoteFile) {
+        this.remoteFile = remoteFile;
+    }
+
+    @Override
+    public void onIqPacketReceived(Account account, IqPacket packet) {
+        try {
+            boolean fileIsDeleted = DeletedPacketParser.parseDeleteToken(packet);
+            if (fileIsDeleted) {
+                MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), FileStatus.DELETED);
+                Logging.i("filetransfer.http.delete", "Remote file successfully deleted '" + remoteFile.getPath() + "'");
+            } else {
+                Logging.e("filetransfer.http.delete", "Unexpectedly failed to delete remote file.");
+            }
+        } catch (XmppException e) {
+            Logging.e("filetransfer.http.delete", "Error while trying to delete remote file: " + e.getMessage());
+            int messageResId = R.string.cplus_remote_file_delete_failed;
+            if (e instanceof ServiceUnavailableException) {
+                messageResId = R.string.cplus_remote_file_delete_service_unavailable;
+            }
+            ConversationsPlusToast.makeErrorToast(messageResId, Toast.LENGTH_LONG);
+            MessageUtil.setAndSaveFileStatus(remoteFile.getMessage(), FileStatus.DELETE_FAILED);
+        }
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/upload/HttpUploadFileTransferService.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/upload/HttpUploadFileTransferService.java
index c2e92a9e..28bb3a1c 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/upload/HttpUploadFileTransferService.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/http/upload/HttpUploadFileTransferService.java
@@ -15,10 +15,7 @@ import de.thedevstack.conversationsplus.services.filetransfer.AbstractFileTransf
 import de.thedevstack.conversationsplus.utils.AccountUtil;
 import de.thedevstack.conversationsplus.utils.MessageUtil;
 import de.thedevstack.conversationsplus.utils.XmppSendUtil;
-import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
-import de.thedevstack.conversationsplus.xmpp.filetransfer.http.upload.HttpUpload;
 import de.thedevstack.conversationsplus.xmpp.filetransfer.http.upload.HttpUploadRequestSlotPacketGenerator;
-import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 
 /**
@@ -63,29 +60,18 @@ public class HttpUploadFileTransferService extends AbstractFileTransferService i
             file.setExpectedSize(inputStreamAndExpectedSize.second);
 
             Logging.d("httpupload", "Requesting upload slot for file upload");
-            Jid host = this.getHost(account);
-            if (null != host) {
-                IqPacket request = HttpUploadRequestSlotPacketGenerator.generate(host, file.getName(), file.getSize(), file.getMimeType());
-                XmppSendUtil.sendIqPacket(account, request, new HttpUploadSlotRequestReceived(entity));
-                MessageUtil.markMessage(message, Message.STATUS_UNSEND);
+            IqPacket request = HttpUploadRequestSlotPacketGenerator.generate(account, message.getContact().getJid(), file.getName(), file.getSize(), file.getMimeType());
+            XmppSendUtil.sendIqPacket(account, request, new HttpUploadSlotRequestReceived(entity));
+            MessageUtil.markMessage(message, Message.STATUS_UNSEND);
 
-                Logging.d("httpupload", "Upload slot for file upload requested");
-                started = true;
-            }
+            Logging.d("httpupload", "Upload slot for file upload requested");
+            started = true;
         } catch (FileNotFoundException e) {
             Logging.e("httpupload", "Could not find file, exception message: " + e.getMessage());
         }
         return started;
     }
 
-    private Jid getHost(Account account) {
-        Jid host = account.getXmppConnection().findDiscoItemByFeature(FileTransferHttp.NAMESPACE);
-        if (null == host) {
-            host = account.getXmppConnection().findDiscoItemByFeature(HttpUpload.NAMESPACE);
-        }
-        return host;
-    }
-
     /**
      * Checks whether a message can be sent using this service or not.
      *
@@ -99,6 +85,7 @@ public class HttpUploadFileTransferService extends AbstractFileTransferService i
                 && null != message.getConversation().getAccount()
                 && null != message.getFileParams()
                 && message.needsUploading()
-                && AccountUtil.isHttpUploadAvailable(message.getConversation().getAccount(), message.getFileParams().getSize());
+                && (AccountUtil.isHttpUploadAvailable(message.getConversation().getAccount(), message.getFileParams().getSize())
+                    || AccountUtil.isFileTransferHttpAvailable(message.getConversation().getAccount()));
     }
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/ConversationAdapter.java b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/ConversationAdapter.java
index df7fc922..9e550988 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/ConversationAdapter.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/ConversationAdapter.java
@@ -24,6 +24,7 @@ import de.thedevstack.conversationsplus.ConversationsPlusColors;
 import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
 import de.thedevstack.conversationsplus.ui.listeners.ShowResourcesListDialogListener;
 import de.thedevstack.conversationsplus.utils.ImageUtil;
+import de.thedevstack.conversationsplus.utils.MessageUtil;
 import de.tzur.conversations.Settings;
 import de.thedevstack.conversationsplus.R;
 import de.thedevstack.conversationsplus.entities.Account;
@@ -108,10 +109,7 @@ public class ConversationAdapter extends ArrayAdapter<Conversation> {
 			imagePreview.setVisibility(View.GONE);
             CharSequence msgText = preview.first;
             String msgPrefix = null;
-            if (message.getStatus() == Message.STATUS_SEND
-                    || message.getStatus() == Message.STATUS_SEND_DISPLAYED
-                    || message.getStatus() == Message.STATUS_SEND_FAILED
-                    || message.getStatus() == Message.STATUS_SEND_RECEIVED) {
+            if (MessageUtil.isMessageSent(message)) {
                 msgPrefix = activity.getString(R.string.cplus_me);
             } else if (conversation.getMode() == Conversation.MODE_MULTI) {
                 msgPrefix = UIHelper.getMessageDisplayName(message);
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
index e49575f6..9a501b89 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
@@ -496,14 +496,31 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 
     private void displayFileMessage(final Message message, ViewHolder viewHolder) {
         Transferable transferable = message.getTransferable();
-        if (null != transferable) {
+        if (FileStatus.CHECKING_FILE_SIZE == message.getFileParams().getFileStatus()) {
+            displayInfoMessage(viewHolder, activity.getString(R.string.checking_remote_filesize));
+        } else if (MessageUtil.isAttachedFileAnImage(message)
+                && (FileStatus.DOWNLOADED == message.getFileParams().getFileStatus())
+                    || FileStatus.DELETED == message.getFileParams().getFileStatus()
+                    || FileStatus.DELETING == message.getFileParams().getFileStatus()
+                    || FileStatus.DELETE_FAILED == message.getFileParams().getFileStatus()
+                    || FileStatus.UPLOADED == message.getFileParams().getFileStatus()) {
+            displayImageMessage(viewHolder, message);
+        } else if ((MessageUtil.isTypeFileAndDecrypted(message) || FileStatus.DOWNLOADED == message.getFileParams().getFileStatus())
+                    && !MessageUtil.needsDownload(message)) {
+            displayOpenableMessage(viewHolder, message);
+        } else if (Message.Decision.NEVER == message.treatAsDownloadable() || !MessageUtil.mayFileRemoteAvailable(message)) {
+            displayTextMessage(viewHolder, message);
+        } else if (FileStatus.UPLOAD_FAILED == message.getFileParams().getFileStatus()) {
+            displayImageMessage(viewHolder, message); // TODO Show failed status
+        } else if (null != transferable) {
             switch (transferable.getStatus()) {
                 case Transferable.STATUS_OFFER:
                 case Transferable.STATUS_OFFER_CHECK_FILESIZE:
                     displayDownloadableMessage(viewHolder, message);
                     break;
                 case Transferable.STATUS_UPLOADING:
-                    displayFileMessage(message, viewHolder);
+                    // Should not happen, since this is now covered by the other if-statements
+                    // TODO Maybe in Jingle File Transfer?? Needs to be checked!
                     break;
                 case Transferable.STATUS_DELETED:
                 case Transferable.STATUS_CHECKING:
@@ -513,15 +530,6 @@ public class MessageAdapter extends ArrayAdapter<Message> {
                     displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first);
                     break;
             }
-        } else if (FileStatus.CHECKING_FILE_SIZE == message.getFileParams().getFileStatus()) {
-            displayInfoMessage(viewHolder, activity.getString(R.string.checking_remote_filesize));
-        } else if (MessageUtil.isAttachedFileAnImage(message) && FileStatus.DOWNLOADED == message.getFileParams().getFileStatus()) {
-            displayImageMessage(viewHolder, message);
-        } else if ((MessageUtil.isTypeFileAndDecrypted(message) || FileStatus.DOWNLOADED == message.getFileParams().getFileStatus())
-                    && !MessageUtil.needsDownload(message)) {
-            displayOpenableMessage(viewHolder, message);
-        } else if (Message.Decision.NEVER == message.treatAsDownloadable() || !MessageUtil.mayFileRemoteAvailable(message)) {
-            displayTextMessage(viewHolder, message);
         } else {
             displayDownloadableMessage(viewHolder, message);
         }
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/dialogs/MessageDetailsDialog.java b/src/main/java/de/thedevstack/conversationsplus/ui/dialogs/MessageDetailsDialog.java
index c640ce6d..b43384a4 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/dialogs/MessageDetailsDialog.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/dialogs/MessageDetailsDialog.java
@@ -56,7 +56,7 @@ public class MessageDetailsDialog extends AbstractAlertDialog {
      * @param message the message to display in dialog
      */
     protected void displayFileInfo(View view, Message message) {
-        if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
+        if (message.isHttpUploaded() || message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) {
             Logging.d("messagedetailsfile", "File is stored in path: " + message.getRelativeFilePath());
             view.findViewById(R.id.dlgMsgDetFileTable).setVisibility(View.VISIBLE);
             if (null != message.getFileParams()) {
diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/listeners/ResizePictureUserDecisionListener.java b/src/main/java/de/thedevstack/conversationsplus/ui/listeners/ResizePictureUserDecisionListener.java
index 1574bb85..68d2e47c 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/listeners/ResizePictureUserDecisionListener.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/listeners/ResizePictureUserDecisionListener.java
@@ -31,6 +31,7 @@ import de.thedevstack.conversationsplus.ui.UiCallback;
 import de.thedevstack.conversationsplus.ui.XmppActivity;
 import de.thedevstack.conversationsplus.utils.MimeUtils;
 import de.thedevstack.conversationsplus.utils.StreamUtil;
+import de.thedevstack.conversationsplus.utils.UiUpdateHelper;
 
 /**
  * Listener to let the user decide whether to resize a picture before sending or not.
@@ -57,6 +58,7 @@ public class ResizePictureUserDecisionListener implements UserDecisionListener {
 
             @Override
             public void success(Message message) {
+                UiUpdateHelper.updateConversationUi();
                 ResizePictureUserDecisionListener.this.xmppConnectionService.sendMessage(message);
             }
 
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/MessageUtil.java b/src/main/java/de/thedevstack/conversationsplus/utils/MessageUtil.java
index e0d627b9..5e629485 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/MessageUtil.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/MessageUtil.java
@@ -181,6 +181,7 @@ public final class MessageUtil {
         switch (message.getStatus()) {
             case Message.STATUS_SEND:
             case Message.STATUS_SEND_DISPLAYED:
+            case Message.STATUS_SEND_FAILED:
             case Message.STATUS_SEND_RECEIVED:
                 return true;
             default:
@@ -283,7 +284,7 @@ public final class MessageUtil {
             fileParams.setHeight(imageHeight);
         }
         String relativeFilePathFromMessage = message.getRelativeFilePath();
-        if (null != relativeFilePathFromMessage && relativeFilePathFromMessage.startsWith("/")) {
+        if (null != relativeFilePathFromMessage && relativeFilePathFromMessage.startsWith("/") && (null == fileParams.getPath() || !relativeFilePathFromMessage.equals(fileParams.getPath()))) {
             fileParams.setPath(relativeFilePathFromMessage);
         }
     }
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/XmppConnection.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/XmppConnection.java
index 1082e19f..b886bf65 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/XmppConnection.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/XmppConnection.java
@@ -1208,6 +1208,7 @@ public class XmppConnection implements Runnable {
 			disconnect(true);
 			return;
 		}
+		Logging.d("SendIqPacket", "Outgoing stanza: " + packet.toString());
 		tagWriter.writeStanzaAsync(packet);
 		if (packet instanceof AbstractAcknowledgeableStanza) {
 			AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/FileTransferHttp.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/FileTransferHttp.java
index 28f4f870..1c6544b4 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/FileTransferHttp.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/FileTransferHttp.java
@@ -1,8 +1,9 @@
 package de.thedevstack.conversationsplus.xmpp.filetransfer.http;
 
 /**
- * Created by steckbrief on 21.08.2016.
+ *
  */
 public interface FileTransferHttp {
     String NAMESPACE = "urn:xmpp:filetransfer:http";
+    String DEFAULT_MIME_TYPE = "application/octet-stream";
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteSlotRequestPacket.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteRequestPacket.java
index e389d851..d358a266 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteSlotRequestPacket.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteRequestPacket.java
@@ -7,19 +7,19 @@ import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 /**
  * Created by steckbrief on 21.08.2016.
  */
-public class DeleteSlotRequestPacket extends IqPacket {
+public class DeleteRequestPacket extends IqPacket {
     public static final String ELEMENT_NAME = "request";
     public static final String FILEURL_ELEMENT_NAME = "fileurl";
     private Element requestElement;
     private String fileurl;
 
-    private DeleteSlotRequestPacket() {
+    private DeleteRequestPacket() {
         super(TYPE.GET);
-        this.requestElement = super.addChild(DeleteSlotRequestPacket.ELEMENT_NAME, FileTransferHttp.NAMESPACE);
+        this.requestElement = super.addChild(DeleteRequestPacket.ELEMENT_NAME, FileTransferHttp.NAMESPACE);
         this.requestElement.setAttribute("type", "delete");
     }
 
-    public DeleteSlotRequestPacket(String fileurl) {
+    public DeleteRequestPacket(String fileurl) {
         this();
         this.setFileURL(fileurl);
     }
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteSlotPacketParser.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteSlotPacketParser.java
deleted file mode 100644
index 7c011449..00000000
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeleteSlotPacketParser.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete;
-
-import de.thedevstack.conversationsplus.xml.Element;
-import de.thedevstack.conversationsplus.xmpp.IqPacketParser;
-import de.thedevstack.conversationsplus.xmpp.exceptions.UnexpectedIqPacketTypeException;
-import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
-import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
-import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
-import de.thedevstack.conversationsplus.xmpp.utils.ErrorIqPacketExceptionHelper;
-
-/**
- * Created by steckbrief on 21.08.2016.
- */
-public class DeleteSlotPacketParser extends IqPacketParser {
-    public static String parseDeleteToken(IqPacket packet) throws XmppException {
-        String deletetoken = null;
-        if (packet.getType() == IqPacket.TYPE.RESULT) {
-            Element slot = findRequiredChild(packet, "slot", FileTransferHttp.NAMESPACE);
-
-            deletetoken = findRequiredChildContent(slot, "deletetoken");
-        } else if (packet.getType() == IqPacket.TYPE.ERROR) {
-            ErrorIqPacketExceptionHelper.throwIqErrorException(packet);
-        } else {
-            throw new UnexpectedIqPacketTypeException(packet, packet.getType(), IqPacket.TYPE.RESULT, IqPacket.TYPE.ERROR);
-        }
-
-        return deletetoken;
-    }
-}
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeletedPacketParser.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeletedPacketParser.java
new file mode 100644
index 00000000..df17a997
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/DeletedPacketParser.java
@@ -0,0 +1,43 @@
+package de.thedevstack.conversationsplus.xmpp.filetransfer.http.delete;
+
+import de.thedevstack.conversationsplus.xml.Element;
+import de.thedevstack.conversationsplus.xmpp.IqPacketParser;
+import de.thedevstack.conversationsplus.xmpp.exceptions.UnexpectedIqPacketTypeException;
+import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+import de.thedevstack.conversationsplus.xmpp.utils.ErrorIqPacketExceptionHelper;
+
+/**
+ * IqPacketParser to parse the response of a remote file delete request.
+ * This parser parses a IqPacket according to the specification 'filetransfer for XMPP over http".
+ */
+public class DeletedPacketParser extends IqPacketParser {
+    /**
+     * Parses an IqPacket.
+     * <pre>
+     * <iq from='montague.tld'
+     *     id='delete-file_002'
+     *     to='romeo@montague.tld/garden'
+     *     type='result'>
+     *   <deleted xmlns='urn:xmpp:filetransfer:http'/>
+     * </iq>
+     * </pre>
+     * @param packet the packet to parse
+     * @return <code>true</code> if the result packet contains a deleted element of namespace <code>urn:xmpp:filetransfer:http</code>
+     * @throws XmppException in case of IqPacket type error or {@link UnexpectedIqPacketTypeException} in case of an unexpected IqPacket type.
+     */
+    public static boolean parseDeleteToken(IqPacket packet) throws XmppException {
+        boolean successfullyDeleted = false;
+        if (packet.getType() == IqPacket.TYPE.RESULT) {
+            Element deletedElement = findRequiredChild(packet, "deleted", FileTransferHttp.NAMESPACE);
+            successfullyDeleted = null != deletedElement;
+        } else if (packet.getType() == IqPacket.TYPE.ERROR) {
+            ErrorIqPacketExceptionHelper.throwIqErrorException(packet);
+        } else {
+            throw new UnexpectedIqPacketTypeException(packet, packet.getType(), IqPacket.TYPE.RESULT, IqPacket.TYPE.ERROR);
+        }
+
+        return successfullyDeleted;
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/FileTransferHttpDeleteSlotRequestPacketGenerator.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/FileTransferHttpDeleteRequestPacketGenerator.java
index ac7de74e..88ad5d5a 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/FileTransferHttpDeleteSlotRequestPacketGenerator.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/delete/FileTransferHttpDeleteRequestPacketGenerator.java
@@ -6,7 +6,7 @@ import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 /**
  * Created by steckbrief on 21.08.2016.
  */
-public final class FileTransferHttpDeleteSlotRequestPacketGenerator {
+public final class FileTransferHttpDeleteRequestPacketGenerator {
     /**
      * Generates the IqPacket to request a slot to delete a file previously uploaded via http upload.
      * The attributes from and id are not set in here - this is added while sending the packet.
@@ -25,7 +25,7 @@ public final class FileTransferHttpDeleteSlotRequestPacketGenerator {
      * @return the IqPacket
      */
     public static IqPacket generate(Jid host, String fileurl) {
-        DeleteSlotRequestPacket packet = new DeleteSlotRequestPacket(fileurl);
+        DeleteRequestPacket packet = new DeleteRequestPacket(fileurl);
         packet.setTo(host);
         return packet;
     }
@@ -33,7 +33,7 @@ public final class FileTransferHttpDeleteSlotRequestPacketGenerator {
     /**
      * Utility class - avoid instantiation
      */
-    private FileTransferHttpDeleteSlotRequestPacketGenerator() {
+    private FileTransferHttpDeleteRequestPacketGenerator() {
         // Helper class - avoid instantiation
     }
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/FileTransferHttpUploadSlotRequestPacket.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/FileTransferHttpUploadSlotRequestPacket.java
new file mode 100644
index 00000000..2d7ed1c7
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/FileTransferHttpUploadSlotRequestPacket.java
@@ -0,0 +1,53 @@
+package de.thedevstack.conversationsplus.xmpp.filetransfer.http.upload;
+
+import de.thedevstack.conversationsplus.xml.Element;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+
+/**
+ *
+ */
+public class FileTransferHttpUploadSlotRequestPacket extends IqPacket {
+    public static final String ELEMENT_NAME = "request";
+    public static final String FILENAME_ELEMENT_NAME = "filename";
+    public static final String FILESIZE_ELEMENT_NAME = "size";
+    public static final String MIME_ELEMENT_NAME = "content-type";
+    private static final String RECIPIENT_ATTRIBUTE_NAME = "recipient";
+    private Element requestElement;
+    private String filename;
+    private long filesize;
+    private String mime;
+
+    public FileTransferHttpUploadSlotRequestPacket(String recipient, String filename, long filesize, String mime) {
+        super(TYPE.GET);
+        this.requestElement = super.addChild(FileTransferHttpUploadSlotRequestPacket.ELEMENT_NAME, FileTransferHttp.NAMESPACE);
+        this.requestElement.setAttribute(RECIPIENT_ATTRIBUTE_NAME, recipient);
+        this.setFilename(filename);
+        this.setFilesize(filesize);
+        this.setMime(mime);
+    }
+
+    public void setFilename(String filename) {
+        if (null == filename || filename.isEmpty()) {
+            throw new IllegalArgumentException("filename must not be null or empty.");
+        }
+        this.filename = filename;
+        this.requestElement.addChild(FILENAME_ELEMENT_NAME).setContent(filename);
+    }
+
+    public void setFilesize(long filesize) {
+        if (0 >= filesize) {
+            throw new IllegalArgumentException("filesize must not be null or empty.");
+        }
+        this.filesize = filesize;
+        this.requestElement.addChild(FILESIZE_ELEMENT_NAME).setContent(String.valueOf(filesize));
+    }
+
+    public void setMime(String mime) {
+        if (null == mime || mime.isEmpty()) {
+            mime = FileTransferHttp.DEFAULT_MIME_TYPE;
+        }
+        this.mime = mime;
+        this.requestElement.addChild(MIME_ELEMENT_NAME).setContent(mime);
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
index 4b0a956c..db455b7a 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadRequestSlotPacketGenerator.java
@@ -1,5 +1,7 @@
 package de.thedevstack.conversationsplus.xmpp.filetransfer.http.upload;
 
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
 import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 
@@ -24,17 +26,38 @@ public final class HttpUploadRequestSlotPacketGenerator {
      *   </request>
      * </iq>
      * </pre>
-     * @param host the jid of the host to request a slot from
+     * @param account the account requesting a slot
      * @param filename the filename of the file which will be transferred
      * @param filesize the filesize of the file which will be transferred
      * @param mime the mime type of the file which will be transferred - <code>optional</code> and therefore nullable
      * @return the IqPacket
      */
-    public static IqPacket generate(Jid host, String filename, long filesize, String mime) {
-        SlotRequestPacket packet = new SlotRequestPacket(filename, filesize);
-        packet.setTo(host);
-        packet.setMime((mime == null || mime.isEmpty()) ? HttpUpload.DEFAULT_MIME_TYPE : mime);
-        return packet;
+    public static IqPacket generate(Account account, Jid recipient, String filename, long filesize, String mime) {
+        String namespace = getNamespace(account);
+        Jid host = getHost(account, namespace);
+        IqPacket requestPacket;
+        switch (namespace) {
+            case HttpUpload.NAMESPACE:
+                requestPacket = new HttpUploadSlotRequestPacket(filename, filesize, mime);
+            break;
+            case FileTransferHttp.NAMESPACE:
+            default:
+                requestPacket = new FileTransferHttpUploadSlotRequestPacket(recipient.toString(), filename, filesize, mime);
+        }
+        requestPacket.setTo(host);
+        return requestPacket;
+    }
+
+    private static String getNamespace(Account account) {
+        if (null != account.getXmppConnection().findDiscoItemByFeature(FileTransferHttp.NAMESPACE)) {
+            return FileTransferHttp.NAMESPACE;
+        } else {
+            return HttpUpload.NAMESPACE;
+        }
+    }
+
+    private static Jid getHost(Account account, String namespace) {
+        return account.getXmppConnection().findDiscoItemByFeature(namespace);
     }
 
     /**
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotRequestPacket.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadSlotRequestPacket.java
index d0866508..93422d3f 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotRequestPacket.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/HttpUploadSlotRequestPacket.java
@@ -6,7 +6,7 @@ import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 /**
  *
  */
-public class SlotRequestPacket extends IqPacket {
+public class HttpUploadSlotRequestPacket extends IqPacket {
     public static final String ELEMENT_NAME = "request";
     public static final String FILENAME_ELEMENT_NAME = "filename";
     public static final String FILESIZE_ELEMENT_NAME = "size";
@@ -16,15 +16,16 @@ public class SlotRequestPacket extends IqPacket {
     private long filesize;
     private String mime;
 
-    private SlotRequestPacket() {
+    private HttpUploadSlotRequestPacket() {
         super(TYPE.GET);
-        this.requestElement = super.addChild(SlotRequestPacket.ELEMENT_NAME, HttpUpload.NAMESPACE);
+        this.requestElement = super.addChild(HttpUploadSlotRequestPacket.ELEMENT_NAME, HttpUpload.NAMESPACE);
     }
 
-    public SlotRequestPacket(String filename, long filesize) {
+    public HttpUploadSlotRequestPacket(String filename, long filesize, String mime) {
         this();
         this.setFilename(filename);
         this.setFilesize(filesize);
+        this.setMime(mime);
     }
 
     public void setFilename(String filename) {
@@ -45,7 +46,7 @@ public class SlotRequestPacket extends IqPacket {
 
     public void setMime(String mime) {
         if (null == mime || mime.isEmpty()) {
-            throw new IllegalArgumentException("mime type must not be null or empty.");
+            mime = HttpUpload.DEFAULT_MIME_TYPE;
         }
         this.mime = mime;
         this.requestElement.addChild(MIME_ELEMENT_NAME).setContent(mime);
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotPacketParser.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotPacketParser.java
index 85d11b6b..e2d629e4 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotPacketParser.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/filetransfer/http/upload/SlotPacketParser.java
@@ -2,8 +2,10 @@ package de.thedevstack.conversationsplus.xmpp.filetransfer.http.upload;
 
 import de.thedevstack.conversationsplus.xml.Element;
 import de.thedevstack.conversationsplus.xmpp.IqPacketParser;
+import de.thedevstack.conversationsplus.xmpp.exceptions.MissingRequiredElementException;
 import de.thedevstack.conversationsplus.xmpp.exceptions.UnexpectedIqPacketTypeException;
 import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
+import de.thedevstack.conversationsplus.xmpp.filetransfer.http.FileTransferHttp;
 import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
 import de.thedevstack.conversationsplus.xmpp.utils.ErrorIqPacketExceptionHelper;
 
@@ -11,10 +13,18 @@ import de.thedevstack.conversationsplus.xmpp.utils.ErrorIqPacketExceptionHelper;
  *
  */
 public final class SlotPacketParser extends IqPacketParser {
+    private static final String SLOT_ELEMENT_NAME = "slot";
+
     public static HttpUploadSlot parseGetAndPutUrl(IqPacket packet) throws XmppException {
         HttpUploadSlot httpUploadSlot = null;
         if (packet.getType() == IqPacket.TYPE.RESULT) {
-            Element slot = findRequiredChild(packet, "slot", HttpUpload.NAMESPACE);
+            Element slot = findChild(packet, SLOT_ELEMENT_NAME, FileTransferHttp.NAMESPACE);
+            if (null == slot) {
+                slot = findChild(packet, SLOT_ELEMENT_NAME, HttpUpload.NAMESPACE);
+            }
+            if (null == slot) {
+                throw new MissingRequiredElementException(SLOT_ELEMENT_NAME, "neither " + FileTransferHttp.NAMESPACE + " nor " + HttpUpload.NAMESPACE, packet);
+            }
 
             String getUrl = findRequiredChildContent(slot, "get");
             String putUrl = findRequiredChildContent(slot, "put");
diff --git a/src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnection.java b/src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnection.java
index aa85430b..ea93fdb8 100644
--- a/src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnection.java
+++ b/src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnection.java
@@ -464,6 +464,8 @@ public class JingleConnection implements Transferable {
 				}
 			});
 
+		} else {
+            fail();
 		}
 	}