Develop Reference

How to accept an incoming audio SIP call using JAIN SIP Library?

It is my first time creating working with JAIN SIP. I have created Android SIP Client using JAIN SIP. I am able to get a notification of an incoming call and receive it but am not able to get the audio stream working. I guess the problem might be the way define the Session Description Protocol(SDP) for an audio stream.
Below is my acceptCall method:
public void acceptCall() throws IllegalStateException {
soundManager.setupAudioStream();
Request request = incomingRequest.getRequest();
remoteIP = SDPBuilder.getRemoteIP(incomingRequest.getRequest());
try {
Response response = messageFactory.createResponse(Response.OK, request);
response.addHeader(localContactHeader);
ContentTypeHeader contentTypeHeader = headerFactory.createContentTypeHeader("application", "sdp");
response.setContent(getSDPData().getBytes(), contentTypeHeader);
SipResponder responder = new SipResponder(sipProvider, incomingRequest, currentServerTransaction);
responder.execute(response);
} catch (Exception e) {
if (BuildConfig.DEBUG) e.printStackTrace();
direction = CallDirection.NONE;
notifySessionFailed("couldn't establish call");
}
}
Here is my method that returns SDP Data:
private String getSDPData()
{
return "v=0\r\n"
+ "o=4855 13760799956958020 13760799956958020"
+ " IN IP4 " + localIP + "\r\n"
+ "s=mysession session\r\n"
+ "c=IN IP4 "
+ localIP + "\r\n" + "t=0 0\r\n"
+ "m=audio " + String.valueOf(port)
+ " RTP/AVP 0 4 18\r\n"
+ "a=rtpmap:0 PCMU/8000\r\n"
+ "a=rtpmap:4 G723/8000\r\n"
+ "a=rtpmap:18 G729A/8000\r\n" + "a=ptime:20\r\n";
}
Lastly my SIP Responder class:
public class SipResponder extends AsyncTask<Response, String, ServerTransaction> {
private static final String TAG = "BACKGROUND";
private SipProvider sipProvider;
private RequestEvent requestEvent;
private ServerTransaction transaction;
public SipResponder(SipProvider provider, RequestEvent event, ServerTransaction transaction) {
sipProvider = provider;
requestEvent = event;
this.transaction = transaction;
}
#Override
protected ServerTransaction doInBackground(Response... responses) {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
Request request = requestEvent.getRequest();
Response response = responses[0];
try {
if (transaction == null)
transaction = requestEvent.getServerTransaction();
if (transaction == null) {
transaction = sipProvider.getNewServerTransaction(request);
}
transaction.sendResponse(response);
return transaction;
} catch (TransactionAlreadyExistsException e) {
Log.e(TAG, "that race condition. UGH");
e.printStackTrace();
return null;
} catch (Exception e) {
Log.e(TAG, "the response failed. UGH");
e.printStackTrace();
return null;
}
}}
It has been a struggle for a while now. Kindly help.

Unable to connect android signalr with server

I want to connect SignalR android client with server. I have search too much but cant get solution of my problem i am new to signalR so please anyone tell me the solution. I am getting following exception
java.util.concurrent.ExecutionException: microsoft.aspnet.signalr.client.transport.NegotiationException: There was a problem in the negotiation with the server
Here is my code
Server Side
aspx file
var IWannaChat = $.connection.myChatHub;
$.connection.hub.start().done(function () {
console.log("id : %o", $.connection.hub.id);
document.getElementById("connectionid").innerHTML =
"Name: " + $('#displayname').val() +
"<br/> Connection ID: " + $.connection.hub.id;
}
.cs file
[HubName("myChatHub")]
public class LetsChat : Hub
{
public override Task OnConnected()
{
System.Diagnostics.Debug.WriteLine("Connected");
return base.OnConnected();
}
public override Task OnDisconnected()
{
System.Diagnostics.Debug.WriteLine("Disconnected");
return base.OnDisconnected();
}
Android code
Platform.loadPlatformComponent(new AndroidPlatformComponent());
String serverUrl = "http://192.168.100.72/Chat.aspx";
mHubConnection = new HubConnection(serverUrl);
String SERVER_HUB_CHAT = "myChatHub";
mHubProxy = mHubConnection.createHubProxy(SERVER_HUB_CHAT);
ClientTransport clientTransport = new ServerSentEventsTransport(mHubConnection.getLogger());
SignalRFuture<Void> signalRFuture = mHubConnection.start(clientTransport);
try {
signalRFuture.get();
} catch (InterruptedException | ExecutionException e) {
Log.e("SimpleSignalR Exception", e.toString());
return;
}
mHubConnection.connected(new Runnable() {
#Override
public void run() {
Global.displayLog("SignalR_connection Connected connection_Id " + mHubConnection.getConnectionId() + " ConnectionToken" +
mHubConnection.getConnectionToken());
// Toast.makeText(SignalRService.this,"Connected",Toast.LENGTH_SHORT).show();
}
});
Please help me what i am doing wrong on both sides

Sending Email in Android using JavaMail API without using mailing APP

Sending Email in Android using JavaMail API without using the default/built-in app
Using this tutorial, I've loaded up the code into a sample android project and imported the libraries. Changed the parameters in the lines:
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
try {
GMailSender sender = new GMailSender("sender#gmail.com", "sender_password");
sender.sendMail("This is Subject", "This is Body", "sender#gmail.com", "recipient#gmail.com");
} catch (Exception e) {
Log.e("SendMail", e.getMessage(), e);
}
}
});
Wanted to test it out and in this code, the try block of code gets executed successfully when I press the button, but I don't receive the mail, nor do I get any errors. Since there's no readme or any guidelines as to how to use this code, I have no choice but to ask what I'm doing wrong.
Just to clear the confusion, I've put the senders email instead of sender#gmail.com, same goes for password and recipient#gmail.com.
I've also added the INTERNET permission to the manifest.

If you want to use mailgun instead you can do it like this:
public void sendEmailInBackground(final String subject, final String body, final String... toAddress) {
AsyncTask task = new AsyncTask() {
#Override
protected Object doInBackground(Object[] objects) {
String hostname = "smpt.mailgun.org";
int port = 25;
String login = "login";
String password = "password";
String from = "from#example.com";
AuthenticatingSMTPClient client = null;
try {
client = new AuthenticatingSMTPClient();
// optionally set a timeout to have a faster feedback on errors
client.setDefaultTimeout(10 * 1000);
// you connect to the SMTP server
client.connect(hostname, port);
// you say helo and you specify the host you are connecting from, could be anything
client.ehlo("localhost");
// if your host accepts STARTTLS, we're good everything will be encrypted, otherwise we're done here
if (client.execTLS()) {
client.auth(AuthenticatingSMTPClient.AUTH_METHOD.LOGIN, login, password);
checkReply(client);
client.setSender(from);
checkReply(client);
String address = "";
if (toAddress != null) {
for (String to : toAddress) {
if(to != null && to.length() > 0) {
client.addRecipient(to);
if (address.length() == 0) {
address += ",";
}
address += to;
}
}
}
if(address.length() == 0){
logger.warning("No address specified for mail message");
return null;
}
checkReply(client);
Writer writer = client.sendMessageData();
if (writer != null) {
SimpleSMTPHeader header = new SimpleSMTPHeader(from, address, subject);
writer.write(header.toString());
writer.write(body);
writer.close();
if (!client.completePendingCommand()) {// failure
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("STARTTLS was not accepted " + client.getReply() + client.getReplyString());
}
} catch (IOException | NoSuchAlgorithmException | InvalidKeyException | InvalidKeySpecException e) {
logger.severe("Error sending email",e);
} finally {
if (client != null) {
try {
client.logout();
client.disconnect();
} catch (Exception e) {
logger.warning("Error closing email client: " + e.getMessage());
}
}
}
return null;
}
};
task.execute();
}
private static void checkReply(SMTPClient sc) throws IOException {
if (SMTPReply.isNegativeTransient(sc.getReplyCode())) {
throw new IOException("Transient SMTP error " + sc.getReplyString());
} else if (SMTPReply.isNegativePermanent(sc.getReplyCode())) {
throw new IOException("Permanent SMTP error " + sc.getReplyString());
}
}

getting "XMPPException$XMPPErrorException: XMPPError: service-unavailable - cancel" while creating group using XMPP (4.1.3)

I am facing issue while creating chat group using XMPP(4.1.3).
My code is
try{
// Get the MultiUserChatManager
MultiUserChatManager manager = MultiUserChatManager.getInstanceFor(ClosrrService.xmppConnection);
Log.e("Connection : ", ClosrrService.xmppConnection.toString());
// Get a MultiUserChat using MultiUserChatManager
MultiUserChat muc = manager.getMultiUserChat("dayaroom#conference."+Constants.HOST);
// Create the room and send an empty configuration form to make this an instant room
muc.create("testbotdaya");
muc.sendConfigurationForm(new Form(DataForm.Type.submit));
}catch (Exception e) {
e.printStackTrace();
}
In above code I am getting exception on muc.create("testbotdaya"); and exception is
org.jivesoftware.smack.XMPPException$XMPPErrorException: XMPPError: service-unavailable - cancel
W/System.err﹕ at org.jivesoftware.smack.PacketCollector.nextResultOrThrow(PacketCollector.java:232)
W/System.err﹕ at org.jivesoftware.smackx.muc.MultiUserChat.enter(MultiUserChat.java:311)
W/System.err﹕ at org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:400)
at org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:376)
W/System.err﹕ at org.jivesoftware.smackx.muc.MultiUserChat.create(MultiUserChat.java:354)
W/System.err﹕ at com.rappier.closrr.chat.grpupchat.CreateGroupActivity.createGroup(CreateGroupActivity.java:82)
W/System.err﹕ at com.rappier.closrr.chat.grpupchat.CreateGroupActivity.onClick(CreateGroupActivity.java:64)
Please help me. Thanking in advance.

I also get the same issue but after lots of research, I found the solution.
Here is create Group method which I'm using, I check your code, please compare with my code so you can find your mistake.
public boolean createGroup() {
try {
String myJid = "MY_JID";
String grp_name = "TestGroup";
//creating unique group id using
String groupId = grp_name.toLowerCase() + "_" + String.valueOf(System.currentTimeMillis() / 1000L);
//this list for send invitations if you need.
ArrayList<String> friendList = new ArrayList<>();
friendList.add("friendNameJID1");
friendList.add("friendNameJID2");
friendList.add("friendNameJID3");
if (TextUtils.isEmpty(grp_name) || TextUtils.isEmpty(groupId)) {
return false;
}
// Create the XMPP address (JID) of the MUC.
EntityBareJid mucJid = JidCreate.entityBareFrom(groupId + "#conference.localhost");//groupId#conference.domain name
// Create the nickname.
Resourcepart nickname = Resourcepart.from(myJid);
// Get the MultiUserChatManager
MultiUserChatManager mucChatManager = MultiUserChatManager.getInstanceFor(MyApplication.connection);
// Get a MultiUserChat using MultiUserChatManager
MultiUserChat mucChat = mucChatManager.getMultiUserChat(mucJid);
try {
// Create the room
mucChat.create(nickname);
Form form = mucChat.getConfigurationForm();
Form submitForm = form.createAnswerForm();
for (FormField formField : submitForm.getFields()) {
if (!FormField.Type.hidden.equals(formField.getType())
&& formField.getVariable() != null) {
submitForm.setDefaultAnswer(formField.getVariable());
}
}
submitForm.setAnswer("muc#roomconfig_publicroom", true);
submitForm.setAnswer("muc#roomconfig_persistentroom", true);
submitForm.setAnswer("muc#roomconfig_roomname", grp_name);
mucChat.sendConfigurationForm(submitForm);
mucChat.join(nickname);
for (String names : friendList) {
Message message = new Message();
// message.setType(Type.normal); //optional
message.setSubject(Constants.GROUP_CHAT_MSG_MODE);
message.setBody(Constants.GROUP_GREETINGS);
EntityBareJid eJId = JidCreate.entityBareFrom(names + "#" + Constants.XMPP_DOMAIN);
mucChat.invite(message, eJId, groupId);
}
return true;
} catch (MultiUserChatException.MissingMucCreationAcknowledgeException e) {
Log.d(TAG, "Group is already there " + Arrays.toString(e.getStackTrace()));
return false;
} catch (MultiUserChatException.MucAlreadyJoinedException e) {
Log.d(TAG, "Group Error : " + e.getMessage());
return false;
}
} catch (SmackException.NoResponseException | XMPPException.XMPPErrorException | InterruptedException | XmppStringprepException | MultiUserChatException.NotAMucServiceException e) {
Log.d(TAG, "Group Error : " + e.getMessage());
return false;
} catch (SmackException.NotConnectedException e) {
Log.d(TAG, "Group Error : " + e.getMessage());
return false;
}
}

Azure mobile service for android query table

I'm using azure sdk for android and follow the tutorial https://azure.microsoft.com/en-us/documentation/articles/mobile-services-dotnet-backend-android-get-started-data/.
When I'm trying to connect and insert data to mobile service table all is ok, but when I query the table in activity my app gets stuck, though there are only several entries in the table and execute method successfully returns Future.
public static MobileServiceClient mClient;
public static void connect(Context context) {
try {
mClient = new MobileServiceClient(storageLink, key, context);
} catch (MalformedURLException e) {
Log.e("AzureService.connect", "Storage access failed" + storageLink);
}
}
public static InstallationData get(final String deviceId) {
MobileServiceTable<InstallationData> table= mClient.getTable(InstallationData.class);
final MobileServiceList<InstallationData> result;
try {
result = table.where().field("deviceid").eq(deviceId).execute().get();
for (InstallationData item : result) {
return item;
}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
return null;
}
public static void store(final InstallationData item) {
mClient.getTable(InstallationData.class).insert(item, new TableOperationCallback<InstallationData>() {
public void onCompleted(InstallationData entity, Exception exception, ServiceFilterResponse response) {
if (exception == null) {
Log.d("AzureService.store()", "Data about " + item.getDeviceid() + "" + "is successfully updated");
} else {
exception.printStackTrace();
Log.e("AzureService.store()", "Data about " + item.getDeviceid() + "" + "is failed to update");
}
}
});
}
Thank you in advance!