Twilio SDK voip call Invalid Uri - ios

Question

When I tried to make a call "name" to "name" via twilio I had this error :
pjsua_call.c .Dialog creation failed: Invalid URI (PJSIP_EINVALIDURI)
As I followed the twilio tutorial I have no idea why this error happen.
Any clue ?
Here the way I got the token (should be ok)
- (void)getTwilioToken{
NSString *urlString = [NSString stringWithFormat:#"http://foo.herokuapp.com/token?client=%#", [[[Utils getUserCredential] componentsSeparatedByString:#"|"] objectAtIndex:1]];
NSURL *url = [NSURL URLWithString:urlString];
NSError *error = nil;
NSString *token = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:&error];
if(token == nil){
NSLog(#"Error retrieving token: %#", [error localizedDescription]);
} else {
_phone = [[TCDevice alloc] initWithCapabilityToken:token delegate:self];
}
}
Here the code used to make the call :
-(IBAction)callResponder:(id)sender{
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
NSString *responderEmail = [[self.responders objectAtIndex:indexPath.row] email];
NSDictionary *params = #{#"To": responderEmail};
//check if we can make an outgoing call and attempt a connection
NSNumber* hasOutgoing = [_phone.capabilities objectForKey:TCDeviceCapabilityOutgoingKey];
if ( [hasOutgoing boolValue] == YES ){
//Disconnect if we've already got a connection in progress
if(_connection){
[_connection disconnect];
}
_connection = [_phone connect:params delegate:self];
[_connection retain];
}
}

Answer 1

I also ran into this same issue myself. The problem pertained to how I set permissions for the Twilio token (using their Javascript API):
var capability = new twilio.Capability(twilioAccountSid, twilioAuthToken);
capability.allowClientOutgoing(twilioAppSid);
capability.allowClientIncoming(); // this is the problematic line
After I removed the (apparently incorrect) incoming permission setting line my device completed the call perfectly.