pjsip connect to asterisk trouble - ios

Question

I have added pjsip lib through cocoapods from here https://github.com/chebur/pjsip.
No I'm trying to connect to sip server using this pjsip example.
Here is my code:
func startPjsip() {
var status: pj_status_t
// Create pjsua first
status = pjsua_create()
if status != Int32(PJ_SUCCESS.rawValue) {
pjsuaError("Error in pjsua_create()", status: status)
}
// Init Pjsua
var config = pjsua_config()
pjsua_config_default(&config)
// on reg state
config.cb.on_reg_state = { (accountId: pjsua_acc_id) in
p("on_reg_state", accountId)
}
// Init the logging config structure
var logConfig = pjsua_logging_config()
pjsua_logging_config_default(&logConfig)
logConfig.console_level = 4
// Init the pjsua
status = pjsua_init(&config, &logConfig, nil)
if status != Int32(PJ_SUCCESS.rawValue) {
pjsuaError("Error in pjsua_init()", status: status)
}
// Adding UDP transport
// Init transport config structure
var udpTransportConfig = pjsua_transport_config()
pjsua_transport_config_default(&udpTransportConfig)
udpTransportConfig.port = 5060
status = pjsua_transport_create(PJSIP_TRANSPORT_UDP, &udpTransportConfig, nil)
if status != Int32(PJ_SUCCESS.rawValue) {
pjsuaError("Error in creating UDP transport", status: status)
}
// Initialization is done, now start pjsua
status = pjsua_start()
if status != Int32(PJ_SUCCESS.rawValue) {
pjsuaError("Error starting pjsua", status: status)
}
// Register the account on local sip server
var accountConfig = pjsua_acc_config()
pjsua_acc_config_default(&accountConfig)
// username
let username = "10001"
let domain = "voip01.interpreters.travel"
let userId = "sip:\(username)#\(domain)"
accountConfig.id = pj_str_t(ptr: stringToPointer(string: userId), slen: pj_ssize_t(userId.characters.count))
// uri
var uri = "sip:\(domain)"
accountConfig.reg_uri = pj_str_t(ptr: stringToPointer(string: uri), slen: pj_ssize_t(uri.characters.count))
accountConfig.cred_count = 1
accountConfig.cred_info.0.realm = pj_str_t(ptr: stringToPointer(string: "*"), slen: pj_ssize_t("*".characters.count))
let scheme = "digest"
accountConfig.cred_info.0.scheme = pj_str_t(ptr: stringToPointer(string: scheme), slen: pj_ssize_t(scheme.characters.count))
accountConfig.cred_info.0.data_type = Int32(PJSIP_CRED_DATA_PLAIN_PASSWD.rawValue)
let password = "10001"
accountConfig.cred_info.0.data = pj_str_t(ptr: stringToPointer(string: password), slen: pj_ssize_t(password.characters.count))
accountConfig.cred_info.0.username = pj_str_t(ptr: stringToPointer(string: username), slen: pj_ssize_t(username.characters.count))
var accountId = pjsua_acc_id()
status = pjsua_acc_add(&accountConfig, pj_bool_t(PJ_TRUE.rawValue), &accountId)
p(accountId)
if status != Int32(PJ_SUCCESS.rawValue) {
pjsuaError("Error adding account", status: status)
}
}
func pjsuaError(_ message: String, status: pj_status_t) {
let url = NSURL(fileURLWithPath: #file)
let fileName: String = url.lastPathComponent == nil ? #file : url.lastPathComponent!
pjsua_perror(fileName, message, status)
pjsua_destroy()
}
func stringToPointer(string: String) -> UnsafeMutablePointer<Int8> {
let cs = (string as NSString).utf8String
return UnsafeMutablePointer<Int8>(mutating: cs!)
}
When I run application I've got request sending to sip server, it returns 401 Unauthorized (log is here), which seems to be fine according to this doc.
After that pjsip send another request and sip server return 403 Forbidden, here is the log.
I've asked my server guy what is the problem and he said that he used the same credentials with JsSIP lib for browser client and everything works fine for him. Here is the log he gave to me.
I have looked at his log and see difference in these lines:
mine - Via: SIP/2.0/UDP
his - Via: SIP/2.0/WSS
So seems that I'm using wrong transport protocol. But I don't know how to set pjsip to use wss protocol.
Can someone help me if you have the same issues. Or what I need to read/try to achieve my goal.
UPDATE:
I have added Starscream, and got it working to connect to wss:// url. Here is the code:
var socket: WebSocket!
override func viewDidLoad() {
super.viewDidLoad()
socket = WebSocket(url: URL(string: "wss://voip01.interpreters.travel:4443")!)
socket.delegate = self
socket.pongDelegate = self
socket.headers["Sec-WebSocket-Protocol"] = "sip"
socket.connect()
}
func websocketDidConnect(socket: WebSocket) {
print("websocketDidConnect")
print(socket)
}
It says "websocketDidConnect". But now I need to send SIP REGISTER through this wss transport protocol. I can't find any information how to setup pjsip to use wss.
I have tried to change pjsua_transport_create with PJSIP_TRANSPORT_TCP or TLS but no success.
Please, can someone help me where to find information about pjsip + websocket support.