diff --git a/client/Stream/Stream.gd b/client/Stream/Stream.gd
index 109b456..4cfe7b6 100644
--- a/client/Stream/Stream.gd
+++ b/client/Stream/Stream.gd
@@ -28,14 +28,31 @@ enum StreamState {
 }
 var stream_status = StreamState.END
 
-@export var server_ip:String = "localhost":
-	set = set_server_ip, get = get_server_ip
+enum XMPPState {
+	NONE, # Nothing is configured
+	TRY_CONNECT_SERVER, # Try to connect to server
+	CONNECTED_SERVER, # Confirmed we are connected to server
+	INTIALIZE, # Initialize first connection with server
+	INTIALIZED, # when initialize is finished
+	FEATURE_SERVER, # We received Feature (TLS ?)
+	START_TLS, # We start TLS
+	WAIT_TLS, # Wait TLS Done
+	MISSING_TLS, # Missing feature TLS -> wait 30min and retry
+	STARTED_TLS, # TLS connection is done
+	AUTHENTICATE_STEP_1, # Launch authenticate
+	AUTHENTICATE_STEP_2, # Launch authenticate
+	AUTHENTICATE_STEP_3, # Launch authenticate
+	AUTHENTICATED, # We finished authenticate
+}
 
-func set_server_ip(value:String):
-	server_ip = value
+@export var server_xmpp_name:String = "localhost":
+	set = set_server_xmpp_name, get = get_server_xmpp_name
+
+func set_server_xmpp_name(value:String):
+	server_xmpp_name = value
 	
-func get_server_ip() -> String:
-	return server_ip
+func get_server_xmpp_name() -> String:
+	return server_xmpp_name
 
 @export var port_number:int = 5222:
 	set = set_port_number, get = get_port_number
@@ -79,28 +96,321 @@ func get_locale() -> String:
 	set(value):
 		xmppclient = value
 
+const MAX_WAIT_CONNECTING:float = 60.0
+const MAX_WAIT_MISSING_TLS:float = 1800.0
+
 var try_connect:int = 0
-var count_connecting_time:float = 0
+var count_connecting_time:float = MAX_WAIT_CONNECTING
 var partial_stanza:String = ""
 var tcp_peer:StreamPeerTCP = StreamPeerTCP.new()
 var ssl_peer:StreamPeerTLS = StreamPeerTLS.new()
 var tgt_peer = null
 var status:StreamState = StreamState.END
+var xmpp_state = XMPPState.NONE
+var authentication_methods = []
+
+func reinit_stream():
+	if ssl_peer != null:
+		ssl_peer.disconnect_from_stream()
+	else:
+		ssl_peer = StreamPeerTLS.new()
+	if tcp_peer != null:
+		tcp_peer.disconnect_from_host()
+	else:
+		tcp_peer = StreamPeerTCP.new()
+	tgt_peer = tcp_peer
+	start_stream()
+	stream_status = self.StreamState.START
 
 
-func _init():
+func _init() -> void:
 	var language = OS.get_locale()
 	set_locale(language)
 	tgt_peer = tcp_peer
+	# reinit_stream()
 
-func _process(delta):
-	#Global.msg_info("TCP:%d", [tcp_peer.get_status()])
-	print(server_ip, ":", port_number, " / get_status:" , tcp_peer.get_status(), " / count_connecting_time:", count_connecting_time, " / stream_status:", stream_status)
-#	if tcp_peer.get_status() == StreamPeerTCP.STATUS_NONE and stream_status == self.StreamState.TLS:
-#		#negotiate_tls()
-#		print("negotiate_tls")
-#		pass
-	if (tgt_peer.get_status() == StreamPeerTCP.STATUS_CONNECTED) :
+
+func _process(delta) -> void:
+	print(server_xmpp_name, ":", port_number, " / get_status:" , tcp_peer.get_status(), " / count_connecting_time:", count_connecting_time, " / stream_status:", stream_status, " / xmpp_state:", XMPPState.keys()[xmpp_state])
+	if xmppclient == false:
+		return
+	# Wait MAX_WAIT_MISSING_TLS (s) if server can't negociate with TLS
+	if xmpp_state == XMPPState.MISSING_TLS:
+		if count_connecting_time >= MAX_WAIT_MISSING_TLS:
+			xmpp_state = XMPPState.NONE
+		else:
+			count_connecting_time += delta
+	elif xmpp_state == XMPPState.NONE:
+		if count_connecting_time >= MAX_WAIT_CONNECTING:
+			xmpp_state = XMPPState.TRY_CONNECT_SERVER
+			if ssl_peer.get_status() != StreamPeerTLS.STATUS_DISCONNECTED:
+				ssl_peer.disconnect_from_stream()
+			if tcp_peer.get_status() != StreamPeerTCP.STATUS_NONE:
+				tcp_peer.disconnect_from_host()
+		else:
+			count_connecting_time += delta
+	elif xmpp_state == XMPPState.TRY_CONNECT_SERVER:
+		if tcp_peer.get_status() == StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.CONNECTED_SERVER
+			count_connecting_time = MAX_WAIT_CONNECTING
+		elif count_connecting_time >= MAX_WAIT_CONNECTING:
+			var res = tcp_peer.connect_to_host(server_xmpp_name, port_number)
+			if res == OK:
+				send_msg_debug.emit("Send connect_to_host : ok")
+				#stream_status = self.StreamState.END
+				#xmpp_state = XMPPState.CONNECTED_SERVER
+				count_connecting_time = 0
+			else:
+				send_msg_error.emit("Error to connect to XMPP server (return:%d)" % res)
+				xmpp_state = XMPPState.NONE
+				count_connecting_time = 0
+		else:
+			if (tcp_peer.has_method("poll")):
+				tcp_peer.poll()
+			count_connecting_time += delta
+	elif xmpp_state == XMPPState.CONNECTED_SERVER:
+		if tcp_peer.get_status() != StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if count_connecting_time >= MAX_WAIT_CONNECTING:
+			count_connecting_time = 0
+			send_msg_debug.emit("send_tcp_initialize_xmpp")
+			send_tcp_initialize_xmpp()
+		else:
+			count_connecting_time += delta
+		if (tcp_peer.has_method("poll")):
+			tcp_peer.poll()
+		if tcp_peer.get_available_bytes()>0:
+			var response = tcp_peer.get_string(tcp_peer.get_available_bytes())
+			send_msg_debug.emit("Stream: response: " + response)
+			response = remove_stream_header(response)
+			if not analyze_error(response):
+				if analyze_feature_starttls(response):
+					xmpp_state = XMPPState.START_TLS
+				else:
+					count_connecting_time = 0
+					xmpp_state = XMPPState.MISSING_TLS
+	elif xmpp_state == XMPPState.START_TLS:
+		if tcp_peer.get_status() != StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if count_connecting_time >= MAX_WAIT_CONNECTING:
+			count_connecting_time = 0
+			xmpp_state = XMPPState.NONE
+		else:
+			count_connecting_time += delta
+		if (tcp_peer.has_method("poll")):
+			tcp_peer.poll()
+		if tcp_peer.get_available_bytes()>0:
+			var response = tcp_peer.get_string(tcp_peer.get_available_bytes())
+			send_msg_debug.emit("Stream: response: " + response)
+			response = remove_stream_header(response)
+			if response.begins_with("<proceed"):
+				send_msg_debug.emit("Stream: gotten go ahead for ssl")
+				var options:TLSOptions = TLSOptions.client_unsafe()
+				var ssl_succes = ssl_peer.connect_to_stream(tcp_peer, "localhost", options)
+				if ssl_succes == OK:
+					send_msg_debug.emit("Stream: switched to SSL!")
+					xmpp_state = XMPPState.WAIT_TLS
+				else:
+					count_connecting_time = 0
+					xmpp_state = XMPPState.MISSING_TLS
+			else:
+				send_msg_error.emit(tr("TlS negotiation failed."))
+				count_connecting_time = 0
+				xmpp_state = XMPPState.MISSING_TLS
+	elif xmpp_state == XMPPState.WAIT_TLS:
+		if tcp_peer.get_status() != StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if ssl_peer.get_status() == StreamPeerTLS.STATUS_CONNECTED:
+			xmpp_state = XMPPState.STARTED_TLS
+			count_connecting_time = MAX_WAIT_CONNECTING
+		elif ssl_peer.get_status() == StreamPeerTLS.STATUS_HANDSHAKING:
+			ssl_peer.poll()
+			if count_connecting_time >= MAX_WAIT_CONNECTING:
+				count_connecting_time = 0
+				xmpp_state = XMPPState.MISSING_TLS
+			else:
+				count_connecting_time += delta
+		else:
+			count_connecting_time = 0
+			xmpp_state = XMPPState.MISSING_TLS
+	elif xmpp_state == XMPPState.STARTED_TLS:
+		if tcp_peer.get_status() != StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if ssl_peer.get_status() != StreamPeerTLS.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if count_connecting_time >= MAX_WAIT_CONNECTING:
+			count_connecting_time = 0
+			send_msg_debug.emit("send_ssl_initialize_xmpp")
+			send_ssl_initialize_xmpp()
+		else:
+			count_connecting_time += delta
+		if (ssl_peer.has_method("poll")):
+			ssl_peer.poll()
+		if ssl_peer.get_available_bytes()>0:
+			var response = ssl_peer.get_string(ssl_peer.get_available_bytes())
+			send_msg_debug.emit("Stream: response: " + response)
+			response = remove_stream_header(response)
+			if not analyze_error(response):
+				if analyze_feature_mechanisms(response):
+					if authentication_methods.size() > 0:
+						count_connecting_time = MAX_WAIT_CONNECTING
+						xmpp_state = XMPPState.AUTHENTICATE_STEP_1
+					#send_msg_debug.emit("AUTHENTICATE_STEP_1")
+#				elif response.begins_with("<success"):
+#					stream_status = self.StreamState.STANZA
+	if xmpp_state == XMPPState.AUTHENTICATE_STEP_1:
+		if tcp_peer.get_status() != StreamPeerTCP.STATUS_CONNECTED:
+			xmpp_state = XMPPState.NONE
+			count_connecting_time = 0
+			return
+		if count_connecting_time >= MAX_WAIT_CONNECTING:
+			count_connecting_time = 0
+			negotiate_ssl_sasl(authentication_methods)
+		else:
+			count_connecting_time += delta
+		if (ssl_peer.has_method("poll")):
+			ssl_peer.poll()
+		if ssl_peer.get_available_bytes()>0:
+			var response = ssl_peer.get_string(ssl_peer.get_available_bytes())
+			send_msg_debug.emit("Stream: response: " + response)
+			response = remove_stream_header(response)
+			if response.begins_with("<success"):
+				count_connecting_time = 0
+				xmpp_state = XMPPState.AUTHENTICATED
+
+
+func analyze_error(response:String) -> bool:
+	if response.begins_with("<stream:error"):
+		var stream_error = XMPPStreamError.new()
+		stream_error.parse_from_xml(response)
+		var error_name = stream_error.error_name_for_enum(stream_error.error_type)
+		var error = tr('A stream error of type "%" occured, or in other words: % (Stream errors cannot be recovered from, the connection will be closed.'.format([error_name, stream_error.human_friendly_error_message()], "%)"))
+		error.emit(error)
+		return true
+	return false
+
+
+func analyze_feature_starttls(response:String) -> bool:
+	if response.begins_with("<stream:features"):
+		var stream_features = XMPPStreamFeatures.new()
+		stream_features.parse_from_xml(response)
+
+		if stream_features.parsedDictionary.has("starttls"):
+			send_msg_debug.emit("Stream: sending request for ssl")
+			var request_tls = "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"
+			send_tcp_string(request_tls)
+			stream_status = self.StreamState.TLS
+			return true
+	return false
+
+
+func analyze_feature_mechanisms(response:String) -> bool:
+	if response.begins_with("<stream:features"):
+		var stream_features = XMPPStreamFeatures.new()
+		stream_features.parse_from_xml(response)
+		if stream_features.parsedDictionary.has("mechanisms"):
+			print("response:", response)
+			authentication_methods = stream_features.parsedDictionary["mechanisms"]
+			if (authentication_methods.size() > 0):
+				var tmp:String = ""
+				var sep:String = ""
+				for item in authentication_methods:
+					tmp += sep + item
+					sep = ", "
+				send_msg_debug.emit("Stream: authentication methods: " + tmp)
+				#negotiate_ssl_sasl(authentication_methods)
+				#stream_status = self.StreamState.AUTHENTICATE
+				return true
+				#negotiate_ssl_sasl(authentication_methods)
+	return false
+
+
+func send_tcp_initialize_xmpp() -> void:
+	""" Send the stream header.
+		Needs to be done several times over stream negotiation.
+	"""
+	var message:String = "<?xml version='1.0'?>" + \
+		"<stream:stream" + \
+		" xmlns=\"jabber:client\"" + \
+		" version=\"1.0\"" + \
+		" xmlns:stream=\"http://etherx.jabber.org/streams\"" + \
+		" to=\"" + server_xmpp_name + "\" " + \
+		" xml:lang=\"en\"" + \
+		" > "
+	#	" from=\"" + account_name + "\" " + \
+	# + locale + "'"  + 
+	print(message)
+	send_tcp_string(message)
+
+
+func send_ssl_initialize_xmpp() -> void:
+	""" Send the stream header.
+		Needs to be done several times over stream negotiation.
+	"""
+	var server_name = account_name.split("@")[-1]
+	var message:String = "<?xml version='1.0'?>" + \
+		"<stream:stream" + \
+		" xmlns=\"jabber:client\"" + \
+		" version=\"1.0\"" + \
+		" xmlns:stream=\"http://etherx.jabber.org/streams\"" + \
+		" from=\"" + account_name + "\" " + \
+		" to=\"" + server_name + "\" " + \
+		" xml:lang=\"en\"" + \
+		" > "
+	#	" from=\"" + account_name + "\" " + \
+	# + locale + "'"  + 
+	print(message)
+	send_ssl_string(message)
+
+
+
+func negotiate_ssl_sasl(authentication_methods : Array) -> bool:
+	if ( authentication_methods.has("PLAIN")):
+		send_msg_debug.emit("Stream: sending request for plain")
+		var msg:PackedByteArray = PackedByteArray()
+		msg.push_back(0)
+		var t = account_name.split("@")[0]
+		msg += t.to_ascii_buffer()
+		#msg += conv_string_to_PackedByteArray(account_name.split("@")[0])
+		msg.push_back(0)
+		msg += password.to_ascii_buffer()
+		var auth_account:String = Marshalls.raw_to_base64(msg)
+		var request_sasl:String = "<auth" + \
+						" xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" + \
+						" mechanism='PLAIN'" + \
+						" >" + auth_account + "</auth>"
+		send_ssl_string(request_sasl)
+		return true
+	else:
+		send_msg_error.emit("Impossible to authenticate (unknown protocol)")
+		return false
+
+
+#
+#
+#
+
+func connect_to_server_xmpp() -> void:
+	var res = tcp_peer.connect_to_host(server_xmpp_name, port_number)
+	if res == OK:
+		count_connecting_time = 0
+		stream_status = self.StreamState.END
+		set_process(true)
+		tgt_peer = tcp_peer
+
+func _process_old(delta) -> void:
+	print(server_xmpp_name, ":", port_number, " / get_status:" , tcp_peer.get_status(), " / count_connecting_time:", count_connecting_time, " / stream_status:", stream_status)
+	if tgt_peer.get_status() == StreamPeerTCP.STATUS_CONNECTED:
 		print("STATUS_CONNECTED:", delta)
 		if (tgt_peer.has_method("poll")):
 			tgt_peer.poll()
@@ -109,15 +419,15 @@ func _process(delta):
 			send_msg_debug.emit("Stream: response: " + response)
 			if stream_status == self.StreamState.STANZA:
 				#collect_stanza(remove_stream_header(response))
-				Global.msg_info("", [])
 				print("collect_stanza")
 			else:
 				print("stream_process")
 				stream_process(remove_stream_header(response))
 #			print(remove_stream_header(response))
 		elif stream_status == self.StreamState.END:
-			start_stream()
-			stream_status = self.StreamState.START
+			reinit_stream()
+			#start_stream()
+			#stream_status = self.StreamState.START
 		count_connecting_time = 0
 	if tgt_peer.get_status() == StreamPeerTCP.STATUS_CONNECTING:
 		print("STATUS_CONNECTING:", delta)
@@ -132,6 +442,7 @@ func _process(delta):
 		set_process(false) # stop listening for packets
 		try_connect = 20
 		stream_status = self.StreamState.END
+		reinit_stream()
 	if tgt_peer.get_status() == StreamPeerTCP.STATUS_NONE and xmppclient:
 		print("connect_to_server:", xmppclient)
 		connect_to_server()
@@ -144,7 +455,7 @@ func connect_to_server():
 		pass
 	if try_connect == 0 and tcp_peer.get_status() == StreamPeerTCP.STATUS_NONE:
 		#print("-> ", server_ip, ":", port_number, "/" , tcp_peer.get_status())
-		var res = tcp_peer.connect_to_host(server_ip, port_number)
+		var res = tcp_peer.connect_to_host(server_xmpp_name, port_number)
 		if res == OK:
 			count_connecting_time = 0
 			stream_status = self.StreamState.END
@@ -162,6 +473,18 @@ func send_string(stanza:String) ->void:
 	tgt_peer.put_data(stanza.to_utf8_buffer())
 
 
+func send_tcp_string(stanza:String) ->void:
+	""" Send a string in the appropriate encoding. """
+	send_msg_debug.emit("Sending data: '%'".format([stanza], "%"))
+	tcp_peer.put_data(stanza.to_utf8_buffer())
+
+
+func send_ssl_string(stanza:String) ->void:
+	""" Send a string in the appropriate encoding. """
+	send_msg_debug.emit("Sending data: '%'".format([stanza], "%"))
+	ssl_peer.put_data(stanza.to_utf8_buffer())
+
+
 func conv_string_to_PackedByteArray(message:String) -> PackedByteArray:
 	return message.to_ascii_buffer()
 
@@ -277,7 +600,7 @@ func stream_process(response :String = "") -> void:
 		print("Mystery stream status: "+str(stream_status))
 
 
-func negotiate_tls() -> void:
+func negotiate_tls() -> bool:
 	#var ssl_peer = StreamPeerTLS.new()
 	# I am unsure how to validate the ssl certificate for an unknown host?
 	#var ssl_succes = FAILED
@@ -298,29 +621,31 @@ func negotiate_tls() -> void:
 		print("get_status:", ssl_peer.get_status())
 		print("-----")
 		#stream_status == StreamState.START
+		return true
 	else:
 		send_msg_error.emit("SSL failed, error %".format([ssl_succes], "%"))
+		return false
 
 
 func negotiate_sasl(authentication_methods : Array) -> void:
-	if (!authentication_methods.has("PLAIN")):
-		end_stream()
-	send_msg_debug.emit("Stream: sending request for plain")
-	var msg:PackedByteArray = PackedByteArray()
-	msg.push_back(0)
-	var t = account_name.split("@")[0]
-	msg += t.to_ascii_buffer()
-	#msg += conv_string_to_PackedByteArray(account_name.split("@")[0])
-	msg.push_back(0)
-	msg += password.to_ascii_buffer()
-	print("7:", msg)
-	
-	var auth_account:String = Marshalls.raw_to_base64(msg)
-	var request_sasl:String = "<auth" + \
+	if ( authentication_methods.has("PLAIN")):
+		send_msg_debug.emit("Stream: sending request for plain")
+		var msg:PackedByteArray = PackedByteArray()
+		msg.push_back(0)
+		var t = account_name.split("@")[0]
+		msg += t.to_ascii_buffer()
+		#msg += conv_string_to_PackedByteArray(account_name.split("@")[0])
+		msg.push_back(0)
+		msg += password.to_ascii_buffer()
+		var auth_account:String = Marshalls.raw_to_base64(msg)
+		var request_sasl:String = "<auth" + \
 						" xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" + \
 						" mechanism='PLAIN'" + \
 						" >" + auth_account + "</auth>"
-	send_string(request_sasl)
+		send_string(request_sasl)
+	else:
+		send_msg_error.emit("Impossible to authenticate (unknown protocol)")
+		end_stream()
 
 
 func end_stream() -> void:
diff --git a/client/scenes/main.gd b/client/scenes/main.gd
index 86975cb..4622690 100644
--- a/client/scenes/main.gd
+++ b/client/scenes/main.gd
@@ -35,7 +35,7 @@ func _ready():
 	Multi.update_my_position.connect(_on_update_me)
 	Multi.update_player_position.connect(_on_update_player)
 	Multi.remove_player.connect(_on_remove_player)
-	Stream.set_server_ip("localhost")
+	Stream.set_server_xmpp_name("localhost")
 	Stream.set_port_number(5222)
 	Stream.send_msg_debug.connect(show_stream_debug)
 	Stream.send_msg_error.connect(show_stream_error)