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2020-08-15 17:42:49 -04:00
extends Reference
# A socket to interact with Nakama server.
class_name NakamaSocket
const ChannelType = NakamaRTMessage.ChannelJoin.ChannelType
# Emitted when a socket is closed.
signal closed()
# Emitted when a socket is connected.
signal connected()
# Emitted when a chat channel message is received
signal received_channel_message(p_channel_message) # ApiChannelMessage
# Emitted when receiving a presence change for joins and leaves with users in a chat channel.
signal received_channel_presence(p_channel_presence) # ChannelPresenceEvent
# Emitted when an error occurs on the socket.
signal received_error(p_error)
# Emitted when receiving a matchmaker matched message.
signal received_matchmaker_matched(p_matchmaker_matched) # MatchmakerMatched
# Emitted when receiving a message from a multiplayer match.
signal received_match_state(p_match_state) # MatchData
# Emitted when receiving a presence change for joins and leaves of users in a multiplayer match.
signal received_match_presence(p_match_presence_event) # MatchPresenceEvent
# Emitted when receiving a notification for the current user.
signal received_notification(p_api_notification) # ApiNotification
# Emitted when receiving a presence change for when a user updated their online status.
signal received_status_presence(p_status_presence_event) # StatusPresenceEvent
# Emitted when receiving a presence change for joins and leaves on a realtime stream.
signal received_stream_presence(p_stream_presence_event) # StreamPresenceEvent
# Emitted when receiving a message from a realtime stream.
signal received_stream_state(p_stream_state) # StreamState
var _adapter : NakamaSocketAdapter
var _free_adapter : bool = false
var _weak_ref : WeakRef
var _base_uri : String
var _responses : Dictionary
var _last_id : int = 1
var _conn : GDScriptFunctionState = null
var logger : NakamaLogger = null
func _resume_conn(p_err : int):
if _conn:
if p_err: # Exception
logger.warning("Connection error: %d" % p_err)
_conn.resume(NakamaAsyncResult.new(NakamaException.new()))
else:
logger.info("Connected!")
_conn.resume(NakamaAsyncResult.new())
call_deferred("_survive", _conn)
_conn = null
func _init(p_adapter : NakamaSocketAdapter,
p_host : String,
p_port : int,
p_scheme : String,
p_free_adapter : bool = false):
logger = p_adapter.logger
_adapter = p_adapter
_weak_ref = weakref(_adapter)
var port = ""
if (p_scheme == "ws" and p_port != 80) or (p_scheme == "wss" and p_port != 443):
port = ":%d" % p_port
_base_uri = "%s://%s%s" % [p_scheme, p_host, port]
_free_adapter = p_free_adapter
_adapter.connect("closed", self, "_closed")
_adapter.connect("connected", self, "_connected")
_adapter.connect("received_error", self, "_error")
_adapter.connect("received", self, "_received")
func _notification(what):
if what == NOTIFICATION_PREDELETE:
# Is this a bug? Why can't I call a function? self is null...
# _clear_responses()
# _resume_conn(ERR_FILE_EOF)
var keys = _responses.keys()
for k in keys:
_responses[k].resume(NakamaException.new("Cancelled!"))
if _conn != null:
_conn.resume(ERR_FILE_EOF)
call_deferred("_survive", _conn)
_conn = null
if _weak_ref.get_ref() == null:
return
_adapter.close()
if _free_adapter:
_adapter.queue_free()
func _closed(p_error = null):
emit_signal("closed")
_resume_conn(ERR_CANT_CONNECT)
_clear_responses()
func _error(p_error):
emit_signal("received_error", p_error)
_resume_conn(p_error)
_clear_responses()
func _connected():
emit_signal("connected")
_resume_conn(OK)
func _received(p_bytes : PoolByteArray):
var json_str = p_bytes.get_string_from_utf8()
var json := JSON.parse(json_str)
if json.error != OK or typeof(json.result) != TYPE_DICTIONARY:
logger.error("Unable to parse response: %s" % json_str)
return
var dict : Dictionary = json.result
var cid = dict.get("cid")
if cid:
if _responses.has(cid):
_resume_response(cid, dict)
else:
logger.error("Invalid call id received %s" % dict)
else:
if dict.has("channel_message"):
var res = NakamaAPI.ApiChannelMessage.create(NakamaAPI, dict["channel_message"])
emit_signal("received_channel_message", res)
elif dict.has("channel_presence_event"):
var res = NakamaRTAPI.ChannelPresenceEvent.create(NakamaRTAPI, dict["channel_presence_event"])
emit_signal("received_channel_presence", res)
elif dict.has("match_data"):
var res = NakamaRTAPI.MatchData.create(NakamaRTAPI, dict["match_data"])
emit_signal("received_match_state", res)
elif dict.has("match_presence_event"):
var res = NakamaRTAPI.MatchPresenceEvent.create(NakamaRTAPI, dict["match_presence_event"])
emit_signal("received_match_presence", res)
elif dict.has("matchmaker_matched"):
var res = NakamaRTAPI.MatchmakerMatched.create(NakamaRTAPI, dict["matchmaker_matched"])
emit_signal("received_matchmaker_matched", res)
elif dict.has("notifications"):
var res = NakamaAPI.ApiNotificationList.create(NakamaAPI, dict["notifications"])
for n in res.notifications:
emit_signal("received_notification", n)
elif dict.has("status_presence_event"):
var res = NakamaRTAPI.StatusPresenceEvent.create(NakamaRTAPI, dict["status_presence_event"])
emit_signal("received_status_presence", res)
elif dict.has("stream_presence_event"):
var res = NakamaRTAPI.StreamPresenceEvent.create(NakamaRTAPI, dict["stream_presence_event"])
emit_signal("received_stream_presence", res)
elif dict.has("stream_data"):
var res = NakamaRTAPI.StreamData.create(NakamaRTAPI, dict["stream_data"])
emit_signal("received_stream_state", res)
else:
logger.warning("Unhandled response: %s" % dict)
func _resume_response(p_id : String, p_data):
if _responses.has(p_id):
logger.debug("Resuming response: %s: %s" % [p_id, p_data])
_responses[p_id].resume(p_data)
else:
logger.warning("Trying to resume missing response: %s: %s" % [p_id, p_data])
func _cancel_response(p_id : String):
logger.debug("Cancelling response: %s" % [p_id])
_resume_response(p_id, NakamaException.new("Request cancelled."))
func _clear_responses():
var ids = _responses.keys()
for id in ids:
_cancel_response(id)
func _survive(p_ref):
pass
func _parse_result(p_responses : Dictionary, p_id : String, p_type, p_ns : GDScript, p_result_key = null):
# Specifically defined key, or default for objject
var result_key = p_result_key
if p_type != NakamaAsyncResult and result_key == null:
result_key = p_type.get_result_key()
# Here we yield and wait
var data = yield() # Manually resumed
call_deferred("_survive", p_responses[p_id])
p_responses.erase(p_id) # Remove this request from the list of responses
# We got an exception, maybe the task was cancelled?
if data is NakamaException:
return p_type.new(data as NakamaException)
# Error from server
if data.has("error"):
var err = data["error"]
var code = -1
var msg = str(err)
if typeof(err) == TYPE_DICTIONARY:
msg = err.get("message", "")
code = err.get("code", -1)
logger.warning("Error response from server: %s" % err)
return p_type.new(NakamaException.new(msg, code))
# Simple ack response
elif p_type == NakamaAsyncResult:
return NakamaAsyncResult.new()
# Missing expected result key
elif not data.has(result_key):
logger.warning("Missing expected result key: %s" % result_key)
return p_type.new(NakamaException.new("Missing expected result key: %s" % result_key))
# All good, proceed with parsing
else:
return p_type.create(p_ns, data.get(result_key))
func _send_async(p_message, p_parse_type = NakamaAsyncResult, p_ns = NakamaRTAPI, p_msg_key = null, p_result_key = null):
logger.debug("Sending async request: %s" % p_message)
# For messages coming from the API which does not have a key defined, so we can override it
var msg = p_msg_key
# For regular RT messages
if msg == null:
msg = p_message.get_msg_key()
var id = str(_last_id)
_last_id += 1
_responses[id] = _parse_result(_responses, id, p_parse_type, p_ns, p_result_key)
var json := JSON.print({
"cid": id,
msg: p_message.serialize()
})
var err = _adapter.send(json.to_utf8())
if err != OK:
call_deferred("_cancel_response", id)
return _responses[id]
func _connect_function():
return yield() # Manually resumed
# If the socket is connected.
func is_connected_to_host():
return _adapter.is_connected_to_host()
# If the socket is connecting.
func is_connecting_to_host():
return _adapter.is_connecting_to_host()
# Close the socket connection to the server.
func close():
_adapter.close()
# Connect to the server.
# @param p_session - The session of the user.
# @param p_appear_online - If the user who appear online to other users.
# @param p_connect_timeout - The time allowed for the socket connection to be established.
# Returns a task to represent the asynchronous operation.
func connect_async(p_session : NakamaSession, p_appear_online : bool = false, p_connect_timeout : int = 3):
var uri = "%s/ws?lang=en&status=%s&token=%s" % [_base_uri, str(p_appear_online).to_lower(), p_session.token]
logger.debug("Connecting to host: %s" % uri)
_adapter.connect_to_host(uri, p_connect_timeout)
_conn = _connect_function()
return _conn
# Join the matchmaker pool and search for opponents on the server.
# @param p_query - The matchmaker query to search for opponents.
# @param p_min_count - The minimum number of players to compete against in a match.
# @param p_max_count - The maximum number of players to compete against in a match.
# @param p_string_properties - A set of key/value properties to provide to searches.
# @param p_numeric_properties - A set of key/value numeric properties to provide to searches.
# Returns a task which resolves to a matchmaker ticket object.
func add_matchmaker_async(p_query : String = "*", p_min_count : int = 2, p_max_count : int = 8,
p_string_props : Dictionary = {}, p_numeric_props : Dictionary = {}) -> NakamaRTAPI.MatchmakerTicket:
return _send_async(
NakamaRTMessage.MatchmakerAdd.new(p_query, p_min_count, p_max_count, p_string_props, p_numeric_props),
NakamaRTAPI.MatchmakerTicket
)
## <summary>
## Create a multiplayer match on the server.
## </summary>
## Returns a task to represent the asynchronous operation.
func create_match_async():
return _send_async(NakamaRTMessage.MatchCreate.new(), NakamaRTAPI.Match)
# Subscribe to one or more users for their status updates.
# @param p_user_ids - The IDs of users.
# @param p_usernames - The usernames of the users.
# Returns a task which resolves to the current statuses for the users.
func follow_users_async(p_ids : PoolStringArray, p_usernames : PoolStringArray = []) -> NakamaRTAPI.Status:
return _send_async(NakamaRTMessage.StatusFollow.new(p_ids, p_usernames), NakamaRTAPI.Status)
# Join a chat channel on the server.
# @param p_target - The target channel to join.
# @param p_type - The type of channel to join.
# @param p_persistence - If chat messages should be stored.
# @param p_hidden - If the current user should be hidden on the channel.
# Returns a task which resolves to a chat channel object.
func join_chat_async(p_target : String, p_type : int, p_persistence : bool = false, p_hidden : bool = false) -> NakamaRTAPI.Channel:
return _send_async(
NakamaRTMessage.ChannelJoin.new(p_target, p_type, p_persistence, p_hidden),
NakamaRTAPI.Channel
)
# Join a multiplayer match with the matchmaker matched object.
# @param p_matched - A matchmaker matched object.
# Returns a task which resolves to a multiplayer match.
func join_matched_async(p_matched):
var msg := NakamaRTMessage.MatchJoin.new()
if p_matched.match_id:
msg.match_id = p_matched.match_id
else:
msg.token = p_matched.token
return _send_async(msg, NakamaRTAPI.Match)
# Join a multiplayer match by ID.
# @param p_match_id - The ID of the match to attempt to join.
# @param p_metadata - An optional set of key-value metadata pairs to be passed to the match handler.
# Returns a task which resolves to a multiplayer match.
func join_match_async(p_match_id : String, p_metadata = null):
var msg := NakamaRTMessage.MatchJoin.new()
msg.match_id = p_match_id
return _send_async(msg, NakamaRTAPI.Match)
# Leave a chat channel on the server.
## @param p_channel_id - The ID of the chat channel to leave.
# Returns a task which represents the asynchronous operation.
func leave_chat_async(p_channel_id : String) -> NakamaAsyncResult:
return _send_async(NakamaRTMessage.ChannelLeave.new(p_channel_id))
# Leave a multiplayer match on the server.
# @param p_match_id - The multiplayer match to leave.
# Returns a task which represents the asynchronous operation.
func leave_match_async(p_match_id : String) -> NakamaAsyncResult:
return _send_async(NakamaRTMessage.MatchLeave.new(p_match_id))
# Remove a chat message from a chat channel on the server.
# @param p_channel - The chat channel with the message to remove.
# @param p_message_id - The ID of the chat message to remove.
# Returns a task which resolves to an acknowledgement of the removed message.
func remove_chat_message_async(p_channel_id : String, p_message_id : String):
return _send_async(
NakamaRTMessage.ChannelMessageRemove.new(p_channel_id, p_message_id),
NakamaRTAPI.ChannelMessageAck
)
# Leave the matchmaker pool with the ticket.
# @param p_ticket - The ticket returned by the matchmaker on join.
# Returns a task which represents the asynchronous operation.
func remove_matchmaker_async(p_ticket : String) -> NakamaAsyncResult:
return _send_async(NakamaRTMessage.MatchmakerRemove.new(p_ticket))
# Execute an RPC function to the server.
# @param p_func_id - The ID of the function to execute.
# @param p_payload - An (optional) String payload to send to the server.
# Returns a task which resolves to the RPC function response object.
func rpc_async(p_func_id : String, p_payload = null) -> NakamaAPI.ApiRpc:
var payload = p_payload
match typeof(p_payload):
TYPE_NIL, TYPE_STRING:
pass
_:
payload = JSON.print(p_payload)
return _send_async(NakamaAPI.ApiRpc.create(NakamaAPI, {
"id": p_func_id,
"payload": payload
}), NakamaAPI.ApiRpc, NakamaAPI, "rpc", "rpc")
# Send input to a multiplayer match on the server.
# When no presences are supplied the new match state will be sent to all presences.
# @param p_match_id - The ID of the match.
# @param p_op_code - An operation code for the input.
# @param p_data - The input data to send.
# @param p_presences - The presences in the match who should receive the input.
# Returns a task which represents the asynchronous operation.
func send_match_state_async(p_match_id, p_op_code : int, p_data : String, p_presences = null):
var req = _send_async(NakamaRTMessage.MatchDataSend.new(
p_match_id,
p_op_code,
Marshalls.utf8_to_base64(p_data),
p_presences
))
# This do not return a response from server, you don't really need to wait for it.
req.call_deferred("resume", {})
call_deferred("_survive", req)
return req
# Send input to a multiplayer match on the server.
# When no presences are supplied the new match state will be sent to all presences.
# @param p_match_id - The ID of the match.
# @param p_op_code - An operation code for the input.
# @param p_data - The input data to send.
# @param p_presences - The presences in the match who should receive the input.
# Returns a task which represents the asynchronous operation.
func send_match_state_raw_async(p_match_id, p_op_code : int, p_data : PoolByteArray, p_presences = null):
var req = _send_async(NakamaRTMessage.MatchDataSend.new(
p_match_id,
p_op_code,
Marshalls.raw_to_base64(p_data),
p_presences
))
# This do not return a response from server, you don't really need to wait for it.
req.call_deferred("resume", {})
call_deferred("_survive", req)
return req
# Unfollow one or more users from their status updates.
# @param p_user_ids - An array of user ids to unfollow.
# Returns a task which represents the asynchronous operation.
func unfollow_users_async(p_ids : PoolStringArray):
return _send_async(NakamaRTMessage.StatusUnfollow.new(p_ids))
# Update a chat message on a chat channel in the server.
# @param p_channel_id - The ID of the chat channel with the message to update.
# @param p_message_id - The ID of the message to update.
# @param p_content - The new contents of the chat message.
# Returns a task which resolves to an acknowledgement of the updated message.
func update_chat_message_async(p_channel_id : String, p_message_id : String, p_content : Dictionary):
return _send_async(
NakamaRTMessage.ChannelMessageUpdate.new(p_channel_id, p_message_id, JSON.print(p_content)),
NakamaRTAPI.ChannelMessageAck
)
# Update the status for the current user online.
# @param p_status - The new status for the user.
# Returns a task which represents the asynchronous operation.
func update_status_async(p_status : String):
return _send_async(NakamaRTMessage.StatusUpdate.new(p_status))
# Send a chat message to a chat channel on the server.
# @param p_channel_id - The ID of the chat channel to send onto.
# @param p_content - The contents of the message to send.
# Returns a task which resolves to the acknowledgement of the chat message write.
func write_chat_message_async(p_channel_id : String, p_content : Dictionary):
return _send_async(
NakamaRTMessage.ChannelMessageSend.new(p_channel_id, JSON.print(p_content)),
NakamaRTAPI.ChannelMessageAck
)