Hi, we are currently implementing below method for a quick POC in iOS (Xcode 15.3/macOS Sonoma 14.0):
func startQUICConnection() async {
// Set the initial stream to bidirectional.
options.direction = .bidirectional
self.mainConn?.stateUpdateHandler = { [weak self] state in
print("Main Connection State: \(state)")
switch state {
case .ready:
print("Ready...")
default:
break
}
}
// Don't forget to start the connection.
self.mainConn?.start(queue: self.queue)
}
This is what we have in the initializer of the class:
parameters = NWParameters(quic: options)
mainConn = NWConnection(to: endpoint, using: parameters)
These are the class's properties:
let endpoint = NWEndpoint.hostPort(host: "0.0.0.0", port: .init(integerLiteral: 6667))
let options = NWProtocolQUIC.Options(alpn: ["echo"])
let queue = DispatchQueue(label: "quic", qos: .userInteractive)
var mainConn: NWConnection? = nil
let parameters: NWParameters!
As per the logs, we never get to the .ready state for the NWConnection.
Logs:
nw_path_evaluator_create_flow_inner failed NECP_CLIENT_ACTION_ADD_FLOW (null) evaluator parameters: quic, attach protocol listener, attribution: developer, context: Default Network Context (private), proc: 022B7C28-0271-3628-8E5E-26B590B50E5B
nw_path_evaluator_create_flow_inner NECP_CLIENT_ACTION_ADD_FLOW 8FEBF750-979D-437F-B4A8-FB71F4C5A882 [22: Invalid argument]
nw_endpoint_flow_setup_channel [C2 0.0.0.0:6667 in_progress channel-flow (satisfied (Path is satisfied), interface: en0[802.11], ipv4, ipv6, dns, uses wifi)] failed to request add nexus flow
Main Connection State: preparing
Main Connection State: waiting(POSIXErrorCode(rawValue: 22): Invalid argument)
We're running a local server using proxygen on port 6667. It connects with the proxygen client though...
Have tried several thing but results are the same.
