Where to start, implement long-polling in Faye for iOS

Question

I'm using MZFayeClient (https://github.com/m1entus/MZFayeClient) using built in WebSocket. I need to implement long-polling technique. How to do it? Where to start? There isn't information (or enough information) on how to do it or if there an Faye library with long-polling.

score 5 · Answer 1 · edited May 23 '17 at 12:16

I am not a IOS developer but one of my project I was helping to my IOS team for integrating the Faye server.

On my application we had a faye-server already running on rails framework for sending notification then we decide to sending notification to IOS device using same faye-server.

IOS team just follow the instruction of: https://github.com/pcrawfor/FayeObjC

self.client = [[MZFayeClient alloc] initWithURL:[NSURL URLWithString:@"ws://198.128.0.1:9292/faye"]];

ws://198.128.0.1:9292/faye // this URL is same which is used on web-app.

subscribeToChannel & other methods are same like we are using on web-app.

Simple Faye Setup for Rails application .

How can I push to Faye Server from Rails Controller?

It will work for me I hope will also for you ..

sorry for my bad english ;)

score 2 · Answer 2 · edited Apr 20 '16 at 08:32

1. Server up and running:

sudo rackup faye.ru -E production -s thin to start the Faye server

Thin web server (v1.6.4 codename Gob Bluth) Maximum connections set to
1024 Listening on localhost:9292, CTRL+C to stop

Check if server is working

curl http://localhost:9292/faye -d 'message={"channel":"/server", "data":"hello"}'

Response

[{"channel":"/server","successful":true}]

Server log:

[Faye::RackAdapter] Received message via HTTP POST:
"{\"channel\":\"/server\", \"data\":\"hello\"}" [Faye::Server]
Processing messages: [{"channel":"/server","data":"hello"}] (local:
false) [Faye::Server] Passing through incoming extensions:
{"channel":"/server","data":"hello"} [Faye::Server] Handling message:
{"channel":"/server","data":"hello"} (local: false)
[Faye::Engine::Proxy] Publishing message
{"channel":"/server","data":"hello"} [Faye::Server] Processing reply:
{"channel":"/server","successful":true} [Faye::Server] Passing through
outgoing extensions: {"channel":"/server","successful":true}
[Faye::Server] Returning replies:
[{"channel":"/server","successful":true}] [Faye::RackAdapter] HTTP
response: "[{\"channel\":\"/server\",\"successful\":true}]"

2. Work with client: Download MZFayeClient

cd FayeObjC-master/examples
pod install
open FayeObjC.xcworkspace

MZViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.client = [[MZFayeClient alloc] initWithURL:[NSURL URLWithString:@"http://localhost:9292/faye"]];
    [self.client subscribeToChannel:@"/server" success:^{
        NSLog(@"ok");
    } failure:^(NSError *error) {
        NSLog(@"Server %@",error);
    } receivedMessage:^(NSDictionary *message) {
        NSLog(@"Server %@",message);
    }];

    self.client.delegate = self;
}

3. Build example: Touch on connect:

[Faye::RackAdapter] Received message via WebSocket[hybi-13]:
"{\"supportedConnectionTypes\":[\"long-polling\",\"callback-polling\",\"iframe\",\"websocket\"],\"channel\":\"\\/meta\\/handshake\",\"minimumVersion\":\"1.0beta\",\"version\":\"1.0\"}"
[Faye::Server] Processing messages:
[{"supportedConnectionTypes":["long-polling","callback-polling","iframe","websocket"],"channel":"/meta/handshake","minimumVersion":"1.0beta","version":"1.0"}]
(local: false) [Faye::Server] Passing through incoming extensions:
{"supportedConnectionTypes":["long-polling","callback-polling","iframe","websocket"],"channel":"/meta/handshake","minimumVersion":"1.0beta","version":"1.0"}
[Faye::Server] Handling message:
{"supportedConnectionTypes":["long-polling","callback-polling","iframe","websocket"],"channel":"/meta/handshake","minimumVersion":"1.0beta","version":"1.0"}
(local: false) [Faye::Engine::Proxy] Created new client
"f68nwz5foyf1brczhmutdhclhnbtth5" [Faye::Engine::Proxy] Ping
"f68nwz5foyf1brczhmutdhclhnbtth5", 45 [Faye::Server] Processing reply:
{"channel":"/meta/handshake","successful":true,"version":"1.0","supportedConnectionTypes":["long-polling","cross-origin-long-polling","callback-polling","websocket","eventsource","in-process"],"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","advice":{"reconnect":"retry","interval":0,"timeout":45000}}
[Faye::Server] Passing through outgoing extensions:
{"channel":"/meta/handshake","successful":true,"version":"1.0","supportedConnectionTypes":["long-polling","cross-origin-long-polling","callback-polling","websocket","eventsource","in-process"],"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","advice":{"reconnect":"retry","interval":0,"timeout":45000}}
[Faye::Server] Returning replies:
[{"channel":"/meta/handshake","successful":true,"version":"1.0","supportedConnectionTypes":["long-polling","cross-origin-long-polling","callback-polling","websocket","eventsource","in-process"],"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","advice":{"reconnect":"retry","interval":0,"timeout":45000}}]
[Faye::RackAdapter] Received message via WebSocket[hybi-13]:
"{\"channel\":\"\\/meta\\/connect\",\"clientId\":\"f68nwz5foyf1brczhmutdhclhnbtth5\",\"connectionType\":\"websocket\"}"
[Faye::Server] Processing messages:
[{"channel":"/meta/connect","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","connectionType":"websocket"}]
(local: false) [Faye::Server] Passing through incoming extensions:
{"channel":"/meta/connect","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","connectionType":"websocket"}
[Faye::Server] Handling message:
{"channel":"/meta/connect","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","connectionType":"websocket"}
(local: false) [Faye::Engine::Proxy] Accepting connection from
"f68nwz5foyf1brczhmutdhclhnbtth5" [Faye::Engine::Proxy] Ping
"f68nwz5foyf1brczhmutdhclhnbtth5", 45 [Faye::RackAdapter] Received
message via WebSocket[hybi-13]:
"{\"channel\":\"\\/meta\\/subscribe\",\"clientId\":\"f68nwz5foyf1brczhmutdhclhnbtth5\",\"subscription\":\"\\/server\"}"
[Faye::Server] Processing messages:
[{"channel":"/meta/subscribe","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","subscription":"/server"}]
(local: false) [Faye::Server] Passing through incoming extensions:
{"channel":"/meta/subscribe","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","subscription":"/server"}
[Faye::Server] Handling message:
{"channel":"/meta/subscribe","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","subscription":"/server"}
(local: false) [Faye::Engine::Proxy] Subscribed client
"f68nwz5foyf1brczhmutdhclhnbtth5" to channel "/server" [Faye::Server]
Processing reply:
{"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/meta/subscribe","successful":true,"subscription":"/server"}
[Faye::Server] Passing through outgoing extensions:
{"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/meta/subscribe","successful":true,"subscription":"/server"}
[Faye::Server] Returning replies:
[{"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/meta/subscribe","successful":true,"subscription":"/server"}]

Type "hello" then send

[Faye::RackAdapter] Received message via WebSocket[hybi-13]:
"{\"data\":{\"text\":\"hello\"},\"clientId\":\"f68nwz5foyf1brczhmutdhclhnbtth5\",\"channel\":\"\\/browser\",\"id\":\"MQ==\"}"
[Faye::Server] Processing messages:
[{"data":{"text":"hello"},"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","id":"MQ=="}]
(local: false)
[Faye::Server] Passing through incoming extensions:
{"data":{"text":"hello"},"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","id":"MQ=="}
[Faye::Server] Handling message:
{"data":{"text":"hello"},"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","id":"MQ=="}
(local: false)
[Faye::Engine::Proxy] Publishing message
{"data":{"text":"hello"},"clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","id":"MQ=="}
[Faye::Server] Processing reply:
{"id":"MQ==","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","successful":true}
[Faye::Server] Passing through outgoing extensions:
{"id":"MQ==","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","successful":true}
[Faye::Server] Returning replies:
[{"id":"MQ==","clientId":"f68nwz5foyf1brczhmutdhclhnbtth5","channel":"/browser","successful":true}]

Hope this help.

Where to start, implement long-polling in Faye for iOS

2 Answers2