CODEWITHSUNDEEP
swiftmacoslightstreamer
user24063726
user24063726

Reputation: 1

Swift Lightstreamer SDK stuck on connecting

I'm certainly missing something obvious but I can't figure it out. I'm trying to get the Lightstreamer sdk to work on a macOS project in swift.

Everything compiles perfectly and runs without errors but the log systematically indicates Status: CONNECTING.

Stranger still, if I indicate a url which is not a Lightstreamer server the behavior is the same, no error in the logs, just "connecting" for ever.

HTTP requests via URLSession work without problems.

class TestSDK{
    let delegateTest = SubscriptionDelegateImpl()
    let loggerProvider = ConsoleLoggerProvider(level: .debug)
    
    init(){
        LightstreamerClient.setLoggerProvider(loggerProvider)
        
        let client = LightstreamerClient(serverAddress: "https://push.lightstreamer.com/", adapterSet: "DEMO")
        client.connect()
        
        let items = [ "item1", "item2", "item3" ]
        let fields = [ "stock_name", "last_price" ]
        let sub = Subscription(subscriptionMode: .MERGE, items: items, fields: fields)
        sub.dataAdapter = "QUOTE_ADAPTER"
        sub.requestedSnapshot = .yes
        sub.addDelegate(delegateTest)
        client.subscribe(sub)
    }
}

and the logs :

serverAddress changed: https://push.lightstreamer.com/
adapterSet changed: DEMO
Connection requested: details: [serverAddress: https://push.lightstreamer.com/, adapterSet: DEMO, libVersion: swift_client 6.1.1] options: [requestedMaxBandwidth: unlimited, retryDelay: 4000, firstRetryMaxDelay: 100, sessionRecoveryTimeout: 15000, stalledTimeout: 2000, reconnectTimeout: 3000, idleTimeout: 19000, contentLength: 50000000]
Status: CONNECTING
WS connecting: https://push.lightstreamer.com/lightstreamer Sec-WebSocket-Protocol: TLCP-2.5.0.lightstreamer.com
subscriptionDidAddDelegate called
Subscription requested: subId: 1 [mode: MERGE, items: ["item1", "item2", "item3"], fields: ["stock_name", "last_price"], dataAdapter: QUOTE_ADAPTER, requestedSnapshot: yes]

Upvotes: 0

Views: 61

Answers (1)

user24063726
user24063726

Reputation: 1

Found the solution thanks to you. As I suspected, it was a newbie mistake, coming from a different language I didn't thought the garbage collector was this quick...

class TestSDK{
let delegateTest = SubscriptionDelegateImpl()
let loggerProvider = ConsoleLoggerProvider(level: .debug)
var client:LightstreamerClient // solution here, strong reference 

init(){
    LightstreamerClient.setLoggerProvider(loggerProvider)
    
    client = LightstreamerClient(serverAddress: "https://push.lightstreamer.com/", adapterSet: "DEMO")
    client.connect()
    
    let items = [ "item1", "item2", "item3" ]
    let fields = [ "stock_name", "last_price" ]
    let sub = Subscription(subscriptionMode: .MERGE, items: items, fields: fields)
    sub.dataAdapter = "QUOTE_ADAPTER"
    sub.requestedSnapshot = .yes
    sub.addDelegate(delegateTest)
    client.subscribe(sub)
}

}

Upvotes: 0

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