WebSocket quote Pinnacle in Kotlin (OkHttp)

Risposta: con OkHttp, costruisci una Request verso wss://pinnfeed.io/v1/stream con header x-api-key, chiama newWebSocket, invia un JSON subscribe in onOpen, e rispondi {"type":"pong"} a ogni ping server (ogni 20 s). Frame: welcome, subscribed, parti snapshot, poi delta. Builder (99 €/mese) o Pro.

Gradle#

dependencies {
    implementation("com.squareup.okhttp3:okhttp:4.12.0")
    implementation("org.json:json:20240303")
}

Client#

import okhttp3.*
import org.json.JSONObject
import java.util.concurrent.TimeUnit

fun main() {
    val key = System.getenv("PINNFEED_KEY") ?: error("set PINNFEED_KEY")   // ps_live_...
    val client = OkHttpClient.Builder().readTimeout(0, TimeUnit.MILLISECONDS).build()

    fun connect(delayMs: Long = 0) {
        Thread.sleep(delayMs)
        val req = Request.Builder().url("wss://pinnfeed.io/v1/stream").header("x-api-key", key).build()
        client.newWebSocket(req, object : WebSocketListener() {
            override fun onOpen(ws: WebSocket, response: Response) {
                ws.send("""{"type":"subscribe","sports":["soccer"],"markets":["moneyline"],"main":true}""")
            }
            override fun onMessage(ws: WebSocket, text: String) {
                val msg = JSONObject(text)
                when (msg.getString("type")) {
                    "ping" -> ws.send("""{"type":"pong"}""")
                    "delta" -> {
                        val changes = msg.getJSONArray("changes")
                        for (i in 0 until changes.length()) {
                            val ch = changes.getJSONObject(i)
                            if (ch.getString("kind") == "market" && ch.getString("op") == "upsert") {
                                val m = ch.getJSONObject("market")
                                if (m.optDouble("maxStake", 0.0) >= 100) println("${m.getLong("eventId")} ${m.getJSONArray("outcomes")}")
                            }
                        }
                    }
                    "error" -> println("error ${msg.optString("code")}: ${msg.optString("message")}")
                }
            }
            override fun onClosed(ws: WebSocket, code: Int, reason: String) {
                println("closed $code $reason")
                if (code != 4001) connect(2000)          // 4001 = key revoked
            }
            override fun onFailure(ws: WebSocket, t: Throwable, response: Response?) {
                println("failure ${response?.code} ${t.message}")
                connect(5000)
            }
        })
    }
    connect()
}

CTA#

Builder (99 €/mese). Prova 3 giorni; carta richiesta. REST gratis: signup.

Domande frequenti#

Perché Builder?#

/v1/stream richiede Builder o Pro. Free/Hobby ricevono 403 plan_lacks_ws.

Serve un SDK ufficiale?#

No — OkHttp + JSON bastano.

Contenuto educativo per adulti?#

Sì (18+).

Contenuto educativo per maggiorenni (18+): non pronostici né promesse di guadagno. In Italia scommetti solo con operatori autorizzati ADM.