B4J Question Connection error

[hamed mostafaye]

When the system internet is disconnected, the following error is displayed in the logs
How can I check the internet status before sending the request to avoid this error?

java.net.UnknownHostException: sepideh.ir
    at java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:800)
    at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1495)
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1354)
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1288)
    at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)
    at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164)
    at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129)
    at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71)
    at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:205)
    at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:106)
    at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:74)
    at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:255)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
    at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)
    at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.executeWithTimeout(OkHttpClientWrapper.java:175)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.access$0(OkHttpClientWrapper.java:172)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper$ExecuteHelper.run(OkHttpClientWrapper.java:220)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
    at java.base/java.lang.Thread.run(Thread.java:832)

 

[Erel]

How can I check the internet status before sending the request to avoid this error?

You don't need to check the status. You do need to properly handle the error.

 

[hamed mostafaye]

You don't need to check the status. You do need to properly handle the error.

But the logger does not show the line of the error. (Even in debug mode)
How do I know which line or event the error occurs in?
How can I handle this error?

 

[Erel]

The error is caught by OkHttpUtils2. You need to check whether Job.Success is true or false.