small hotfix

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## 30.0.1
 
+* `Core`:
+  * Potential fix of [#989](https://github.com/InsanusMokrassar/ktgbotapi/issues/989) by:
+    * In long polling have been added check for causing by unresolved address exception
+    * Add `TelegramBotPipelinesHandler.onRequestExceptionInLimiter` which will be triggered in ANY exception during
+    request execution
+
 ## 30.0.0
 
 **THIS UPDATE MAY CONTAINS BREAKING CHANGES**

gradle.properties

@@ -9,4 +9,4 @@ kotlin.incremental.js=true
 ksp.useKSP2=false
 
 library_group=dev.inmo
-library_version=30.0.1
+library_version=30.0.1-rc3

tgbotapi.core/api/tgbotapi.core.api

@@ -397,6 +397,7 @@ public abstract interface class dev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesH
 	public fun onBeforeCallFactoryMakeCall (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onBeforeSearchCallFactory (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestException (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun onRequestExceptionInLimiter (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultAbsent (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultPresented (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestReturnResult-3t6e044 (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -407,6 +408,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler$Compan
 	public fun onBeforeCallFactoryMakeCall (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onBeforeSearchCallFactory (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestException (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun onRequestExceptionInLimiter (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultAbsent (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultPresented (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestReturnResult-3t6e044 (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -417,6 +419,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler$Defaul
 	public static fun onBeforeCallFactoryMakeCall (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public static fun onBeforeSearchCallFactory (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public static fun onRequestException (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static fun onRequestExceptionInLimiter (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public static fun onRequestResultAbsent (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public static fun onRequestResultPresented (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public static fun onRequestReturnResult-3t6e044 (Ldev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler;Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -475,13 +478,14 @@ public final class dev/inmo/tgbotapi/bot/ktor/base/SimpleRequestCallFactory : de
 public class dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddleware : dev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler {
 	public static final field Companion Ldev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddleware$Companion;
 	public fun <init> ()V
-	public fun <init> (Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function5;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Ljava/lang/String;)V
+	public fun <init> (Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function5;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function3;Ljava/lang/String;)V
-	public synthetic fun <init> (Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function5;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Ljava/lang/String;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public synthetic fun <init> (Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function5;Lkotlin/jvm/functions/Function3;Lkotlin/jvm/functions/Function4;Lkotlin/jvm/functions/Function3;Ljava/lang/String;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun getId ()Ljava/lang/String;
 	public fun onAfterCallFactoryMakeCall (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onBeforeCallFactoryMakeCall (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onBeforeSearchCallFactory (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestException (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun onRequestExceptionInLimiter (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultAbsent (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultPresented (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestReturnResult-3t6e044 (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -503,6 +507,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewareB
 	public final fun doOnBeforeCallFactoryMakeCall (Lkotlin/jvm/functions/Function3;)V
 	public final fun doOnBeforeSearchCallFactory (Lkotlin/jvm/functions/Function3;)V
 	public final fun doOnRequestException (Lkotlin/jvm/functions/Function3;)V
+	public final fun doOnRequestExceptionInLimiter (Lkotlin/jvm/functions/Function3;)V
 	public final fun doOnRequestResultAbsent (Lkotlin/jvm/functions/Function3;)V
 	public final fun doOnRequestResultPresented (Lkotlin/jvm/functions/Function5;)V
 	public final fun doOnRequestReturnResult (Lkotlin/jvm/functions/Function4;)V
@@ -511,6 +516,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewareB
 	public final fun getOnBeforeCallFactoryMakeCall ()Lkotlin/jvm/functions/Function3;
 	public final fun getOnBeforeSearchCallFactory ()Lkotlin/jvm/functions/Function3;
 	public final fun getOnRequestException ()Lkotlin/jvm/functions/Function3;
+	public final fun getOnRequestExceptionInLimiter ()Lkotlin/jvm/functions/Function3;
 	public final fun getOnRequestResultAbsent ()Lkotlin/jvm/functions/Function3;
 	public final fun getOnRequestResultPresented ()Lkotlin/jvm/functions/Function5;
 	public final fun getOnRequestReturnResult ()Lkotlin/jvm/functions/Function4;
@@ -519,6 +525,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewareB
 	public final fun setOnBeforeCallFactoryMakeCall (Lkotlin/jvm/functions/Function3;)V
 	public final fun setOnBeforeSearchCallFactory (Lkotlin/jvm/functions/Function3;)V
 	public final fun setOnRequestException (Lkotlin/jvm/functions/Function3;)V
+	public final fun setOnRequestExceptionInLimiter (Lkotlin/jvm/functions/Function3;)V
 	public final fun setOnRequestResultAbsent (Lkotlin/jvm/functions/Function3;)V
 	public final fun setOnRequestResultPresented (Lkotlin/jvm/functions/Function5;)V
 	public final fun setOnRequestReturnResult (Lkotlin/jvm/functions/Function4;)V
@@ -537,6 +544,7 @@ public final class dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewares
 	public fun onBeforeCallFactoryMakeCall (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onBeforeSearchCallFactory (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestException (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun onRequestExceptionInLimiter (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/lang/Throwable;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultAbsent (Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestResultPresented (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ldev/inmo/tgbotapi/bot/ktor/KtorCallFactory;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun onRequestReturnResult-3t6e044 (Ljava/lang/Object;Ldev/inmo/tgbotapi/requests/abstracts/Request;Ljava/util/List;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -31903,6 +31911,16 @@ public final class dev/inmo/tgbotapi/utils/CausedByCancellationKt {
 	public static final fun isCausedByCancellation (Ljava/lang/Throwable;)Z
 }
 
+public final class dev/inmo/tgbotapi/utils/CausedByKt {
+	public static final fun causedBy (Ljava/lang/Throwable;Lkotlin/reflect/KClass;Lkotlin/jvm/functions/Function1;)Ljava/lang/Throwable;
+	public static synthetic fun causedBy$default (Ljava/lang/Throwable;Lkotlin/reflect/KClass;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Ljava/lang/Throwable;
+}
+
+public final class dev/inmo/tgbotapi/utils/CausedByUnresolvedAddressExceptionKt {
+	public static final fun causedUnresolvedAddressException (Ljava/lang/Throwable;)Ljava/nio/channels/UnresolvedAddressException;
+	public static final fun isCausedUnresolvedAddressException (Ljava/lang/Throwable;)Z
+}
+
 public final class dev/inmo/tgbotapi/utils/DefaultKSLogKt {
 	public static final fun SetDefaultKTgBotAPIKSLog (ZLkotlin/jvm/functions/Function1;)V
 	public static synthetic fun SetDefaultKTgBotAPIKSLog$default (ZLkotlin/jvm/functions/Function1;ILjava/lang/Object;)V

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/TelegramBotPipelinesHandler.kt

@@ -3,9 +3,24 @@ package dev.inmo.tgbotapi.bot.ktor
 import dev.inmo.tgbotapi.requests.abstracts.Request
 
 interface TelegramBotPipelinesHandler {
+    /**
+     * Will be called when any exception will happen due to the [request] handling inside of limiter block. This method
+     * will be called for each exception happened during call factory call
+     */
+    suspend fun <T: Any> onRequestExceptionInLimiter(
+        request: Request<T>,
+        t: Throwable
+    ): T? = null
+
     /**
      * Will be called when any exception will happen due to the [request] handling. If returns value - that value
-     * will be returned from [dev.inmo.tgbotapi.bot.RequestsExecutor.execute] instead
+     * will be returned from [dev.inmo.tgbotapi.bot.RequestsExecutor.execute] instead. In difference with
+     * [onRequestExceptionInLimiter], this method will be called only AFTER
+     * [dev.inmo.tgbotapi.bot.settings.limiters.RequestLimiter] will pass result of call factory execution outside of
+     * its [dev.inmo.tgbotapi.bot.settings.limiters.RequestLimiter.limit] function
+     *
+     * @see dev.inmo.tgbotapi.bot.ktor.base.DefaultKtorRequestsExecutor
+     * @see dev.inmo.tgbotapi.bot.settings.limiters.ExceptionsOnlyLimiter
      */
     suspend fun <T: Any> onRequestException(
         request: Request<T>,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/DefaultKtorRequestsExecutor.kt

@@ -53,29 +53,33 @@ class DefaultKtorRequestsExecutor internal constructor(
             logger.v { "Start request $request" }
             pipelineStepsHolder.onBeforeSearchCallFactory(request, callsFactories)
             requestsLimiter.limit(request) {
-                var result: T? = null
+                runCatching {
-                lateinit var factoryHandledRequest: KtorCallFactory
+                    var result: T? = null
-                for (potentialFactory in callsFactories) {
+                    lateinit var factoryHandledRequest: KtorCallFactory
-                    pipelineStepsHolder.onBeforeCallFactoryMakeCall(request, potentialFactory)
+                    for (potentialFactory in callsFactories) {
-                    logger.v { "Trying factory $potentialFactory for $request" }
+                        pipelineStepsHolder.onBeforeCallFactoryMakeCall(request, potentialFactory)
-                    val resultFromFactory = potentialFactory.makeCall(
+                        logger.v { "Trying factory $potentialFactory for $request" }
-                        client,
+                        val resultFromFactory = potentialFactory.makeCall(
-                        telegramAPIUrlsKeeper,
+                            client,
-                        request,
+                            telegramAPIUrlsKeeper,
-                        jsonFormatter
+                            request,
-                    )
+                            jsonFormatter
-                    logger.v { "Result of factory $potentialFactory handling $request: $resultFromFactory" }
+                        )
-                    result = pipelineStepsHolder.onAfterCallFactoryMakeCall(resultFromFactory, request, potentialFactory)
+                        logger.v { "Result of factory $potentialFactory handling $request: $resultFromFactory" }
-                    logger.v { "Result of pipeline $pipelineStepsHolder handling $resultFromFactory: $result" }
+                        result = pipelineStepsHolder.onAfterCallFactoryMakeCall(resultFromFactory, request, potentialFactory)
-                    if (result != null) {
+                        logger.v { "Result of pipeline $pipelineStepsHolder handling $resultFromFactory: $result" }
-                        factoryHandledRequest = potentialFactory
+                        if (result != null) {
-                        break
+                            factoryHandledRequest = potentialFactory
+                            break
+                        }
                     }
-                }
 
-                result ?.let {
+                    result ?.let {
-                    pipelineStepsHolder.onRequestResultPresented(it, request, factoryHandledRequest, callsFactories)
+                        pipelineStepsHolder.onRequestResultPresented(it, request, factoryHandledRequest, callsFactories)
-                } ?: pipelineStepsHolder.onRequestResultAbsent(request, callsFactories) ?: error("Can't execute request: $request")
+                    } ?: pipelineStepsHolder.onRequestResultAbsent(request, callsFactories) ?: error("Can't execute request: $request")
+                }.onFailure { e ->
+                    pipelineStepsHolder.onRequestExceptionInLimiter(request, e) ?.let { return@let it } ?: throw e
+                }.getOrThrow()
             }
         }.let {
             val result = it.exceptionOrNull() ?.let { e ->

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddleware.kt

@@ -31,9 +31,16 @@ open class TelegramBotMiddleware(
     internal val onRequestResultPresented: (suspend (result: Any, request: Request<*>, resultCallFactory: KtorCallFactory, callsFactories: List<KtorCallFactory>) -> Any?)? = null,
     internal val onRequestResultAbsent: (suspend (request: Request<*>, callsFactories: List<KtorCallFactory>) -> Any?)? = null,
     internal val onRequestReturnResult: (suspend (result: Result<*>, request: Request<*>, callsFactories: List<KtorCallFactory>) -> Result<Any?>?)? = null,
+    internal val onRequestExceptionInLimiter: (suspend (request: Request<*>, t: Throwable?) -> Any?)? = null,
     val id: String = uuid4().toString()
 ) : TelegramBotPipelinesHandler {
     object ResultAbsence : Throwable()
+
+    override suspend fun <T : Any> onRequestExceptionInLimiter(request: Request<T>, t: Throwable): T? {
+        @Suppress("UNCHECKED_CAST")
+        return onRequestExceptionInLimiter ?.invoke(request, t) as? T
+    }
+
     override suspend fun <T : Any> onRequestException(request: Request<T>, t: Throwable): T? {
         @Suppress("UNCHECKED_CAST")
         return onRequestException ?.invoke(request, t) as? T

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewareBuilder.kt

@@ -8,6 +8,7 @@ import dev.inmo.tgbotapi.requests.abstracts.Request
 
 @Warning("This API is experimental and subject of changes")
 class TelegramBotMiddlewareBuilder {
+    var onRequestExceptionInLimiter: (suspend (request: Request<*>, t: Throwable?) -> Any?)? = null
     var onRequestException: (suspend (request: Request<*>, t: Throwable?) -> Any?)? = null
     var onBeforeSearchCallFactory: (suspend (request: Request<*>, callsFactories: List<KtorCallFactory>) -> Unit)? = null
     var onBeforeCallFactoryMakeCall: (suspend (request: Request<*>, potentialFactory: KtorCallFactory) -> Unit)? = null
@@ -17,6 +18,12 @@ class TelegramBotMiddlewareBuilder {
     var onRequestReturnResult: (suspend (result: Result<*>, request: Request<*>, callsFactories: List<KtorCallFactory>) -> Result<Any?>?)? = null
     var id: String = uuid4().toString()
 
+    /**
+     * Useful way to set [onRequestException]
+     */
+    fun doOnRequestExceptionInLimiter(block: suspend (request: Request<*>, t: Throwable?) -> Any?) {
+        onRequestExceptionInLimiter = block
+    }
     /**
      * Useful way to set [onRequestException]
      */
@@ -63,6 +70,7 @@ class TelegramBotMiddlewareBuilder {
     @Warning("This API is experimental and subject of changes")
     fun build(): TelegramBotMiddleware {
         return TelegramBotMiddleware(
+            onRequestExceptionInLimiter = onRequestExceptionInLimiter,
             onRequestException = onRequestException,
             onBeforeSearchCallFactory = onBeforeSearchCallFactory,
             onBeforeCallFactoryMakeCall = onBeforeCallFactoryMakeCall,
@@ -78,6 +86,7 @@ class TelegramBotMiddlewareBuilder {
         @Warning("This API is experimental and subject of changes")
         fun from(middleware: TelegramBotMiddleware, additionalSetup: TelegramBotMiddlewareBuilder.() -> Unit): TelegramBotMiddleware {
             return TelegramBotMiddlewareBuilder().apply {
+                onRequestExceptionInLimiter = middleware.onRequestExceptionInLimiter
                 onRequestException = middleware.onRequestException
                 onBeforeSearchCallFactory = middleware.onBeforeSearchCallFactory
                 onBeforeCallFactoryMakeCall = middleware.onBeforeCallFactoryMakeCall

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/middlewares/TelegramBotMiddlewaresPipelinesHandler.kt

@@ -10,6 +10,12 @@ import dev.inmo.tgbotapi.requests.abstracts.Request
 class TelegramBotMiddlewaresPipelinesHandler(
     private val middlewares: List<TelegramBotMiddleware> = emptyList()
 ) : TelegramBotPipelinesHandler {
+    override suspend fun <T : Any> onRequestExceptionInLimiter(request: Request<T>, t: Throwable): T? {
+        return middlewares.firstNotNullOfOrNull {
+            it.onRequestExceptionInLimiter(request, t)
+        } ?: super.onRequestExceptionInLimiter(request, t)
+    }
+
     override suspend fun <T : Any> onRequestException(request: Request<T>, t: Throwable): T? {
         return middlewares.firstNotNullOfOrNull {
             it.onRequestException(request, t)

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/settings/limiters/ExceptionsOnlyLimiter.kt

@@ -1,6 +1,8 @@
 package dev.inmo.tgbotapi.bot.settings.limiters
 
 import dev.inmo.tgbotapi.bot.exceptions.TooMuchRequestsException
+import dev.inmo.tgbotapi.utils.isCausedUnresolvedAddressException
+import io.ktor.util.network.UnresolvedAddressException
 import kotlinx.coroutines.delay
 
 /**
@@ -13,10 +15,10 @@ object ExceptionsOnlyLimiter : RequestLimiter {
             result = runCatching {
                 block()
             }.onFailure {
-                if (it is TooMuchRequestsException) {
+                when {
-                    delay(it.retryAfter.leftToRetry)
+                    it.isCausedUnresolvedAddressException() -> delay(1000L)
-                } else {
+                    it is TooMuchRequestsException -> delay(it.retryAfter.leftToRetry)
-                    throw it
+                    else -> throw it
                 }
             }
         }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/CausedBy.kt

@@ -0,0 +1,15 @@
+package dev.inmo.tgbotapi.utils
+
+import kotlin.reflect.KClass
+
+fun <T : Throwable> Throwable.causedBy(kclass: KClass<T>, additionalFilterOnHappened: (T) -> T? = { it }): T? {
+    var current = this
+    while (kclass.isInstance(current) == false) {
+        when {
+            kclass.isInstance(current) -> return additionalFilterOnHappened(current as T)
+            else -> current = current.cause ?: return null
+        }
+    }
+
+    return current as T
+}

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/CausedByCancellation.kt

@@ -14,16 +14,9 @@ import kotlinx.coroutines.CancellationException
  * @return the first [CancellationException] found in the cause chain, or `null` if none present
  */
 fun Throwable.causedCancellationException(): CancellationException? {
-    var current = this
+    return causedBy(CancellationException::class) {
-    while (current !is CancellationException) {
+        it.takeIf { it.cause == null }
-        when {
-            // It is possible, that API will be changed and cancellation will be caused by something else
-            current is CancellationException && current.cause == null -> return current
-            else -> current = current.cause ?: return null
-        }
     }
-
-    return current
 }
 
 /**

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/CausedByUnresolvedAddressException.kt

@@ -0,0 +1,9 @@
+package dev.inmo.tgbotapi.utils
+
+import io.ktor.util.network.UnresolvedAddressException
+
+fun Throwable.causedUnresolvedAddressException(): UnresolvedAddressException? {
+    return causedBy(UnresolvedAddressException::class)
+}
+
+fun Throwable.isCausedUnresolvedAddressException(): Boolean = causedUnresolvedAddressException() != null

tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/updates/retrieving/LongPolling.kt

@@ -18,8 +18,11 @@ import dev.inmo.tgbotapi.updateshandlers.*
 import dev.inmo.tgbotapi.utils.DefaultKTgBotAPIKSLog
 import dev.inmo.tgbotapi.utils.causedCancellationException
 import dev.inmo.tgbotapi.utils.isCausedByCancellation
+import dev.inmo.tgbotapi.utils.isCausedUnresolvedAddressException
 import dev.inmo.tgbotapi.utils.subscribeWithBotLogger
+import io.ktor.client.network.sockets.ConnectTimeoutException
 import io.ktor.client.plugins.HttpRequestTimeoutException
+import io.ktor.util.network.UnresolvedAddressException
 import io.ktor.utils.io.CancellationException
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.*
@@ -127,12 +130,16 @@ fun TelegramBot.longPollingFlow(
             }.onFailure { e ->
                 runCatchingLogging(logger = Log) {
                     val isHttpRequestTimeoutException =
-                        e is HttpRequestTimeoutException || (e is CommonBotException && e.cause is HttpRequestTimeoutException)
+                        e is ConnectTimeoutException || e is HttpRequestTimeoutException || (e is CommonBotException && e.cause is HttpRequestTimeoutException)
                     if (isHttpRequestTimeoutException && autoSkipTimeoutExceptions) {
                         return@onFailure
                     }
+
                     exceptionsHandler?.invoke(e)
-                    if (e is RequestException) {
+
+                    // It seems some problems with internet connection. See https://github.com/InsanusMokrassar/ktgbotapi/issues/989
+                    val isUnresolvedAddressException = e.isCausedUnresolvedAddressException()
+                    if (e is RequestException || isUnresolvedAddressException) {
                         delay(1000L)
                     }
                 }