diff --git a/app/src/main/java/com/hippo/ehviewer/client/EhEngine.kt b/app/src/main/java/com/hippo/ehviewer/client/EhEngine.kt
index 1e044a090..552ce426a 100644
--- a/app/src/main/java/com/hippo/ehviewer/client/EhEngine.kt
+++ b/app/src/main/java/com/hippo/ehviewer/client/EhEngine.kt
@@ -18,7 +18,6 @@ package com.hippo.ehviewer.client
 import android.util.Log
 import arrow.fx.coroutines.parZip
 import com.hippo.ehviewer.AppConfig
-import com.hippo.ehviewer.EhApplication
 import com.hippo.ehviewer.GetText
 import com.hippo.ehviewer.R
 import com.hippo.ehviewer.Settings
@@ -55,13 +54,11 @@ import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.MultipartBody
 import okhttp3.Request
 import okhttp3.RequestBody.Companion.asRequestBody
-import okhttp3.executeAsync
 import org.json.JSONArray
 import org.jsoup.Jsoup
 import java.io.File
 import kotlin.math.ceil
 
-private val okHttpClient = EhApplication.okHttpClient
 private const val TAG = "EhEngine"
 private const val MAX_REQUEST_SIZE = 25
 private const val SAD_PANDA_DISPOSITION = "inline; filename=\"sadpanda.jpg\""
@@ -120,12 +117,12 @@ private fun rethrowExactly(code: Int, headers: Headers, body: String, e: Throwab
 
 private suspend inline fun <T> Request.executeAndParsingWith(block: String.() -> T): T {
     Log.d(TAG, url.toString())
-    return okHttpClient.newCall(this).executeAsync().use { response ->
-        val body = response.body.string()
+    return execute {
+        val body = body.string()
         try {
             block(body)
         } catch (e: Exception) {
-            rethrowExactly(response.code, response.headers, body, e)
+            rethrowExactly(code, headers, body, e)
         }
     }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
index f1f5221ab..d8198df00 100644
--- a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
+++ b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
@@ -15,14 +15,20 @@
  */
 package com.hippo.ehviewer.client
 
+import com.hippo.ehviewer.EhApplication.Companion.nonCacheOkHttpClient
+import com.hippo.ehviewer.EhApplication.Companion.okHttpClient
 import okhttp3.FormBody
 import okhttp3.MediaType
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.MultipartBody
 import okhttp3.Request
 import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.Response
+import okhttp3.executeAsync
 import org.json.JSONArray
 import org.json.JSONObject
+import kotlin.contracts.InvocationKind
+import kotlin.contracts.contract
 
 inline fun ehRequest(url: String, referer: String? = null, origin: String? = null, builder: Request.Builder.() -> Unit = {}) = Request.Builder().url(url).apply {
     addHeader("User-Agent", CHROME_USER_AGENT)
@@ -44,6 +50,20 @@ fun jsonArrayOf(vararg element: Any?) = JSONArray().apply { element.forEach { pu
 
 inline fun Request.Builder.jsonBody(builder: JSONObject.() -> Unit) = post(JSONObject().apply(builder).toString().toRequestBody(MEDIA_TYPE_JSON))
 
+suspend inline fun <R> Request.execute(block: Response.() -> R): R {
+    contract {
+        callsInPlace(block, InvocationKind.EXACTLY_ONCE)
+    }
+    return okHttpClient.newCall(this).executeAsync().use(block)
+}
+
+suspend inline fun <R> Request.executeNonCache(block: Response.() -> R): R {
+    contract {
+        callsInPlace(block, InvocationKind.EXACTLY_ONCE)
+    }
+    return nonCacheOkHttpClient.newCall(this).executeAsync().use(block)
+}
+
 const val CHROME_USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36"
 const val CHROME_ACCEPT = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"
 const val CHROME_ACCEPT_LANGUAGE = "en-US,en;q=0.5"
diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
index acf22dc01..f2b02bbed 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
@@ -18,12 +18,12 @@ package com.hippo.ehviewer.spider
 import android.graphics.ImageDecoder
 import android.os.ParcelFileDescriptor
 import android.os.ParcelFileDescriptor.MODE_READ_WRITE
-import com.hippo.ehviewer.EhApplication.Companion.nonCacheOkHttpClient
 import com.hippo.ehviewer.EhDB
 import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.EhUtils.getSuitableTitle
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.client.ehRequest
+import com.hippo.ehviewer.client.executeNonCache
 import com.hippo.ehviewer.client.getImageKey
 import com.hippo.ehviewer.coil.edit
 import com.hippo.ehviewer.coil.read
@@ -38,7 +38,6 @@ import kotlinx.coroutines.currentCoroutineContext
 import kotlinx.coroutines.ensureActive
 import moe.tarsin.coroutines.runSuspendCatching
 import okhttp3.Response
-import okhttp3.executeAsync
 import okio.buffer
 import okio.sink
 import java.io.IOException
@@ -136,9 +135,9 @@ class SpiderDen(private val mGalleryInfo: GalleryInfo) {
     ): Boolean {
         // TODO: Use HttpEngine[https://developer.android.com/reference/android/net/http/HttpEngine] directly here if available
         // Since we don't want unnecessary copy between jvm heap & native heap
-        nonCacheOkHttpClient.newCall(ehRequest(url, referer)).executeAsync().use {
-            if (it.code >= 400) return false
-            return saveFromHttpResponse(index, it, notifyProgress)
+        ehRequest(url, referer).executeNonCache {
+            if (code >= 400) return false
+            return saveFromHttpResponse(index, this, notifyProgress)
         }
     }