diff --git a/app/src/main/java/org/thoughtcrime/securesms/jobs/AttachmentUploadJob.kt b/app/src/main/java/org/thoughtcrime/securesms/jobs/AttachmentUploadJob.kt
index 14087abe91..a792be7c18 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/jobs/AttachmentUploadJob.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/jobs/AttachmentUploadJob.kt
@@ -5,7 +5,9 @@
 package org.thoughtcrime.securesms.jobs
 
 import android.text.TextUtils
+import okhttp3.internal.http2.StreamResetException
 import org.greenrobot.eventbus.EventBus
+import org.signal.core.util.concurrent.SignalExecutors
 import org.signal.core.util.inRoundedDays
 import org.signal.core.util.logging.Log
 import org.signal.core.util.mebiBytes
@@ -23,6 +25,7 @@ import org.thoughtcrime.securesms.jobmanager.Job
 import org.thoughtcrime.securesms.jobmanager.impl.NetworkConstraint
 import org.thoughtcrime.securesms.jobmanager.persistence.JobSpec
 import org.thoughtcrime.securesms.jobs.protos.AttachmentUploadJobData
+import org.thoughtcrime.securesms.keyvalue.SignalStore
 import org.thoughtcrime.securesms.mms.MmsException
 import org.thoughtcrime.securesms.net.NotPushRegisteredException
 import org.thoughtcrime.securesms.recipients.Recipient
@@ -39,6 +42,7 @@ import java.util.Optional
 import java.util.concurrent.TimeUnit
 import kotlin.time.Duration.Companion.days
 import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration.Companion.minutes
 
 /**
  * Uploads an attachment without alteration.
@@ -56,6 +60,8 @@ class AttachmentUploadJob private constructor(
 
     private val TAG = Log.tag(AttachmentUploadJob::class.java)
 
+    private val NETWORK_RESET_THRESHOLD = 1.minutes.inWholeMilliseconds
+
     val UPLOAD_REUSE_THRESHOLD = 3.days.inWholeMilliseconds
 
     /**
@@ -162,6 +168,19 @@ class AttachmentUploadJob private constructor(
           ArchiveThumbnailUploadJob.enqueueIfNecessary(databaseAttachment.attachmentId)
         }
       }
+    } catch (e: StreamResetException) {
+      val lastReset = SignalStore.misc.lastNetworkResetDueToStreamResets
+      val now = System.currentTimeMillis()
+
+      if (lastReset > now || lastReset + NETWORK_RESET_THRESHOLD > now) {
+        Log.w(TAG, "Our existing connections is getting repeatedly denied by the server, reset network to establish new connections")
+        AppDependencies.resetNetwork()
+        SignalStore.misc.lastNetworkResetDueToStreamResets = now
+      } else {
+        Log.i(TAG, "Stream reset during upload, not resetting network yet, last reset: $lastReset")
+      }
+
+      throw e
     } catch (e: NonSuccessfulResumableUploadResponseCodeException) {
       if (e.code == 400) {
         Log.w(TAG, "Failed to upload due to a 400 when getting resumable upload information. Clearing upload spec.", e)
@@ -217,9 +236,18 @@ class AttachmentUploadJob private constructor(
         uploadSpec = resumableUploadSpec,
         cancellationSignal = { isCanceled },
         progressListener = object : SignalServiceAttachment.ProgressListener {
+          private var lastUpdate = 0L
+          private val updateRate = 500.milliseconds.inWholeMilliseconds
+
           override fun onAttachmentProgress(total: Long, progress: Long) {
-            EventBus.getDefault().postSticky(PartProgressEvent(attachment, PartProgressEvent.Type.NETWORK, total, progress))
-            notification?.progress = (progress.toFloat() / total)
+            val now = System.currentTimeMillis()
+            if (now < lastUpdate || lastUpdate + updateRate < now || progress >= total) {
+              SignalExecutors.BOUNDED_IO.execute {
+                EventBus.getDefault().postSticky(PartProgressEvent(attachment, PartProgressEvent.Type.NETWORK, total, progress))
+                notification?.progress = (progress.toFloat() / total)
+              }
+              lastUpdate = now
+            }
           }
 
           override fun shouldCancel(): Boolean {
diff --git a/app/src/main/java/org/thoughtcrime/securesms/keyvalue/MiscellaneousValues.kt b/app/src/main/java/org/thoughtcrime/securesms/keyvalue/MiscellaneousValues.kt
index 8c32330d4b..a5f4463233 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/keyvalue/MiscellaneousValues.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/keyvalue/MiscellaneousValues.kt
@@ -37,6 +37,7 @@ class MiscellaneousValues internal constructor(store: KeyValueStore) : SignalSto
     private const val LEAST_ACTIVE_LINKED_DEVICE = "misc.linked_device.least_active"
     private const val NEXT_DATABASE_ANALYSIS_TIME = "misc.next_database_analysis_time"
     private const val LOCK_SCREEN_ATTEMPT_COUNT = "misc.lock_screen_attempt_count"
+    private const val LAST_NETWORK_RESET_TIME = "misc.last_network_reset_time"
   }
 
   public override fun onFirstEverAppLaunch() {
@@ -258,4 +259,6 @@ class MiscellaneousValues internal constructor(store: KeyValueStore) : SignalSto
   fun incrementLockScreenAttemptCount() {
     lockScreenAttemptCount++
   }
+
+  var lastNetworkResetDueToStreamResets: Long by longValue(LAST_NETWORK_RESET_TIME, 0L)
 }
diff --git a/core-util-jvm/src/main/java/org/signal/core/util/StreamUtil.java b/core-util-jvm/src/main/java/org/signal/core/util/StreamUtil.java
index 2ac01b443e..466b57919a 100644
--- a/core-util-jvm/src/main/java/org/signal/core/util/StreamUtil.java
+++ b/core-util-jvm/src/main/java/org/signal/core/util/StreamUtil.java
@@ -106,6 +106,7 @@ public final class StreamUtil {
     }
 
     in.close();
+    out.flush();
     out.close();
 
     return total;
diff --git a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/http/DigestingRequestBody.kt b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/http/DigestingRequestBody.kt
index b1475a6978..85cf552d30 100644
--- a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/http/DigestingRequestBody.kt
+++ b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/http/DigestingRequestBody.kt
@@ -50,7 +50,7 @@ class DigestingRequestBody(
       outputStreamFactory.createFor(inner)
     }
 
-    val buffer = ByteArray(8192)
+    val buffer = ByteArray(16 * 1024)
     var read: Int
 
     while (inputStream.read(buffer, 0, buffer.size).also { read = it } != -1) {