Fix large sized pubsub message transfer

.azure/pipelines/azure-pipelines-external-release.yml

@@ -1,9 +1,10 @@
 ######################################
 # NOTE: Before running this pipeline to generate a new nuget package, update the version string in two places
-#      1) update the name: string below (line 6)     -- this is the version for the nuget package (e.g. 1.0.0)
+#      1) update the name: string below (line 7)     -- this is the version for the nuget package (e.g. 1.0.0)
 #      2) update \libs\host\GarnetServer.cs readonly string version  (~line 32)   -- NOTE - these two values need to be the same 
+#      3) update the version in GarnetServer.csproj (~line 8) 
 ###################################### 
-name: 1.0.36
+name: 1.0.37
 trigger:
   branches:
     include:

libs/host/GarnetServer.cs

@@ -28,8 +28,8 @@ namespace Garnet
     /// </summary>
     public class GarnetServer : IDisposable
     {
-        // IMPORTANT: Keep the version in sync with .azure\pipelines\azure-pipelines-external-release.yml line ~6.
-        readonly string version = "1.0.36";
+        // IMPORTANT: Keep the version in sync with .azure\pipelines\azure-pipelines-external-release.yml line ~7 and GarnetServer.csproj line ~8.
+        readonly string version = "1.0.37";
 
         internal GarnetProvider Provider;
 

libs/server/Resp/RespServerSession.cs

@@ -1039,6 +1039,7 @@ private void WriteDirectLarge(ReadOnlySpan<byte> src)
 
                 // Adjust number of bytes to copy, to space left on output buffer, then copy
                 src.Slice(0, destSpace).CopyTo(new Span<byte>(dcurr, destSpace));
+                dcurr += destSpace;
                 src = src.Slice(destSpace);
 
                 // Send and reset output buffer

main/GarnetServer/GarnetServer.csproj

@@ -4,8 +4,8 @@
     <OutputType>Exe</OutputType>
     <ServerGarbageCollection>true</ServerGarbageCollection>
 
-    <!-- IMPORTANT: Keep the version in sync with .azure\pipelines\azure-pipelines-external-release.yml line ~6. -->
-    <Version>1.0.36</Version>
+    <!-- IMPORTANT: Keep the version in sync with .azure\pipelines\azure-pipelines-external-release.yml line ~7 and GarnetServer.cs line ~32. -->
+    <Version>1.0.37</Version>
     <PackageId>garnet-server</PackageId>
     <PackAsTool>true</PackAsTool>
     <ToolCommandName>garnet-server</ToolCommandName>

test/Garnet.test/RespPubSubTests.cs

@@ -3,8 +3,8 @@
 
 using System;
 using System.Linq;
+using System.Security.Cryptography;
 using System.Threading;
-using System.Threading.Channels;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using StackExchange.Redis;
@@ -20,7 +20,7 @@ class RespPubSubTests
         public void Setup()
         {
             TestUtils.DeleteDirectory(TestUtils.MethodTestDir, wait: true);
-            server = TestUtils.CreateGarnetServer(TestUtils.MethodTestDir);
+            server = TestUtils.CreateGarnetServer(TestUtils.MethodTestDir, pubSubPageSize: "256k");
             server.Start();
         }
 
@@ -52,6 +52,27 @@ public void BasicSUBSCRIBE()
             sub.Unsubscribe(RedisChannel.Literal("messages"));
         }
 
+        [Test]
+        public void LargeSUBSCRIBE()
+        {
+            using var subRedis = ConnectionMultiplexer.Connect(TestUtils.GetConfig());
+            using var redis = ConnectionMultiplexer.Connect(TestUtils.GetConfig());
+            var sub = subRedis.GetSubscriber();
+            var db = redis.GetDatabase(0);
+            RedisValue value = RandomNumberGenerator.GetBytes(140 * 1024);
+
+            ManualResetEvent evt = new(false);
+
+            SubscribeAndPublish(sub, db, RedisChannel.Literal("messages"), RedisChannel.Literal("messages"), value, onSubscribe: (channel, message) =>
+            {
+                ClassicAssert.AreEqual("messages", (string)channel);
+                ClassicAssert.AreEqual(value, (string)message);
+                evt.Set();
+            });
+
+            sub.Unsubscribe(RedisChannel.Literal("messages"));
+        }
+
         [Test]
         public void BasicPSUBSCRIBE()
         {
@@ -180,9 +201,12 @@ public void BasicPUBSUB_NUMSUB()
             sub.Unsubscribe(RedisChannel.Literal("messagesB"));
         }
 
-        private void SubscribeAndPublish(ISubscriber sub, IDatabase db, RedisChannel channel, RedisChannel? publishChannel = null, string message = null, Action<RedisChannel, RedisValue> onSubscribe = null)
+        private void SubscribeAndPublish(ISubscriber sub, IDatabase db, RedisChannel channel, RedisChannel? publishChannel = null, RedisValue? message = null, Action<RedisChannel, RedisValue> onSubscribe = null)
         {
-            message ??= "published message";
+            if (!message.HasValue)
+            {
+                message = "published message";
+            }
             publishChannel ??= channel;
             ManualResetEvent evt = new(false);
             sub.Subscribe(channel, (receivedChannel, receivedMessage) =>
@@ -197,7 +221,7 @@ private void SubscribeAndPublish(ISubscriber sub, IDatabase db, RedisChannel cha
             int repeat = 5;
             while (true)
             {
-                db.Publish(publishChannel.Value, message);
+                db.Publish(publishChannel.Value, message.Value);
                 var ret = evt.WaitOne(TimeSpan.FromSeconds(1));
                 if (ret) break;
                 repeat--;

test/Garnet.test/TestUtils.cs

@@ -201,7 +201,8 @@ public static GarnetServer CreateGarnetServer(
             IAuthenticationSettings authenticationSettings = null,
             bool enableLua = false,
             ILogger logger = null,
-            IEnumerable<string> loadModulePaths = null)
+            IEnumerable<string> loadModulePaths = null,
+            string pubSubPageSize = null)
         {
             if (UseAzureStorage)
                 IgnoreIfNotRunningAzureTests();
@@ -280,6 +281,9 @@ public static GarnetServer CreateGarnetServer(
                 LoadModuleCS = loadModulePaths
             };
 
+            if (!string.IsNullOrEmpty(pubSubPageSize))
+                opts.PubSubPageSize = pubSubPageSize;
+
             if (!string.IsNullOrEmpty(objectStoreHeapMemorySize))
                 opts.ObjectStoreHeapMemorySize = objectStoreHeapMemorySize;