Add SipSorcery as submodule.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "sipsorcery"]
+	path = sipsorcery
+	url = https://github.com/lucent-sea/sipsorcery

Desktop.Core/Desktop.Core.csproj

@@ -47,12 +47,12 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.EventLog" Version="5.0.0" />
     <PackageReference Include="System.Drawing.Common" Version="5.0.2" />
-    <PackageReference Include="SIPSorcery" Version="5.1.8-pre" />
     <PackageReference Include="System.IO.FileSystem.AccessControl" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\Shared\Shared.csproj" />
+    <ProjectReference Include="..\sipsorcery\src\SIPSorcery.csproj" />
   </ItemGroup>
 
   <ItemGroup>

Desktop.Core/Services/WebRtcSession.cs

@@ -98,10 +98,11 @@ public async Task Init(IceServerModel[] iceServers)
 
 
 
-        public Task SendDto<T>(T dto) where T : BaseDto
+        public async Task SendDto<T>(T dto) where T : BaseDto
         {
             CaptureChannel.send(MessagePackSerializer.Serialize(dto));
-            return Task.CompletedTask;
+
+            await TaskHelper.DelayUntilAsync(() => CaptureChannel.bufferedAmount < 64_000, TimeSpan.FromSeconds(5));
         }
 
         public Task SetRemoteDescription(string type, string sdp)

Remotely.sln

@@ -50,6 +50,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server", "Server\Server.csp
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server.Installer", "Server.Installer\Server.Installer.csproj", "{BE7799D6-204C-4D35-83E7-7FB24DEBAE94}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SIPSorcery", "sipsorcery\src\SIPSorcery.csproj", "{D7ADE65F-0E85-472F-9D38-DE78059E34D1}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -180,6 +182,18 @@ Global
 		{BE7799D6-204C-4D35-83E7-7FB24DEBAE94}.Release|x64.Build.0 = Release|Any CPU
 		{BE7799D6-204C-4D35-83E7-7FB24DEBAE94}.Release|x86.ActiveCfg = Release|Any CPU
 		{BE7799D6-204C-4D35-83E7-7FB24DEBAE94}.Release|x86.Build.0 = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|x64.Build.0 = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Debug|x86.Build.0 = Debug|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|x64.ActiveCfg = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|x64.Build.0 = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|x86.ActiveCfg = Release|Any CPU
+		{D7ADE65F-0E85-472F-9D38-DE78059E34D1}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE