Expose RemoteAddress on IChannel for session-IP consumers (#130)

Needed so hosts can correlate a ClientSession to its peer IP without
reaching into SuperSocket internals. NetworkChannel resolves it via
IPEndPoint.Address; returns null when the underlying session has no
routable endpoint.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: erwan-joly

src/NosCore.Networking/IChannel.cs

@@ -19,6 +19,12 @@ public interface IChannel
         /// </summary>
         string Id { get; }
 
+        /// <summary>
+        /// Gets the remote peer's IP address as a string, or null if the
+        /// underlying session has no routable endpoint yet.
+        /// </summary>
+        string? RemoteAddress { get; }
+
         /// <summary>
         /// Disconnects the channel asynchronously.
         /// </summary>

src/NosCore.Networking/NetworkChannel.cs

@@ -5,6 +5,7 @@
 // -----------------------------------
 
 using System;
+using System.Net;
 using System.Threading.Tasks;
 using SuperSocket.Connection;
 using SuperSocket.Server.Abstractions.Session;
@@ -32,6 +33,12 @@ public NetworkChannel(IAppSession session)
         /// </summary>
         public string Id => _session.SessionID;
 
+        /// <summary>
+        /// Gets the remote peer's IP address as a string, or null if the
+        /// underlying session has no routable endpoint yet.
+        /// </summary>
+        public string? RemoteAddress => (_session.RemoteEndPoint as IPEndPoint)?.Address.ToString();
+
         /// <summary>
         /// Disconnects the channel asynchronously.
         /// </summary>

src/NosCore.Networking/NosCore.Networking.csproj

@@ -12,7 +12,7 @@
 		<RepositoryUrl>https://github.com/NosCoreIO/NosCore.Networking.git</RepositoryUrl>
 		<PackageIconUrl></PackageIconUrl>
 		<PackageTags>nostale, noscore, nostale private server source, nostale emulator</PackageTags>
-		<Version>7.1.0</Version>
+		<Version>7.2.0</Version>
 		<PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
 		<Description>NosCore Networking</Description>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>