AlloPlace does semantic version compatibility check

Author: nevyn

Sources/allonet2/AlloClient.swift

@@ -216,7 +216,7 @@ open class AlloClient : AlloSessionDelegate, ObservableObject, Identifiable
                 type: .request,
                 senderEntityId: "",
                 receiverEntityId: Interaction.PlaceEntity,
-                body: .announce(version: "2.0", identity: identity, avatar: avatarDesc)
+                body: .announce(version: Allonet.version().description, identity: identity, avatar: avatarDesc)
             ))
             guard case .announceResponse(let avatarId, let placeName) = response.body else
             {

Sources/allonet2/PlaceServer.swift

@@ -7,6 +7,7 @@
 
 import Foundation
 import FlyingFox
+import Version
 
 public struct AppDescription
 {
@@ -365,9 +366,11 @@ public class PlaceServer : AlloSessionDelegate
             }
 
         case .announce(let version, let identity, let avatarDescription):
-            // TODO: Since we added authentication, should the version go up?
-            guard version == "2.0" else {
-                print("Client \(client.cid) has incompatible version, disconnecting.")
+            guard
+                let semantic = Version(version),
+                Allonet.version().serverIsCompatibleWith(clientVersion: semantic)
+            else {
+                print("Client \(client.cid) has incompatible version (server \(Allonet.version()), client \(version)), disconnecting.")
                 client.session.disconnect()
                 return
             }

Sources/allonet2/allonet2.swift

@@ -49,3 +49,13 @@ extension PackageBuild
 
     }
 }
+
+extension Version
+{
+    func serverIsCompatibleWith(clientVersion: Version) -> Bool
+    {
+        return
+            major == clientVersion.major &&
+            minor == clientVersion.minor
+    }
+}