add info about .jar files

README.md

@@ -0,0 +1,42 @@
+Shipped .jar files are created by me. 
+
+You can recreate them like this:
+
+## .viaproxy/plugins/ViaProxyOpenAuthMod.jar
+This is completely unchanged `https://github.com/ViaVersionAddons/ViaProxyOpenAuthMod/releases/download/v1.0.2/ViaProxyOpenAuthMod-1.0.2.jar`.
+Check for yourself:
+
+```
+sha256sum .viaproxy/plugins/ViaProxyOpenAuthMod.jar
+# 95085aac381ae92fc45d476732958b826254be4fbe2876f2d8b619b2373898fe  .viaproxy/plugins/ViaProxyOpenAuthMod.jar
+curl -L https://github.com/ViaVersionAddons/ViaProxyOpenAuthMod/releases/download/v1.0.2/ViaProxyOpenAuthMod-1.0.2.jar | sha256sum
+# 95085aac381ae92fc45d476732958b826254be4fbe2876f2d8b619b2373898fe  -
+```
+
+## .viaproxy/ViaProxy.jar
+1. go into viaproxy
+2. `src/main/java/net/raphimc/viaproxy/proxy/util/ExceptionUtil.java`
+3. modify `ExceptionUtil.handleNettyException`
+4. ```java
+    public static void handleNettyException(ChannelHandlerContext ctx, Throwable cause, ProxyConnection proxyConnection, boolean client2Proxy) {
+        if (!ctx.channel().isOpen()) return;
+        if (cause instanceof ClosedChannelException) return;
+        if (cause instanceof CloseAndReturn) {
+            ctx.channel().close();
+            return;
+        }
+        if (!client2Proxy || !ViaProxy.getConfig().shouldSuppressClientProtocolErrors()) {
+            Logger.LOGGER.error("Caught unhandled netty exception", cause);
+            // @SOPHER CHANGE START
+            //try {
+            //    if (proxyConnection != null) {
+            //        proxyConnection.kickClient("§cAn unhandled error occurred in your connection and it has been closed.\n§aError details for report:§f" + ExceptionUtil.prettyPrint(cause));
+            //    }
+            //} catch (Throwable ignored) {
+            //}
+        }
+        // literally never close
+        //ctx.channel().close();
+        // @SOPHER CHANGE END
+    }
+```