Fix build for Windows (#1377) (#1506)

* Fix build for Windows (#1377)

* Add tests for windows

core/chat/utils_windows.go

@@ -0,0 +1,12 @@
+//go:build windows
+// +build windows
+
+package chat
+
+func getMaximumConcurrentConnectionLimit() int64 {
+	// The maximum limit I can find for windows is 16,777,216
+	// (essentially unlimited, but add the 0.7 multiplier as well to be
+	// consistent with other systems)
+	// https://docs.microsoft.com/en-gb/archive/blogs/markrussinovich/pushing-the-limits-of-windows-handles
+	return (16777216 * 7) / 10
+}