From 71d54e2dc323db42ca7a428ba14c1a2a40c7cd25 Mon Sep 17 00:00:00 2001
From: Davide De Rosa <keeshux@gmail.com>
Date: Mon, 25 Mar 2019 10:07:57 +0100
Subject: [PATCH] Send IV_LZO only if supported

---
 .../Sources/Core/CoreConfiguration.swift      | 27 +++++++++++--------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/TunnelKit/Sources/Core/CoreConfiguration.swift b/TunnelKit/Sources/Core/CoreConfiguration.swift
index 19db18e..28401a8 100644
--- a/TunnelKit/Sources/Core/CoreConfiguration.swift
+++ b/TunnelKit/Sources/Core/CoreConfiguration.swift
@@ -77,17 +77,22 @@ struct CoreConfiguration {
 
     // MARK: Authentication
     
-    static let peerInfo = [
-        "IV_VER=2.4",
-        "IV_PLAT=mac",
-        "IV_UI_VER=\(identifier) \(version)",
-        "IV_PROTO=2",
-        "IV_NCP=2",
-        "IV_SSL=\(CryptoBox.version())",
-        "IV_LZO=1",
-        "IV_LZO_STUB=1",
-        ""
-    ].joined(separator: "\n")
+    static let peerInfo: String = {
+        var info = [
+            "IV_VER=2.4",
+            "IV_PLAT=mac",
+            "IV_UI_VER=\(identifier) \(version)",
+            "IV_PROTO=2",
+            "IV_NCP=2",
+            "IV_SSL=\(CryptoBox.version())",
+            "IV_LZO_STUB=1",
+        ]
+        if LZOIsSupported() {
+            info.append("IV_LZO=1")
+        }
+        info.append("")
+        return info.joined(separator: "\n")
+    }()
     
     static let randomLength = 32