From 5291bea6a03f9b97ae49f37bc91241ee7f7ce29a Mon Sep 17 00:00:00 2001
From: Steveice10 <Steveice10@gmail.com>
Date: Sat, 30 May 2020 10:49:39 -0700
Subject: [PATCH] Add flag for printing DNS resolution errors.

---
 .../com/github/steveice10/packetlib/BuiltinFlags.java     | 8 ++++++++
 .../github/steveice10/packetlib/tcp/TcpClientSession.java | 4 ++++
 2 files changed, 12 insertions(+)
 create mode 100644 src/main/java/com/github/steveice10/packetlib/BuiltinFlags.java

diff --git a/src/main/java/com/github/steveice10/packetlib/BuiltinFlags.java b/src/main/java/com/github/steveice10/packetlib/BuiltinFlags.java
new file mode 100644
index 00000000..e433e82f
--- /dev/null
+++ b/src/main/java/com/github/steveice10/packetlib/BuiltinFlags.java
@@ -0,0 +1,8 @@
+package com.github.steveice10.packetlib;
+
+public class BuiltinFlags {
+    public static final String PRINT_DNS_ERRORS = "print-dns-errors";
+
+    private BuiltinFlags() {
+    }
+}
diff --git a/src/main/java/com/github/steveice10/packetlib/tcp/TcpClientSession.java b/src/main/java/com/github/steveice10/packetlib/tcp/TcpClientSession.java
index a67a19d0..a87288be 100644
--- a/src/main/java/com/github/steveice10/packetlib/tcp/TcpClientSession.java
+++ b/src/main/java/com/github/steveice10/packetlib/tcp/TcpClientSession.java
@@ -1,5 +1,6 @@
 package com.github.steveice10.packetlib.tcp;
 
+import com.github.steveice10.packetlib.BuiltinFlags;
 import com.github.steveice10.packetlib.Client;
 import com.github.steveice10.packetlib.ProxyInfo;
 import com.github.steveice10.packetlib.packet.PacketProtocol;
@@ -113,6 +114,9 @@ public class TcpClientSession extends TcpSession {
                                 port = srv.getPort();
                             }
                         } catch(TextParseException e) {
+                            if(getFlag(BuiltinFlags.PRINT_DNS_ERRORS, false)) {
+                                e.printStackTrace();
+                            }
                         }
 
                         bootstrap.remoteAddress(host, port);