Index: src/XMPPJID.h
==================================================================
--- src/XMPPJID.h
+++ src/XMPPJID.h
@@ -24,11 +24,11 @@
 #import <ObjFW/ObjFW.h>
 
 /**
  * \brief A class for easy handling of JIDs.
  */
-@interface XMPPJID: OFObject
+@interface XMPPJID: OFObject <OFCopying>
 {
 	/// The JID's localpart
 	OFString *node;
 	/// The JID's domainpart
 	OFString *domain;

Index: src/XMPPJID.m
==================================================================
--- src/XMPPJID.m
+++ src/XMPPJID.m
@@ -65,10 +65,26 @@
 	[self setDomain: [str substringFromIndex: nodesep + 1
 					 toIndex: resourcesep]];
 
 	return self;
 }
+
+- copy
+{
+	XMPPJID *new = [[XMPPJID alloc] init];
+
+	@try {
+		new->node = [node copy];
+		new->domain = [domain copy];
+		new->resource = [resource copy];
+	} @catch (id e) {
+		[new release];
+		@throw e;
+	}
+
+	return new;
+}
 
 - (void)setNode: (OFString*)node_
 {
 	OFString *old = node;
 	char *nodepart;