Index: src/OFHTTPRequest.m
==================================================================
--- src/OFHTTPRequest.m
+++ src/OFHTTPRequest.m
@@ -23,10 +23,11 @@
 #import "OFURL.h"
 #import "OFTCPSocket.h"
 #import "OFDictionary.h"
 #import "OFAutoreleasePool.h"
 #import "OFExceptions.h"
+#import "macros.h"
 
 Class of_http_request_tls_socket_class = Nil;
 
 @implementation OFHTTPRequest
 + request
@@ -56,18 +57,16 @@
 	[super dealloc];
 }
 
 - (void)setURL: (OFURL*)url
 {
-	OFURL *old = URL;
-	URL = [url copy];
-	[old release];
+	OF_SETTER(URL, url, YES, YES)
 }
 
 - (OFURL*)URL
 {
-	return [[URL copy] autorelease];
+	OF_GETTER(URL, YES)
 }
 
 - (void)setRequestType: (of_http_request_type_t)type
 {
 	requestType = type;
@@ -78,30 +77,26 @@
 	return requestType;
 }
 
 - (void)setQueryString: (OFString*)qs
 {
-	OFString *old = queryString;
-	queryString = [qs copy];
-	[old release];
+	OF_SETTER(queryString, qs, YES, YES)
 }
 
 - (OFString*)queryString
 {
-	return [[queryString copy] autorelease];
+	OF_GETTER(queryString, YES)
 }
 
 - (void)setHeaders: (OFDictionary*)headers_
 {
-	OFDictionary *old = headers;
-	headers = [headers_ copy];
-	[old release];
+	OF_SETTER(headers, headers_, YES, YES)
 }
 
 - (OFDictionary*)headers
 {
-	return [[headers copy] autorelease];
+	OF_GETTER(headers, YES)
 }
 
 - (OFHTTPRequestResult*)perform
 {
 	return [self performWithRedirects: 10];

Index: src/OFObject.h
==================================================================
--- src/OFObject.h
+++ src/OFObject.h
@@ -410,9 +410,11 @@
 @end
 
 #ifdef __cplusplus
 extern "C" {
 #endif
+extern id objc_getProperty(id, SEL, ptrdiff_t, BOOL);
+extern void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL);
 extern size_t of_pagesize;
 #ifdef __cplusplus
 }
 #endif

Index: src/OFURL.m
==================================================================
--- src/OFURL.m
+++ src/OFURL.m
@@ -371,11 +371,11 @@
 	return new;
 }
 
 - (OFString*)scheme
 {
-	return [[scheme copy] autorelease];
+	OF_GETTER(scheme, YES)
 }
 
 - (void)setScheme: (OFString*)scheme_
 {
 	if (![scheme_ isEqual: @"http"] && ![scheme_ isEqual: @"https"])
@@ -387,18 +387,16 @@
 	[old release];
 }
 
 - (OFString*)host
 {
-	return [[host copy] autorelease];
+	OF_GETTER(host, YES)
 }
 
 - (void)setHost: (OFString*)host_
 {
-	OFString *old = host;
-	host = [host_ copy];
-	[old release];
+	OF_SETTER(host, host_, YES, YES)
 }
 
 - (uint16_t)port
 {
 	return port;
@@ -409,35 +407,31 @@
 	port = port_;
 }
 
 - (OFString*)user
 {
-	return [[user copy] autorelease];
+	OF_GETTER(user, YES)
 }
 
 - (void)setUser: (OFString*)user_
 {
-	OFString *old = user;
-	user = [user_ copy];
-	[old release];
+	OF_SETTER(user, user_, YES, YES)
 }
 
 - (OFString*)password
 {
-	return [[password copy] autorelease];
+	OF_GETTER(password, YES)
 }
 
 - (void)setPassword: (OFString*)password_
 {
-	OFString *old = password;
-	password = [password_ copy];
-	[old release];
+	OF_SETTER(password, password_, YES, YES)
 }
 
 - (OFString*)path
 {
-	return [[path copy] autorelease];
+	OF_GETTER(path, YES)
 }
 
 - (void)setPath: (OFString*)path_
 {
 	OFString *old;
@@ -452,42 +446,36 @@
 	[old release];
 }
 
 - (OFString*)parameters
 {
-	return [[parameters copy] autorelease];
+	OF_GETTER(parameters, YES)
 }
 
 - (void)setParameters: (OFString*)parameters_
 {
-	OFString *old = parameters;
-	parameters = [parameters_ copy];
-	[old release];
+	OF_SETTER(parameters, parameters_, YES, YES)
 }
 
 - (OFString*)query
 {
-	return [[query copy] autorelease];
+	OF_GETTER(query, YES)
 }
 
 - (void)setQuery: (OFString*)query_
 {
-	OFString *old = query;
-	query = [query_ copy];
-	[old release];
+	OF_SETTER(query, query_, YES, YES)
 }
 
 - (OFString*)fragment
 {
-	return [[fragment copy] autorelease];
+	OF_GETTER(fragment, YES)
 }
 
 - (void)setFragment: (OFString*)fragment_
 {
-	OFString *old = fragment;
-	fragment = [fragment_ copy];
-	[old release];
+	OF_SETTER(fragment, fragment_, YES, YES)
 }
 
 - (OFString*)description
 {
 	OFMutableString *desc = [OFMutableString stringWithFormat: @"%@://",

Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -69,10 +69,16 @@
 # define OF_PATH_DELIM '/'
 #else
 # define OF_PATH_DELIM '\\'
 #endif
 
+#define OF_IVAR_OFFSET(ivar) ((char*)&ivar - (char*)self)
+#define OF_GETTER(ivar, atomic) \
+	return objc_getProperty(self, _cmd, OF_IVAR_OFFSET(ivar), atomic);
+#define OF_SETTER(ivar, value, atomic, copy) \
+	objc_setProperty(self, _cmd, OF_IVAR_OFFSET(ivar), value, atomic, copy);
+
 static OF_INLINE uint16_t OF_CONST_FUNC
 of_bswap16_const(uint16_t i)
 {
 	return (i & UINT16_C(0xFF00)) >> 8 |
 	    (i & UINT16_C(0x00FF)) << 8;