Index: src/OFHTTPClient.m
==================================================================
--- src/OFHTTPClient.m
+++ src/OFHTTPClient.m
@@ -313,12 +313,11 @@
 	response.headers = _serverHeaders;
 
 	connectionHeader = [_serverHeaders objectForKey: @"Connection"];
 	if ([_version isEqual: @"1.1"]) {
 		if (connectionHeader != nil)
-			keepAlive = ([connectionHeader caseInsensitiveCompare:
-			    @"close"] != OF_ORDERED_SAME);
+			keepAlive = [connectionHeader isEqual: @"close"];
 		else
 			keepAlive = true;
 	} else {
 		if (connectionHeader != nil)
 			keepAlive = ([connectionHeader caseInsensitiveCompare:
@@ -693,11 +692,12 @@
 		uint16_t port;
 		OFNumber *URLPort;
 
 		[_client close];
 
-		if ([URL.scheme isEqual: @"https"]) {
+		if ([URL.scheme caseInsensitiveCompare: @"https"] ==
+		    OF_ORDERED_SAME) {
 			if (of_tls_socket_class == Nil)
 				@throw [OFUnsupportedProtocolException
 				    exceptionWithURL: URL];
 
 			sock = [[[of_tls_socket_class alloc] init] autorelease];
@@ -1245,11 +1245,12 @@
 {
 	void *pool = objc_autoreleasePoolPush();
 	OFURL *URL = request.URL;
 	OFString *scheme = URL.scheme;
 
-	if (![scheme isEqual: @"http"] && ![scheme isEqual: @"https"])
+	if ([scheme caseInsensitiveCompare: @"http"] != OF_ORDERED_SAME &&
+	    [scheme caseInsensitiveCompare: @"https"] != OF_ORDERED_SAME)
 		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];
 
 	if (_inProgress)
 		/* TODO: Find a better exception */
 		@throw [OFAlreadyConnectedException exception];

Index: src/OFHTTPCookieManager.m
==================================================================
--- src/OFHTTPCookieManager.m
+++ src/OFHTTPCookieManager.m
@@ -63,11 +63,12 @@
 	size_t i;
 
 	if (![cookie.path hasPrefix: @"/"])
 		cookie.path = @"/";
 
-	if (cookie.secure && ![URL.scheme isEqual: @"https"]) {
+	if (cookie.secure &&
+	    [URL.scheme caseInsensitiveCompare: @"https"] != OF_ORDERED_SAME) {
 		objc_autoreleasePoolPop(pool);
 		return;
 	}
 
 	cookieDomain = cookie.domain.lowercaseString;
@@ -123,11 +124,12 @@
 
 		expires = cookie.expires;
 		if (expires != nil && expires.timeIntervalSinceNow <= 0)
 			continue;
 
-		if (cookie.secure && ![URL.scheme isEqual: @"https"])
+		if (cookie.secure && [URL.scheme caseInsensitiveCompare:
+		    @"https"] != OF_ORDERED_SAME)
 			continue;
 
 		pool = objc_autoreleasePoolPush();
 
 		cookieDomain = cookie.domain.lowercaseString;

Index: src/OFHTTPServer.m
==================================================================
--- src/OFHTTPServer.m
+++ src/OFHTTPServer.m
@@ -253,12 +253,11 @@
 	@try {
 		if (!_headersSent)
 			[self of_sendHeaders];
 
 		if (_chunked)
-			[_socket writeBuffer: "0\r\n\r\n"
-				      length: 5];
+			[_socket writeString: @"0\r\n\r\n"];
 	} @catch (OFWriteFailedException *e) {
 		id <OFHTTPServerDelegate> delegate = _server.delegate;
 
 		if ([delegate respondsToSelector: @selector(server:
 		  didReceiveExceptionForResponse:request:exception:)])