CGDWebServer/GCDWebServer.m - external/github.com/swisspol/GCDWebServer - Git at Google

 /*
  Copyright (c) 2012-2013, Pierre-Olivier Latour
  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  * Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.
  * The name of Pierre-Olivier Latour may not be used to endorse
  or promote products derived from this software without specific
  prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL PIERRE-OLIVIER LATOUR BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #import <TargetConditionals.h>
 #if TARGET_OS_IPHONE
 #import <MobileCoreServices/MobileCoreServices.h>
 #endif

 #import <netinet/in.h>

 #import "GCDWebServerPrivate.h"

 #define kMaxPendingConnections 16

 static BOOL _run;

 NSString* GCDWebServerGetMimeTypeForExtension(NSString* extension) {
   static NSDictionary* _overrides = nil;
   if (_overrides == nil) {
     _overrides = [[NSDictionary alloc] initWithObjectsAndKeys:
                   @"text/css", @"css",
                   nil];
   }
   NSString* mimeType = nil;
   extension = [extension lowercaseString];
   if (extension.length) {
     mimeType = [_overrides objectForKey:extension];
     if (mimeType == nil) {
       CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (CFStringRef)extension, NULL);
       if (uti) {
         mimeType = [(id)UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType) autorelease];
         CFRelease(uti);
       }
     }
   }
   return mimeType;
 }

 NSString* GCDWebServerUnescapeURLString(NSString* string) {
   return [(id)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (CFStringRef)string, CFSTR(""),
                                                                       kCFStringEncodingUTF8) autorelease];
 }

 NSDictionary* GCDWebServerParseURLEncodedForm(NSString* form) {
   NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
   NSScanner* scanner = [[NSScanner alloc] initWithString:form];
   [scanner setCharactersToBeSkipped:nil];
   while (1) {
     NSString* key = nil;
     if (![scanner scanUpToString:@"=" intoString:&key] || [scanner isAtEnd]) {
       break;
     }
     [scanner setScanLocation:([scanner scanLocation] + 1)];

     NSString* value = nil;
     if (![scanner scanUpToString:@"&" intoString:&value]) {
       break;
     }

     key = [key stringByReplacingOccurrencesOfString:@"+" withString:@" "];
     value = [value stringByReplacingOccurrencesOfString:@"+" withString:@" "];
     [parameters setObject:GCDWebServerUnescapeURLString(value) forKey:GCDWebServerUnescapeURLString(key)];

     if ([scanner isAtEnd]) {
       break;
     }
     [scanner setScanLocation:([scanner scanLocation] + 1)];
   }
   [scanner release];
   return parameters;
 }

 static void _SignalHandler(int signal) {
   _run = NO;
   printf("\n");
 }

 @implementation GCDWebServerHandler

 @synthesize matchBlock=_matchBlock, processBlock=_processBlock;

 - (id)initWithMatchBlock:(GCDWebServerMatchBlock)matchBlock processBlock:(GCDWebServerProcessBlock)processBlock {
   if ((self = [super init])) {
     _matchBlock = Block_copy(matchBlock);
     _processBlock = Block_copy(processBlock);
   }
   return self;
 }

 - (void)dealloc {
   Block_release(_matchBlock);
   Block_release(_processBlock);

   [super dealloc];
 }

 @end

 @implementation GCDWebServer

 @synthesize handlers=_handlers, port=_port;

 + (void)initialize {
   [GCDWebServerConnection class];  // Initialize class immediately to make sure it happens on the main thread
 }

 - (id)init {
   if ((self = [super init])) {
     _handlers = [[NSMutableArray alloc] init];
   }
   return self;
 }

 - (void)dealloc {
   if (_source) {
     [self stop];
   }

   [_handlers release];

   [super dealloc];
 }

 - (void)addHandlerWithMatchBlock:(GCDWebServerMatchBlock)matchBlock processBlock:(GCDWebServerProcessBlock)handlerBlock {
   DCHECK(_source == NULL);
   GCDWebServerHandler* handler = [[GCDWebServerHandler alloc] initWithMatchBlock:matchBlock processBlock:handlerBlock];
   [_handlers insertObject:handler atIndex:0];
   [handler release];
 }

 - (void)removeAllHandlers {
   DCHECK(_source == NULL);
   [_handlers removeAllObjects];
 }

 - (BOOL)start {
   return [self startWithPort:8080 bonjourName:@""];
 }

 static void _NetServiceClientCallBack(CFNetServiceRef service, CFStreamError* error, void* info) {
   @autoreleasepool {
     if (error->error) {
       LOG_ERROR(@"Bonjour error %i (domain %i)", error->error, (int)error->domain);
     } else {
       LOG_VERBOSE(@"Registered Bonjour service \"%@\" with type '%@' on port %i", CFNetServiceGetName(service), CFNetServiceGetType(service), CFNetServiceGetPortNumber(service));
     }
   }
 }

 - (BOOL)startWithPort:(NSUInteger)port bonjourName:(NSString*)name {
   DCHECK(_source == NULL);
   int listeningSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
   if (listeningSocket > 0) {
     int yes = 1;
     setsockopt(listeningSocket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
     setsockopt(listeningSocket, SOL_SOCKET, SO_REUSEPORT, &yes, sizeof(yes));

     struct sockaddr_in addr4;
     bzero(&addr4, sizeof(addr4));
     addr4.sin_len = sizeof(addr4);
     addr4.sin_family = AF_INET;
     addr4.sin_port = htons(port);
     addr4.sin_addr.s_addr = htonl(INADDR_ANY);
     if (bind(listeningSocket, (void*)&addr4, sizeof(addr4)) == 0) {
       if (listen(listeningSocket, kMaxPendingConnections) == 0) {
         _source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, listeningSocket, 0, kGCDWebServerGCDQueue);
         dispatch_source_set_cancel_handler(_source, ^{

           @autoreleasepool {
             int result = close(listeningSocket);
             if (result != 0) {
               LOG_ERROR(@"Failed closing socket (%i): %s", errno, strerror(errno));
             } else {
               LOG_DEBUG(@"Closed listening socket");
             }
           }

         });
         dispatch_source_set_event_handler(_source, ^{

           @autoreleasepool {
             struct sockaddr addr;
             socklen_t addrlen = sizeof(addr);
             int socket = accept(listeningSocket, &addr, &addrlen);
             if (socket > 0) {
               int yes = 1;
               setsockopt(socket, SOL_SOCKET, SO_NOSIGPIPE, &yes, sizeof(yes));  // Make sure this socket cannot generate SIG_PIPE

               NSData* data = [NSData dataWithBytes:&addr length:addrlen];
               Class connectionClass = [[self class] connectionClass];
               GCDWebServerConnection* connection = [[connectionClass alloc] initWithServer:self address:data socket:socket];
               [connection release];  // Connection will automatically retain itself while opened
             } else {
               LOG_ERROR(@"Failed accepting socket (%i): %s", errno, strerror(errno));
             }
           }

         });

         if (port == 0) {  // Determine the actual port we are listening on
           struct sockaddr addr;
           socklen_t addrlen = sizeof(addr);
           if (getsockname(listeningSocket, &addr, &addrlen) == 0) {
             struct sockaddr_in* sockaddr = (struct sockaddr_in*)&addr;
             _port = ntohs(sockaddr->sin_port);
           } else {
             LOG_ERROR(@"Failed retrieving socket address (%i): %s", errno, strerror(errno));
           }
         } else {
           _port = port;
         }

         if (name) {
           _service = CFNetServiceCreate(kCFAllocatorDefault, CFSTR("local."), CFSTR("_http._tcp"), (CFStringRef)name, _port);
           if (_service) {
             CFNetServiceClientContext context = {0, self, NULL, NULL, NULL};
             CFNetServiceSetClient(_service, _NetServiceClientCallBack, &context);
             CFNetServiceScheduleWithRunLoop(_service, CFRunLoopGetMain(), kCFRunLoopCommonModes);
             CFStreamError error = {0};
             CFNetServiceRegisterWithOptions(_service, 0, &error);
           } else {
             LOG_ERROR(@"Failed creating CFNetService");
           }
         }

         dispatch_resume(_source);
         LOG_VERBOSE(@"%@ started on port %i", [self class], (int)_port);
       } else {
         LOG_ERROR(@"Failed listening on socket (%i): %s", errno, strerror(errno));
         close(listeningSocket);
       }
     } else {
       LOG_ERROR(@"Failed binding socket (%i): %s", errno, strerror(errno));
       close(listeningSocket);
     }
   } else {
     LOG_ERROR(@"Failed creating socket (%i): %s", errno, strerror(errno));
   }
   return (_source ? YES : NO);
 }

 - (BOOL)isRunning {
   return (_source ? YES : NO);
 }

 - (void)stop {
   DCHECK(_source != NULL);
   if (_source) {
     if (_service) {
       CFNetServiceUnscheduleFromRunLoop(_service, CFRunLoopGetMain(), kCFRunLoopCommonModes);
       CFNetServiceSetClient(_service, NULL, NULL);
       CFRelease(_service);
       _service = NULL;
     }

     dispatch_source_cancel(_source);  // This will close the socket
     dispatch_release(_source);
     _source = NULL;

     LOG_VERBOSE(@"%@ stopped", [self class]);
   }
   _port = 0;
 }

 @end

 @implementation GCDWebServer (Subclassing)

 + (Class)connectionClass {
   return [GCDWebServerConnection class];
 }

 + (NSString*)serverName {
   return NSStringFromClass(self);
 }

 @end

 @implementation GCDWebServer (Extensions)

 - (BOOL)runWithPort:(NSUInteger)port {
   BOOL success = NO;
   _run = YES;
   void* handler = signal(SIGINT, _SignalHandler);
   if (handler != SIG_ERR) {
     if ([self startWithPort:port bonjourName:@""]) {
       while (_run) {
         CFRunLoopRunInMode(kCFRunLoopDefaultMode, 1.0, true);
       }
       [self stop];
       success = YES;
     }
     signal(SIGINT, handler);
   }
   return success;
 }

 @end

 @implementation GCDWebServer (Handlers)

 - (void)addDefaultHandlerForMethod:(NSString*)method requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
   [self addHandlerWithMatchBlock:^GCDWebServerRequest *(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

     return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

   } processBlock:block];
 }

 - (GCDWebServerResponse*)_responseWithContentsOfFile:(NSString*)path {
   return [GCDWebServerFileResponse responseWithFile:path];
 }

 - (GCDWebServerResponse*)_responseWithContentsOfDirectory:(NSString*)path {
   NSDirectoryEnumerator* enumerator = [[NSFileManager defaultManager] enumeratorAtPath:path];
   if (enumerator == nil) {
     return nil;
   }
   NSMutableString* html = [NSMutableString string];
   [html appendString:@"<html><body>\n"];
   [html appendString:@"<ul>\n"];
   for (NSString* file in enumerator) {
     if (![file hasPrefix:@"."]) {
       NSString* type = [[enumerator fileAttributes] objectForKey:NSFileType];
       NSString* escapedFile = [file stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
       DCHECK(escapedFile);
       if ([type isEqualToString:NSFileTypeRegular]) {
         [html appendFormat:@"<li><a href=\"%@\">%@</a></li>\n", escapedFile, file];
       } else if ([type isEqualToString:NSFileTypeDirectory]) {
         [html appendFormat:@"<li><a href=\"%@/\">%@/</a></li>\n", escapedFile, file];
       }
     }
     [enumerator skipDescendents];
   }
   [html appendString:@"</ul>\n"];
   [html appendString:@"</body></html>\n"];
   return [GCDWebServerDataResponse responseWithHTML:html];
 }

 - (void)addHandlerForBasePath:(NSString*)basePath localPath:(NSString*)localPath indexFilename:(NSString*)indexFilename cacheAge:(NSUInteger)cacheAge {
   if ([basePath hasPrefix:@"/"] && [basePath hasSuffix:@"/"]) {
     [self addHandlerWithMatchBlock:^GCDWebServerRequest *(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

       if (![requestMethod isEqualToString:@"GET"]) {
         return nil;
       }
       if (![urlPath hasPrefix:basePath]) {
         return nil;
       }
       return [[[GCDWebServerRequest alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

     } processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) {

       GCDWebServerResponse* response = nil;
       NSString* filePath = [localPath stringByAppendingPathComponent:[request.path substringFromIndex:basePath.length]];
       BOOL isDirectory;
       if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDirectory]) {
         if (isDirectory) {
           if (indexFilename) {
             NSString* indexPath = [filePath stringByAppendingPathComponent:indexFilename];
             if ([[NSFileManager defaultManager] fileExistsAtPath:indexPath isDirectory:&isDirectory] && !isDirectory) {
               return [self _responseWithContentsOfFile:indexPath];
             }
           }
           response = [self _responseWithContentsOfDirectory:filePath];
         } else {
           response = [self _responseWithContentsOfFile:filePath];
         }
       }
       if (response) {
         response.cacheControlMaxAge = cacheAge;
       } else {
         response = [GCDWebServerResponse responseWithStatusCode:404];
       }
       return response;

     }];
   } else {
     DNOT_REACHED();
   }
 }

 - (void)addHandlerForMethod:(NSString*)method path:(NSString*)path requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
   if ([path hasPrefix:@"/"] && [class isSubclassOfClass:[GCDWebServerRequest class]]) {
     [self addHandlerWithMatchBlock:^GCDWebServerRequest *(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

       if (![requestMethod isEqualToString:method]) {
         return nil;
       }
       if ([urlPath caseInsensitiveCompare:path] != NSOrderedSame) {
         return nil;
       }
       return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

     } processBlock:block];
   } else {
     DNOT_REACHED();
   }
 }

 - (void)addHandlerForMethod:(NSString*)method pathRegex:(NSString*)regex requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
   NSRegularExpression* expression = [NSRegularExpression regularExpressionWithPattern:regex options:NSRegularExpressionCaseInsensitive error:NULL];
   if (expression && [class isSubclassOfClass:[GCDWebServerRequest class]]) {
     [self addHandlerWithMatchBlock:^GCDWebServerRequest *(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

       if (![requestMethod isEqualToString:method]) {
         return nil;
       }
       if ([expression firstMatchInString:urlPath options:0 range:NSMakeRange(0, urlPath.length)] == nil) {
         return nil;
       }
       return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

     } processBlock:block];
   } else {
     DNOT_REACHED();
   }
 }

 @end
	/*
	Copyright (c) 2012-2013, Pierre-Olivier Latour
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:
	* Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.
	* Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.
	* The name of Pierre-Olivier Latour may not be used to endorse
	or promote products derived from this software without specific
	prior written permission.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	DISCLAIMED. IN NO EVENT SHALL PIERRE-OLIVIER LATOUR BE LIABLE FOR ANY
	DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#import <TargetConditionals.h>
	#if TARGET_OS_IPHONE
	#import <MobileCoreServices/MobileCoreServices.h>
	#endif

	#import <netinet/in.h>

	#import "GCDWebServerPrivate.h"

	#define kMaxPendingConnections 16

	static BOOL _run;

	NSString* GCDWebServerGetMimeTypeForExtension(NSString* extension) {
	static NSDictionary* _overrides = nil;
	if (_overrides == nil) {
	_overrides = [[NSDictionary alloc] initWithObjectsAndKeys:
	@"text/css", @"css",
	nil];
	}
	NSString* mimeType = nil;
	extension = [extension lowercaseString];
	if (extension.length) {
	mimeType = [_overrides objectForKey:extension];
	if (mimeType == nil) {
	CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (CFStringRef)extension, NULL);
	if (uti) {
	mimeType = [(id)UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType) autorelease];
	CFRelease(uti);
	}
	}
	}
	return mimeType;
	}

	NSString* GCDWebServerUnescapeURLString(NSString* string) {
	return [(id)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (CFStringRef)string, CFSTR(""),
	kCFStringEncodingUTF8) autorelease];
	}

	NSDictionary* GCDWebServerParseURLEncodedForm(NSString* form) {
	NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
	NSScanner* scanner = [[NSScanner alloc] initWithString:form];
	[scanner setCharactersToBeSkipped:nil];
	while (1) {
	NSString* key = nil;
	if (![scanner scanUpToString:@"=" intoString:&key] \|\| [scanner isAtEnd]) {
	break;
	}
	[scanner setScanLocation:([scanner scanLocation] + 1)];

	NSString* value = nil;
	if (![scanner scanUpToString:@"&" intoString:&value]) {
	break;
	}

	key = [key stringByReplacingOccurrencesOfString:@"+" withString:@" "];
	value = [value stringByReplacingOccurrencesOfString:@"+" withString:@" "];
	[parameters setObject:GCDWebServerUnescapeURLString(value) forKey:GCDWebServerUnescapeURLString(key)];

	if ([scanner isAtEnd]) {
	break;
	}
	[scanner setScanLocation:([scanner scanLocation] + 1)];
	}
	[scanner release];
	return parameters;
	}

	static void _SignalHandler(int signal) {
	_run = NO;
	printf("\n");
	}

	@implementation GCDWebServerHandler

	@synthesize matchBlock=_matchBlock, processBlock=_processBlock;

	- (id)initWithMatchBlock:(GCDWebServerMatchBlock)matchBlock processBlock:(GCDWebServerProcessBlock)processBlock {
	if ((self = [super init])) {
	_matchBlock = Block_copy(matchBlock);
	_processBlock = Block_copy(processBlock);
	}
	return self;
	}

	- (void)dealloc {
	Block_release(_matchBlock);
	Block_release(_processBlock);

	[super dealloc];
	}

	@end

	@implementation GCDWebServer

	@synthesize handlers=_handlers, port=_port;

	+ (void)initialize {
	[GCDWebServerConnection class]; // Initialize class immediately to make sure it happens on the main thread
	}

	- (id)init {
	if ((self = [super init])) {
	_handlers = [[NSMutableArray alloc] init];
	}
	return self;
	}

	- (void)dealloc {
	if (_source) {
	[self stop];
	}

	[_handlers release];

	[super dealloc];
	}

	- (void)addHandlerWithMatchBlock:(GCDWebServerMatchBlock)matchBlock processBlock:(GCDWebServerProcessBlock)handlerBlock {
	DCHECK(_source == NULL);
	GCDWebServerHandler* handler = [[GCDWebServerHandler alloc] initWithMatchBlock:matchBlock processBlock:handlerBlock];
	[_handlers insertObject:handler atIndex:0];
	[handler release];
	}

	- (void)removeAllHandlers {
	DCHECK(_source == NULL);
	[_handlers removeAllObjects];
	}

	- (BOOL)start {
	return [self startWithPort:8080 bonjourName:@""];
	}

	static void _NetServiceClientCallBack(CFNetServiceRef service, CFStreamError* error, void* info) {
	@autoreleasepool {
	if (error->error) {
	LOG_ERROR(@"Bonjour error %i (domain %i)", error->error, (int)error->domain);
	} else {
	LOG_VERBOSE(@"Registered Bonjour service \"%@\" with type '%@' on port %i", CFNetServiceGetName(service), CFNetServiceGetType(service), CFNetServiceGetPortNumber(service));
	}
	}
	}

	- (BOOL)startWithPort:(NSUInteger)port bonjourName:(NSString*)name {
	DCHECK(_source == NULL);
	int listeningSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	if (listeningSocket > 0) {
	int yes = 1;
	setsockopt(listeningSocket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
	setsockopt(listeningSocket, SOL_SOCKET, SO_REUSEPORT, &yes, sizeof(yes));

	struct sockaddr_in addr4;
	bzero(&addr4, sizeof(addr4));
	addr4.sin_len = sizeof(addr4);
	addr4.sin_family = AF_INET;
	addr4.sin_port = htons(port);
	addr4.sin_addr.s_addr = htonl(INADDR_ANY);
	if (bind(listeningSocket, (void*)&addr4, sizeof(addr4)) == 0) {
	if (listen(listeningSocket, kMaxPendingConnections) == 0) {
	_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, listeningSocket, 0, kGCDWebServerGCDQueue);
	dispatch_source_set_cancel_handler(_source, ^{

	@autoreleasepool {
	int result = close(listeningSocket);
	if (result != 0) {
	LOG_ERROR(@"Failed closing socket (%i): %s", errno, strerror(errno));
	} else {
	LOG_DEBUG(@"Closed listening socket");
	}
	}

	});
	dispatch_source_set_event_handler(_source, ^{

	@autoreleasepool {
	struct sockaddr addr;
	socklen_t addrlen = sizeof(addr);
	int socket = accept(listeningSocket, &addr, &addrlen);
	if (socket > 0) {
	int yes = 1;
	setsockopt(socket, SOL_SOCKET, SO_NOSIGPIPE, &yes, sizeof(yes)); // Make sure this socket cannot generate SIG_PIPE

	NSData* data = [NSData dataWithBytes:&addr length:addrlen];
	Class connectionClass = [[self class] connectionClass];
	GCDWebServerConnection* connection = [[connectionClass alloc] initWithServer:self address:data socket:socket];
	[connection release]; // Connection will automatically retain itself while opened
	} else {
	LOG_ERROR(@"Failed accepting socket (%i): %s", errno, strerror(errno));
	}
	}

	});

	if (port == 0) { // Determine the actual port we are listening on
	struct sockaddr addr;
	socklen_t addrlen = sizeof(addr);
	if (getsockname(listeningSocket, &addr, &addrlen) == 0) {
	struct sockaddr_in* sockaddr = (struct sockaddr_in*)&addr;
	_port = ntohs(sockaddr->sin_port);
	} else {
	LOG_ERROR(@"Failed retrieving socket address (%i): %s", errno, strerror(errno));
	}
	} else {
	_port = port;
	}

	if (name) {
	_service = CFNetServiceCreate(kCFAllocatorDefault, CFSTR("local."), CFSTR("_http._tcp"), (CFStringRef)name, _port);
	if (_service) {
	CFNetServiceClientContext context = {0, self, NULL, NULL, NULL};
	CFNetServiceSetClient(_service, _NetServiceClientCallBack, &context);
	CFNetServiceScheduleWithRunLoop(_service, CFRunLoopGetMain(), kCFRunLoopCommonModes);
	CFStreamError error = {0};
	CFNetServiceRegisterWithOptions(_service, 0, &error);
	} else {
	LOG_ERROR(@"Failed creating CFNetService");
	}
	}

	dispatch_resume(_source);
	LOG_VERBOSE(@"%@ started on port %i", [self class], (int)_port);
	} else {
	LOG_ERROR(@"Failed listening on socket (%i): %s", errno, strerror(errno));
	close(listeningSocket);
	}
	} else {
	LOG_ERROR(@"Failed binding socket (%i): %s", errno, strerror(errno));
	close(listeningSocket);
	}
	} else {
	LOG_ERROR(@"Failed creating socket (%i): %s", errno, strerror(errno));
	}
	return (_source ? YES : NO);
	}

	- (BOOL)isRunning {
	return (_source ? YES : NO);
	}

	- (void)stop {
	DCHECK(_source != NULL);
	if (_source) {
	if (_service) {
	CFNetServiceUnscheduleFromRunLoop(_service, CFRunLoopGetMain(), kCFRunLoopCommonModes);
	CFNetServiceSetClient(_service, NULL, NULL);
	CFRelease(_service);
	_service = NULL;
	}

	dispatch_source_cancel(_source); // This will close the socket
	dispatch_release(_source);
	_source = NULL;

	LOG_VERBOSE(@"%@ stopped", [self class]);
	}
	_port = 0;
	}

	@end

	@implementation GCDWebServer (Subclassing)

	+ (Class)connectionClass {
	return [GCDWebServerConnection class];
	}

	+ (NSString*)serverName {
	return NSStringFromClass(self);
	}

	@end

	@implementation GCDWebServer (Extensions)

	- (BOOL)runWithPort:(NSUInteger)port {
	BOOL success = NO;
	_run = YES;
	void* handler = signal(SIGINT, _SignalHandler);
	if (handler != SIG_ERR) {
	if ([self startWithPort:port bonjourName:@""]) {
	while (_run) {
	CFRunLoopRunInMode(kCFRunLoopDefaultMode, 1.0, true);
	}
	[self stop];
	success = YES;
	}
	signal(SIGINT, handler);
	}
	return success;
	}

	@end

	@implementation GCDWebServer (Handlers)

	- (void)addDefaultHandlerForMethod:(NSString*)method requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
	[self addHandlerWithMatchBlock:^GCDWebServerRequest (NSString requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

	return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

	} processBlock:block];
	}

	- (GCDWebServerResponse)_responseWithContentsOfFile:(NSString)path {
	return [GCDWebServerFileResponse responseWithFile:path];
	}

	- (GCDWebServerResponse)_responseWithContentsOfDirectory:(NSString)path {
	NSDirectoryEnumerator* enumerator = [[NSFileManager defaultManager] enumeratorAtPath:path];
	if (enumerator == nil) {
	return nil;
	}
	NSMutableString* html = [NSMutableString string];
	[html appendString:@"<html><body>\n"];
	[html appendString:@"<ul>\n"];
	for (NSString* file in enumerator) {
	if (![file hasPrefix:@"."]) {
	NSString* type = [[enumerator fileAttributes] objectForKey:NSFileType];
	NSString* escapedFile = [file stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	DCHECK(escapedFile);
	if ([type isEqualToString:NSFileTypeRegular]) {
	[html appendFormat:@"<li><a href=\"%@\">%@</a></li>\n", escapedFile, file];
	} else if ([type isEqualToString:NSFileTypeDirectory]) {
	[html appendFormat:@"<li><a href=\"%@/\">%@/</a></li>\n", escapedFile, file];
	}
	}
	[enumerator skipDescendents];
	}
	[html appendString:@"</ul>\n"];
	[html appendString:@"</body></html>\n"];
	return [GCDWebServerDataResponse responseWithHTML:html];
	}

	- (void)addHandlerForBasePath:(NSString)basePath localPath:(NSString)localPath indexFilename:(NSString*)indexFilename cacheAge:(NSUInteger)cacheAge {
	if ([basePath hasPrefix:@"/"] && [basePath hasSuffix:@"/"]) {
	[self addHandlerWithMatchBlock:^GCDWebServerRequest (NSString requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

	if (![requestMethod isEqualToString:@"GET"]) {
	return nil;
	}
	if (![urlPath hasPrefix:basePath]) {
	return nil;
	}
	return [[[GCDWebServerRequest alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

	} processBlock:^GCDWebServerResponse (GCDWebServerRequest request) {

	GCDWebServerResponse* response = nil;
	NSString* filePath = [localPath stringByAppendingPathComponent:[request.path substringFromIndex:basePath.length]];
	BOOL isDirectory;
	if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDirectory]) {
	if (isDirectory) {
	if (indexFilename) {
	NSString* indexPath = [filePath stringByAppendingPathComponent:indexFilename];
	if ([[NSFileManager defaultManager] fileExistsAtPath:indexPath isDirectory:&isDirectory] && !isDirectory) {
	return [self _responseWithContentsOfFile:indexPath];
	}
	}
	response = [self _responseWithContentsOfDirectory:filePath];
	} else {
	response = [self _responseWithContentsOfFile:filePath];
	}
	}
	if (response) {
	response.cacheControlMaxAge = cacheAge;
	} else {
	response = [GCDWebServerResponse responseWithStatusCode:404];
	}
	return response;

	}];
	} else {
	DNOT_REACHED();
	}
	}

	- (void)addHandlerForMethod:(NSString)method path:(NSString)path requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
	if ([path hasPrefix:@"/"] && [class isSubclassOfClass:[GCDWebServerRequest class]]) {
	[self addHandlerWithMatchBlock:^GCDWebServerRequest (NSString requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

	if (![requestMethod isEqualToString:method]) {
	return nil;
	}
	if ([urlPath caseInsensitiveCompare:path] != NSOrderedSame) {
	return nil;
	}
	return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

	} processBlock:block];
	} else {
	DNOT_REACHED();
	}
	}

	- (void)addHandlerForMethod:(NSString)method pathRegex:(NSString)regex requestClass:(Class)class processBlock:(GCDWebServerProcessBlock)block {
	NSRegularExpression* expression = [NSRegularExpression regularExpressionWithPattern:regex options:NSRegularExpressionCaseInsensitive error:NULL];
	if (expression && [class isSubclassOfClass:[GCDWebServerRequest class]]) {
	[self addHandlerWithMatchBlock:^GCDWebServerRequest (NSString requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

	if (![requestMethod isEqualToString:method]) {
	return nil;
	}
	if ([expression firstMatchInString:urlPath options:0 range:NSMakeRange(0, urlPath.length)] == nil) {
	return nil;
	}
	return [[[class alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery] autorelease];

	} processBlock:block];
	} else {
	DNOT_REACHED();
	}
	}

	@end