mirror of
https://github.com/swisspol/GCDWebServer.git
synced 2024-10-07 16:48:03 +08:00
503 lines
18 KiB
Objective-C
503 lines
18 KiB
Objective-C
/*
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Copyright (c) 2012-2013, Pierre-Olivier Latour
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* The name of Pierre-Olivier Latour may not be used to endorse
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or promote products derived from this software without specific
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prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL PIERRE-OLIVIER LATOUR BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "GCDWebServerPrivate.h"
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#define kHeadersReadBuffer 1024
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#define kBodyWriteBufferSize (32 * 1024)
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typedef void (^ReadBufferCompletionBlock)(dispatch_data_t buffer);
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typedef void (^ReadDataCompletionBlock)(NSData* data);
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typedef void (^ReadHeadersCompletionBlock)(NSData* extraData);
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typedef void (^ReadBodyCompletionBlock)(BOOL success);
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typedef void (^WriteBufferCompletionBlock)(BOOL success);
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typedef void (^WriteDataCompletionBlock)(BOOL success);
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typedef void (^WriteHeadersCompletionBlock)(BOOL success);
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typedef void (^WriteBodyCompletionBlock)(BOOL success);
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static NSData* _separatorData = nil;
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static NSData* _continueData = nil;
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static NSDateFormatter* _dateFormatter = nil;
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static dispatch_queue_t _formatterQueue = NULL;
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@implementation GCDWebServerConnection (Read)
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- (void)_readBufferWithLength:(NSUInteger)length completionBlock:(ReadBufferCompletionBlock)block {
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dispatch_read(_socket, length, kGCDWebServerGCDQueue, ^(dispatch_data_t buffer, int error) {
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@autoreleasepool {
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if (error == 0) {
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size_t size = dispatch_data_get_size(buffer);
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if (size > 0) {
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LOG_DEBUG(@"Connection received %i bytes on socket %i", size, _socket);
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_bytesRead += size;
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block(buffer);
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} else {
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if (_bytesRead > 0) {
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LOG_ERROR(@"No more data available on socket %i", _socket);
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} else {
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LOG_WARNING(@"No data received from socket %i", _socket);
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}
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block(NULL);
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}
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} else {
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LOG_ERROR(@"Error while reading from socket %i: %s (%i)", _socket, strerror(error), error);
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block(NULL);
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}
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}
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});
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}
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- (void)_readDataWithCompletionBlock:(ReadDataCompletionBlock)block {
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[self _readBufferWithLength:SIZE_T_MAX completionBlock:^(dispatch_data_t buffer) {
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if (buffer) {
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NSMutableData* data = [[NSMutableData alloc] initWithCapacity:dispatch_data_get_size(buffer)];
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dispatch_data_apply(buffer, ^bool(dispatch_data_t region, size_t offset, const void* buffer, size_t size) {
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[data appendBytes:buffer length:size];
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return true;
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});
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block(data);
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ARC_RELEASE(data);
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} else {
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block(nil);
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}
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}];
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}
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- (void)_readHeadersWithCompletionBlock:(ReadHeadersCompletionBlock)block {
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DCHECK(_requestMessage);
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[self _readBufferWithLength:SIZE_T_MAX completionBlock:^(dispatch_data_t buffer) {
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if (buffer) {
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NSMutableData* data = [NSMutableData dataWithCapacity:kHeadersReadBuffer];
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dispatch_data_apply(buffer, ^bool(dispatch_data_t region, size_t offset, const void* buffer, size_t size) {
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[data appendBytes:buffer length:size];
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return true;
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});
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NSRange range = [data rangeOfData:_separatorData options:0 range:NSMakeRange(0, data.length)];
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if (range.location == NSNotFound) {
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if (CFHTTPMessageAppendBytes(_requestMessage, data.bytes, data.length)) {
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[self _readHeadersWithCompletionBlock:block];
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} else {
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LOG_ERROR(@"Failed appending request headers data from socket %i", _socket);
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block(nil);
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}
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} else {
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NSUInteger length = range.location + range.length;
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if (CFHTTPMessageAppendBytes(_requestMessage, data.bytes, length)) {
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if (CFHTTPMessageIsHeaderComplete(_requestMessage)) {
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block([data subdataWithRange:NSMakeRange(length, data.length - length)]);
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} else {
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LOG_ERROR(@"Failed parsing request headers from socket %i", _socket);
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block(nil);
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}
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} else {
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LOG_ERROR(@"Failed appending request headers data from socket %i", _socket);
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block(nil);
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}
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}
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} else {
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block(nil);
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}
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}];
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}
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- (void)_readBodyWithRemainingLength:(NSUInteger)length completionBlock:(ReadBodyCompletionBlock)block {
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DCHECK([_request hasBody]);
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[self _readBufferWithLength:length completionBlock:^(dispatch_data_t buffer) {
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if (buffer) {
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NSInteger remainingLength = length - dispatch_data_get_size(buffer);
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if (remainingLength >= 0) {
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bool success = dispatch_data_apply(buffer, ^bool(dispatch_data_t region, size_t offset, const void* buffer, size_t size) {
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NSInteger result = [_request write:buffer maxLength:size];
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if (result != size) {
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LOG_ERROR(@"Failed writing request body on socket %i (error %i)", _socket, (int)result);
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return false;
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}
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return true;
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});
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if (success) {
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if (remainingLength > 0) {
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[self _readBodyWithRemainingLength:remainingLength completionBlock:block];
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} else {
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block(YES);
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}
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} else {
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block(NO);
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}
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} else {
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DNOT_REACHED();
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block(NO);
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}
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} else {
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block(NO);
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}
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}];
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}
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@end
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@implementation GCDWebServerConnection (Write)
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- (void)_writeBuffer:(dispatch_data_t)buffer withCompletionBlock:(WriteBufferCompletionBlock)block {
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size_t size = dispatch_data_get_size(buffer);
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dispatch_write(_socket, buffer, kGCDWebServerGCDQueue, ^(dispatch_data_t data, int error) {
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@autoreleasepool {
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if (error == 0) {
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DCHECK(data == NULL);
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LOG_DEBUG(@"Connection sent %i bytes on socket %i", size, _socket);
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_bytesWritten += size;
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block(YES);
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} else {
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LOG_ERROR(@"Error while writing to socket %i: %s (%i)", _socket, strerror(error), error);
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block(NO);
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}
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}
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});
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}
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- (void)_writeData:(NSData*)data withCompletionBlock:(WriteDataCompletionBlock)block {
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#if !__has_feature(objc_arc)
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[data retain];
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#endif
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dispatch_data_t buffer = dispatch_data_create(data.bytes, data.length, dispatch_get_main_queue(), ^{
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#if __has_feature(objc_arc)
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[data self]; // Keeps ARC from releasing data too early
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#else
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[data release];
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#endif
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});
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[self _writeBuffer:buffer withCompletionBlock:block];
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dispatch_release(buffer);
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}
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- (void)_writeHeadersWithCompletionBlock:(WriteHeadersCompletionBlock)block {
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DCHECK(_responseMessage);
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CFDataRef message = CFHTTPMessageCopySerializedMessage(_responseMessage);
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[self _writeData:(ARC_BRIDGE NSData*)message withCompletionBlock:block];
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CFRelease(message);
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}
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- (void)_writeBodyWithCompletionBlock:(WriteBodyCompletionBlock)block {
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DCHECK([_response hasBody]);
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void* buffer = malloc(kBodyWriteBufferSize);
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NSInteger result = [_response read:buffer maxLength:kBodyWriteBufferSize];
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if (result > 0) {
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dispatch_data_t wrapper = dispatch_data_create(buffer, result, NULL, DISPATCH_DATA_DESTRUCTOR_FREE);
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[self _writeBuffer:wrapper withCompletionBlock:^(BOOL success) {
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if (success) {
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[self _writeBodyWithCompletionBlock:block];
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} else {
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block(NO);
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}
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}];
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dispatch_release(wrapper);
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} else if (result < 0) {
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LOG_ERROR(@"Failed reading response body on socket %i (error %i)", _socket, (int)result);
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block(NO);
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free(buffer);
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} else {
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block(YES);
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free(buffer);
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}
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}
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@end
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@implementation GCDWebServerConnection
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@synthesize server=_server, address=_address, totalBytesRead=_bytesRead, totalBytesWritten=_bytesWritten;
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+ (void)initialize {
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DCHECK([NSThread isMainThread]); // NSDateFormatter should be initialized on main thread
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if (_separatorData == nil) {
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_separatorData = [[NSData alloc] initWithBytes:"\r\n\r\n" length:4];
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DCHECK(_separatorData);
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}
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if (_continueData == nil) {
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CFHTTPMessageRef message = CFHTTPMessageCreateResponse(kCFAllocatorDefault, 100, NULL, kCFHTTPVersion1_1);
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#if __has_feature(objc_arc)
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_continueData = CFBridgingRelease(CFHTTPMessageCopySerializedMessage(message));
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#else
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_continueData = (NSData*)CFHTTPMessageCopySerializedMessage(message);
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#endif
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CFRelease(message);
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DCHECK(_continueData);
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}
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if (_dateFormatter == nil) {
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_dateFormatter = [[NSDateFormatter alloc] init];
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_dateFormatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
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_dateFormatter.dateFormat = @"EEE',' dd MMM yyyy HH':'mm':'ss 'GMT'";
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_dateFormatter.locale = ARC_AUTORELEASE([[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]);
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DCHECK(_dateFormatter);
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}
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if (_formatterQueue == NULL) {
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_formatterQueue = dispatch_queue_create(NULL, DISPATCH_QUEUE_SERIAL);
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DCHECK(_formatterQueue);
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}
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}
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- (void)_initializeResponseHeadersWithStatusCode:(NSInteger)statusCode {
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_responseMessage = CFHTTPMessageCreateResponse(kCFAllocatorDefault, statusCode, NULL, kCFHTTPVersion1_1);
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Connection"), CFSTR("Close"));
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Server"), (ARC_BRIDGE CFStringRef)[[_server class] serverName]);
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dispatch_sync(_formatterQueue, ^{
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NSString* date = [_dateFormatter stringFromDate:[NSDate date]];
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Date"), (ARC_BRIDGE CFStringRef)date);
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});
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}
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- (void)_abortWithStatusCode:(NSUInteger)statusCode {
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DCHECK(_responseMessage == NULL);
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DCHECK((statusCode >= 400) && (statusCode < 600));
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[self _initializeResponseHeadersWithStatusCode:statusCode];
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[self _writeHeadersWithCompletionBlock:^(BOOL success) {
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; // Nothing more to do
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}];
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LOG_DEBUG(@"Connection aborted with status code %i on socket %i", statusCode, _socket);
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}
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// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
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- (void)_processRequest {
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DCHECK(_responseMessage == NULL);
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GCDWebServerResponse* response = [self processRequest:_request withBlock:_handler.processBlock];
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if (![response hasBody] || [response open]) {
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_response = ARC_RETAIN(response);
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}
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if (_response) {
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[self _initializeResponseHeadersWithStatusCode:_response.statusCode];
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NSUInteger maxAge = _response.cacheControlMaxAge;
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if (maxAge > 0) {
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Cache-Control"), (ARC_BRIDGE CFStringRef)[NSString stringWithFormat:@"max-age=%i, public", (int)maxAge]);
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} else {
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Cache-Control"), CFSTR("no-cache"));
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}
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[_response.additionalHeaders enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL* stop) {
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, (ARC_BRIDGE CFStringRef)key, (ARC_BRIDGE CFStringRef)obj);
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}];
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if ([_response hasBody]) {
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Content-Type"), (ARC_BRIDGE CFStringRef)_response.contentType);
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CFHTTPMessageSetHeaderFieldValue(_responseMessage, CFSTR("Content-Length"), (ARC_BRIDGE CFStringRef)[NSString stringWithFormat:@"%i", (int)_response.contentLength]);
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}
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[self _writeHeadersWithCompletionBlock:^(BOOL success) {
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if (success) {
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if ([_response hasBody]) {
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[self _writeBodyWithCompletionBlock:^(BOOL success) {
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[_response close]; // Can't do anything with result anyway
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}];
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}
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} else if ([_response hasBody]) {
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[_response close]; // Can't do anything with result anyway
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}
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}];
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} else {
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[self _abortWithStatusCode:500];
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}
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}
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- (void)_readRequestBody:(NSData*)initialData {
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if ([_request open]) {
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NSInteger length = _request.contentLength;
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if (initialData.length) {
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NSInteger result = [_request write:initialData.bytes maxLength:initialData.length];
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if (result == initialData.length) {
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length -= initialData.length;
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DCHECK(length >= 0);
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} else {
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LOG_ERROR(@"Failed writing request body on socket %i (error %i)", _socket, (int)result);
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length = -1;
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}
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}
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if (length > 0) {
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[self _readBodyWithRemainingLength:length completionBlock:^(BOOL success) {
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if (![_request close]) {
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success = NO;
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}
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if (success) {
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[self _processRequest];
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} else {
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[self _abortWithStatusCode:500];
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}
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}];
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} else if (length == 0) {
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if ([_request close]) {
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[self _processRequest];
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} else {
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[self _abortWithStatusCode:500];
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}
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} else {
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[_request close]; // Can't do anything with result anyway
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[self _abortWithStatusCode:500];
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}
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} else {
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[self _abortWithStatusCode:500];
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}
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}
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- (void)_readRequestHeaders {
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_requestMessage = CFHTTPMessageCreateEmpty(kCFAllocatorDefault, true);
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[self _readHeadersWithCompletionBlock:^(NSData* extraData) {
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if (extraData) {
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NSString* requestMethod = [ARC_BRIDGE_RELEASE(CFHTTPMessageCopyRequestMethod(_requestMessage)) uppercaseString];
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DCHECK(requestMethod);
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NSURL* requestURL = ARC_BRIDGE_RELEASE(CFHTTPMessageCopyRequestURL(_requestMessage));
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DCHECK(requestURL);
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NSString* requestPath = GCDWebServerUnescapeURLString(ARC_BRIDGE_RELEASE(CFURLCopyPath((CFURLRef)requestURL))); // Don't use -[NSURL path] which strips the ending slash
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DCHECK(requestPath);
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NSDictionary* requestQuery = nil;
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NSString* queryString = ARC_BRIDGE_RELEASE(CFURLCopyQueryString((CFURLRef)requestURL, NULL)); // Don't use -[NSURL query] to make sure query is not unescaped;
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if (queryString.length) {
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requestQuery = GCDWebServerParseURLEncodedForm(queryString);
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DCHECK(requestQuery);
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}
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NSDictionary* requestHeaders = ARC_BRIDGE_RELEASE(CFHTTPMessageCopyAllHeaderFields(_requestMessage));
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DCHECK(requestHeaders);
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for (_handler in _server.handlers) {
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_request = ARC_RETAIN(_handler.matchBlock(requestMethod, requestURL, requestHeaders, requestPath, requestQuery));
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if (_request) {
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break;
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}
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}
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if (_request) {
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if (_request.hasBody) {
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if (extraData.length <= _request.contentLength) {
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NSString* expectHeader = ARC_BRIDGE_RELEASE(CFHTTPMessageCopyHeaderFieldValue(_requestMessage, CFSTR("Expect")));
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if (expectHeader) {
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if ([expectHeader caseInsensitiveCompare:@"100-continue"] == NSOrderedSame) {
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[self _writeData:_continueData withCompletionBlock:^(BOOL success) {
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if (success) {
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[self _readRequestBody:extraData];
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}
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}];
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} else {
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LOG_ERROR(@"Unsupported 'Expect' / 'Content-Length' header combination on socket %i", _socket);
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[self _abortWithStatusCode:417];
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}
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} else {
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[self _readRequestBody:extraData];
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}
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} else {
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LOG_ERROR(@"Unexpected 'Content-Length' header value on socket %i", _socket);
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[self _abortWithStatusCode:400];
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}
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} else {
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[self _processRequest];
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}
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} else {
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[self _abortWithStatusCode:405];
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}
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} else {
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[self _abortWithStatusCode:500];
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}
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}];
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}
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- (id)initWithServer:(GCDWebServer*)server address:(NSData*)address socket:(CFSocketNativeHandle)socket {
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if ((self = [super init])) {
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_server = ARC_RETAIN(server);
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_address = ARC_RETAIN(address);
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_socket = socket;
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[self open];
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}
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return self;
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}
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- (void)dealloc {
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[self close];
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ARC_RELEASE(_server);
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ARC_RELEASE(_address);
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if (_requestMessage) {
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CFRelease(_requestMessage);
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}
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ARC_RELEASE(_request);
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if (_responseMessage) {
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CFRelease(_responseMessage);
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}
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ARC_RELEASE(_response);
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ARC_DEALLOC(super);
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}
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@end
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@implementation GCDWebServerConnection (Subclassing)
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- (void)open {
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LOG_DEBUG(@"Did open connection on socket %i", _socket);
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[self _readRequestHeaders];
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}
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- (GCDWebServerResponse*)processRequest:(GCDWebServerRequest*)request withBlock:(GCDWebServerProcessBlock)block {
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LOG_DEBUG(@"Connection on socket %i processing %@ request for \"%@\" (%i bytes body)", _socket, _request.method, _request.path, _request.contentLength);
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GCDWebServerResponse* response = nil;
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@try {
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response = block(request);
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}
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@catch (NSException* exception) {
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LOG_EXCEPTION(exception);
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}
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return response;
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}
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- (void)close {
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int result = close(_socket);
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if (result != 0) {
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LOG_ERROR(@"Failed closing socket %i for connection (%i): %s", _socket, errno, strerror(errno));
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}
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LOG_DEBUG(@"Did close connection on socket %i", _socket);
|
|
}
|
|
|
|
@end
|