解决 macOS 10.12 下 PAC 模式下Safari 或 Twitter 客户端 tweetbot客户端不能FQ的问题

解决 macOS 10.12 下 PAC 模式下Safari 或 Twitter 客户端 tweetbot客户端不能FQ的问题
https://github.com/qiuyuzhou/ShadowsocksX-NG/issues/30
PS 手头没有 macOS 10.12 的机器，麻烦有的请帮忙测试一下
或者可以从 https://github.com/qinyuhang/ShadowsocksX-NG/tree/webserver 下载去
Xcode build 一下

Pods/GCDWebServer/GCDWebServer/Requests/GCDWebServerDataRequest.m

@@ -0,0 +1,108 @@
+/*
+ Copyright (c) 2012-2015, 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.
+ */
+
+#if !__has_feature(objc_arc)
+#error GCDWebServer requires ARC
+#endif
+
+#import "GCDWebServerPrivate.h"
+
+@interface GCDWebServerDataRequest () {
+@private
+  NSMutableData* _data;
+  
+  NSString* _text;
+  id _jsonObject;
+}
+@end
+
+@implementation GCDWebServerDataRequest
+
+@synthesize data=_data;
+
+- (BOOL)open:(NSError**)error {
+  if (self.contentLength != NSUIntegerMax) {
+    _data = [[NSMutableData alloc] initWithCapacity:self.contentLength];
+  } else {
+    _data = [[NSMutableData alloc] init];
+  }
+  if (_data == nil) {
+    if (error) {
+      *error = [NSError errorWithDomain:kGCDWebServerErrorDomain code:-1 userInfo:@{NSLocalizedDescriptionKey: @"Failed allocating memory"}];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+- (BOOL)writeData:(NSData*)data error:(NSError**)error {
+  [_data appendData:data];
+  return YES;
+}
+
+- (BOOL)close:(NSError**)error {
+  return YES;
+}
+
+- (NSString*)description {
+  NSMutableString* description = [NSMutableString stringWithString:[super description]];
+  if (_data) {
+    [description appendString:@"\n\n"];
+    [description appendString:GCDWebServerDescribeData(_data, self.contentType)];
+  }
+  return description;
+}
+
+@end
+
+@implementation GCDWebServerDataRequest (Extensions)
+
+- (NSString*)text {
+  if (_text == nil) {
+    if ([self.contentType hasPrefix:@"text/"]) {
+      NSString* charset = GCDWebServerExtractHeaderValueParameter(self.contentType, @"charset");
+      _text = [[NSString alloc] initWithData:self.data encoding:GCDWebServerStringEncodingFromCharset(charset)];
+    } else {
+      GWS_DNOT_REACHED();
+    }
+  }
+  return _text;
+}
+
+- (id)jsonObject {
+  if (_jsonObject == nil) {
+    NSString* mimeType = GCDWebServerTruncateHeaderValue(self.contentType);
+    if ([mimeType isEqualToString:@"application/json"] || [mimeType isEqualToString:@"text/json"] || [mimeType isEqualToString:@"text/javascript"]) {
+      _jsonObject = [NSJSONSerialization JSONObjectWithData:_data options:0 error:NULL];
+    } else {
+      GWS_DNOT_REACHED();
+    }
+  }
+  return _jsonObject;
+}
+
+@end