Switches from GCDWebServer to CocoaHTTPServer so we can have HTTPS eventually

kordophone/Bridge/Operations/Utilities/MBIMHTTPUtilities.h

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+//
+//  MBIMHTTPUtilities.h
+//  kordophoned
+//
+//  Created by James Magahern on 11/16/18.
+//  Copyright © 2018 James Magahern. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NSString* MBIMWebServerFormatRFC822(NSDate *date);

kordophone/Bridge/Operations/Utilities/MBIMHTTPUtilities.m

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+//
+//  MBIMHTTPUtilities.c
+//  kordophoned
+//
+//  Created by James Magahern on 11/16/18.
+//  Copyright © 2018 James Magahern. All rights reserved.
+//
+
+#include "MBIMHTTPUtilities.h"
+
+static NSDateFormatter* _dateFormatterRFC822 = nil;
+static dispatch_queue_t _dateFormatterQueue = NULL;
+
+__attribute__((constructor))
+static void __InitializeDateFormatter()
+{
+    _dateFormatterQueue = dispatch_queue_create("dateFormatter", DISPATCH_QUEUE_SERIAL);
+    
+    _dateFormatterRFC822 = [[NSDateFormatter alloc] init];
+    _dateFormatterRFC822.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
+    _dateFormatterRFC822.dateFormat = @"EEE',' dd MMM yyyy HH':'mm':'ss 'GMT'";
+    _dateFormatterRFC822.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
+}
+
+NSString* MBIMWebServerFormatRFC822(NSDate *date)
+{
+    __block NSString *string = nil;
+    dispatch_sync(_dateFormatterQueue, ^{
+        string = [_dateFormatterRFC822 stringFromDate:date];
+    });
+    
+    return string;
+}

kordophone/Bridge/Operations/Utilities/MBIMJSONDataResponse.h

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+//
+//  MBIMJSONDataResponse.h
+//  kordophoned
+//
+//  Created by James Magahern on 11/16/18.
+//  Copyright © 2018 James Magahern. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <CocoaHTTPServer/CocoaHTTPServer.h>
+
+@interface MBIMJSONDataResponse : HTTPDataResponse
+
++ (instancetype)responseWithJSONObject:(id)object;
+
+@end

kordophone/Bridge/Operations/Utilities/MBIMJSONDataResponse.m

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+//
+//  MBIMJSONDataResponse.m
+//  kordophoned
+//
+//  Created by James Magahern on 11/16/18.
+//  Copyright © 2018 James Magahern. All rights reserved.
+//
+
+#import "MBIMJSONDataResponse.h"
+
+@implementation MBIMJSONDataResponse
+
++ (instancetype)responseWithJSONObject:(id)object
+{
+    NSData *data = [NSJSONSerialization dataWithJSONObject:object options:0 error:NULL];
+    if (data == nil) {
+        return nil;
+    }
+    
+    MBIMJSONDataResponse *response = [[self alloc] initWithData:data];
+    
+    return response;
+}
+
+- (NSDictionary *)httpHeaders
+{
+    return @{
+        @"Content-Type" : @"application/json; charset=utf-8"
+    };
+}
+
+@end