extension NSURLRequest: DebugPrintable

NSURLRequestExtension.swift

//
//  NSURLRequestExtension.swift
//
//  Source: https://gist.github.com/tomaskraina/d644af49e4968de85e34
//
//  Created by Tom Kraina on 21/04/2015.
//  Copyright (c) 2015 Tom Kraina. All rights reserved.
//

import Foundation

// Inspired by: https://github.com/Blackjacx/NSURLRequest-SHLogging, 

extension NSURLRequest {
    public func extendedDescription() -> String {
        
        var result = "<\(NSStringFromClass(self.dynamicType)): " + String(format: "%p", self)
        result += "; HTTPMethod=\(HTTPMethod ?? "nil"); URL=\(URL); timeoutInterval=\(String(format: "%.1fs", timeoutInterval))> {"
        
        // Add header fields.
        if let headers = allHTTPHeaderFields {
            result += "\nallHTTPHeaderFields {"
            for (key, value) in headers {
                result += "\n\t\(key) : '\(value)'"
            }
            result += "\n}"
        }
        
        if let body = HTTPBody {
            result += "\nHTTPBody {\n \(String(data: body, encoding: NSASCIIStringEncoding) ?? "")\n}"
        }
        
        return result + "\n}"
    }
    
    public override var debugDescription: String {
        return extendedDescription()
    }
    
    public override var description: String {
        return extendedDescription()
    }
}

If printed out, it displays something similar to the following:

<NSMutableURLRequest: 0x7fa91977e390; HTTPMethod=POST; URL=https://myapi.com/api/something; timeoutInterval=300.0s> {
allHTTPHeaderFields {
    Accept-Encoding : 'gzip'
    Content-Type : 'application/json'
    Accept : 'application/json'
}
HTTPBody {
    {"key1":"value1"}
}
}