swift - 如何在 Swift 中创建 QuickBlox session

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没有手动创建 Quickblox session 的示例。有人可以快速共享此代码吗？

Create session REST API

Answer 1

1) 只要确保添加 #import <CommonCrypto/CommonHMAC.h>到桥接的 Objective-C header 。

import Foundation

extension Data {

    func hexEncodedString() -> String {
        return map { String(format: "%02hhx", $0) }.joined()
    }
}

func digestHMac(signature:String, secret: String) -> String! {

    let secretData : Data = secret.data(using: .utf8)!
    let signatureData : Data = signature.data(using: .utf8)!

    let digest = UnsafeMutablePointer<UInt8>.allocate(capacity:Int(CC_SHA1_DIGEST_LENGTH))

    var hmacContext = CCHmacContext()
    CCHmacInit(&hmacContext, CCHmacAlgorithm(kCCHmacAlgSHA1), [UInt8](secretData), secretData.count)
    CCHmacUpdate(&hmacContext, [UInt8](signatureData), [UInt8](signatureData).count)
    CCHmacFinal(&hmacContext, digest)

    let cryptData = Data(bytes: digest, count: Int(CC_SHA1_DIGEST_LENGTH))

    return cryptData.hexEncodedString()
}
//Your 'API Application Identifier'
let applicaitonID = ""
//Your 'Authentication Key'
let authKey = ""
//Your 'Authentication Secret'
let authSecret = ""
//Your Quickblox API Endpoint
let apiEndpoint = "https://api.quickblox.com/session.json"
//Unix Timestamp It shouldn't be differ from time provided by NTP more than 60 minutes. We suggest you synchronize time on your devices with NTP service.
let timestamp = Int(Date().timeIntervalSince1970)
//Unique Random Value. Requests with the same timestamp and same value for nonce parameter can not be send twice.
let nonce = arc4random_uniform(1000000) + 1;

var payload = [

    "application_id" : applicaitonID,
    "auth_key": authKey,
    "nonce" : String(nonce),
    "timestamp" : String(timestamp)
]

//Request body is formed as the sorted (sorting alphabetically, as symbols, not as bytes) by increase the string array 'parameter=value', separated with the symbol "&".
let sortedKeys = Array(payload.keys).sorted(by: <)

var parametersString = ""
for key in sortedKeys {
    parametersString = parametersString + key + "=" + payload[key]! + "&"
}

parametersString = parametersString.substring(to: parametersString.index(before: parametersString.endIndex))
let parameters = parametersString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)!

let hmac = digestHMac(signature: parameters, secret: authSecret)
payload["signature"] = hmac

//Session Request
var request:NSMutableURLRequest = NSMutableURLRequest(url: URL(string: apiEndpoint)!)

request.httpMethod = "POST"
request.addValue("application/json", forHTTPHeaderField:"Content-Type")
request.httpBody = try! JSONSerialization.data(withJSONObject: payload, options: [])
print(payload)

let task = URLSession.shared.dataTask(with: request as URLRequest) { (data, response, error) in

    let json = try! JSONSerialization.jsonObject(with: data!)
    /* Response
    {
        session =     {
            "_id" = 589c94c0a28f9a15d7000037;
            "application_id" = 39854;
            "created_at" = "2017-02-09T16:11:44Z";
            "device_id" = 0;
            id = 61804;
            nonce = 243190;
            token = 419e64c861594b63b558b259f8b6e4fd4c009bae;
            ts = 1486656703;
            "updated_at" = "2017-02-09T16:11:44Z";
            "user_id" = 0;
        };
    }

    */
}

task.resume()

sleep(30)