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tari-project#506 tari-project#507 tari-project#509 tari-project#510 tari-project#512 added check for network connection speed
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,88 @@ | ||
| // NetworkSpeedProvider.swift | ||
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| /* | ||
| Package MobileWallet | ||
| Created by S.Shovkoplyas on 24.07.2020 | ||
| Using Swift 5.0 | ||
| Running on macOS 10.15 | ||
| Copyright 2019 The Tari Project | ||
| Redistribution and use in source and binary forms, with or | ||
| without modification, are permitted provided that the | ||
| following conditions are met: | ||
| 1. Redistributions of source code must retain the above copyright notice, | ||
| this list of conditions and the following disclaimer. | ||
| 2. 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. | ||
| 3. Neither the name of the copyright holder nor the names of | ||
| its contributors may 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 THE COPYRIGHT HOLDER OR | ||
| CONTRIBUTORS 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. | ||
| */ | ||
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| import Foundation | ||
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| class NetworkSpeedProvider: NSObject { | ||
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| typealias SpeedTestCompletion = (_ megabytesPerSecond: Float, _ error: Error?) -> Void | ||
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| private var startTime = CFAbsoluteTime() | ||
| private var stopTime = CFAbsoluteTime() | ||
| private var bytesReceived: Float = 0 | ||
| private var speedTestCompletionHandler: SpeedTestCompletion? | ||
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| func testSpeed(completion: @escaping SpeedTestCompletion) { | ||
| testDownloadSpeed(withTimout: 5.0, completionHandler: completion) | ||
| } | ||
| } | ||
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| extension NetworkSpeedProvider: URLSessionDataDelegate, URLSessionDelegate { | ||
| func testDownloadSpeed(withTimout timeout: TimeInterval, completionHandler: @escaping SpeedTestCompletion) { | ||
| let urlForSpeedTest = URL(string: "https://images.apple.com/v/imac-with-retina/a/images/overview/5k_image.jpg") | ||
| startTime = CFAbsoluteTimeGetCurrent() | ||
| stopTime = startTime | ||
| bytesReceived = 0 | ||
| speedTestCompletionHandler = completionHandler | ||
| let configuration = URLSessionConfiguration.ephemeral | ||
| configuration.timeoutIntervalForResource = timeout | ||
| let session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil) | ||
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| guard let checkedUrl = urlForSpeedTest else { return } | ||
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| session.dataTask(with: checkedUrl).resume() | ||
| } | ||
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| func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) { | ||
| bytesReceived += Float(data.count) | ||
| stopTime = CFAbsoluteTimeGetCurrent() | ||
| } | ||
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| func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) { | ||
| let elapsed = (stopTime - startTime) //as? CFAbsoluteTime | ||
| let speed: Float = elapsed != 0 ? bytesReceived / (Float(CFAbsoluteTimeGetCurrent() - startTime)) / 1024.0 / 1024.0 : -1.0 | ||
| // treat timeout as no error (as we're testing speed, not worried about whether we got entire resource or not | ||
| if error == nil || ((((error as NSError?)?.domain) == NSURLErrorDomain) && (error as NSError?)?.code == NSURLErrorTimedOut) { | ||
| speedTestCompletionHandler?(speed, nil) | ||
| } else { | ||
| speedTestCompletionHandler?(speed, error) | ||
| } | ||
| } | ||
| } |
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