@eskimo If the user is connected over wifi and we are consuming the cellular data of the user using NWConnection, could it create an issue for the developer in terms of app store guidelines or the app getting rejected, etc? Do we need to inform the user that we will consume the mobile data irrespective of wifi connection status as part of any TnC?
abhijeet.rai
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Try this out:
import Foundation
import Network
class CellularRequest {
static func execute(url: URL,
httpMethod: String,
postBody: String? = nil,
completion: @escaping (_ error: NWError?, _ httpBody: String?, _ httpHeaders: String?)
-> Void) {
guard let urlHost = url.host else { return }
let host = NWEndpoint.Host(urlHost)
let tlsOptions = NWProtocolTLS.Options()
let tcpOptions = NWProtocolTCP.Options()
let parameters = NWParameters(tls: tlsOptions, tcp: tcpOptions)
parameters.prohibitExpensivePaths = false
#if targetEnvironment(simulator)
parameters.requiredInterfaceType = .loopback
#else
parameters.requiredInterfaceType = .cellular
#endif
let connection = NWConnection(host: host, port: .https, using: parameters)
connection.stateUpdateHandler = { newState in
switch newState {
case .ready:
// The connection is ready; you can now send an HTTP request
var httpRequest = "\(httpMethod) \(url.path) HTTP/1.1\r\nHost: \(urlHost)\r\n"
if let postBody = postBody {
httpRequest += "Content-Type: application/json\r\n"
httpRequest += "Content-Length: \(postBody.utf8.count)\r\n\r\n"
httpRequest += postBody
} else {
httpRequest += "\r\n"
}
let requestData = httpRequest.data(using: .utf8)
connection.send(content: requestData, completion: .contentProcessed { error in
if let error = error {
completion(error, nil, nil)
} else {
connection.receive(minimumIncompleteLength: 1, maximumLength: .max) { data, _, _, error in
if let data = data {
if let response = String(data: data, encoding: .utf8),
response.contains("\r\n\r\n") {
// The headers are complete, and we have the full response
let headersAndBody = response.components(separatedBy: "\r\n\r\n")
completion(nil, headersAndBody.first, headersAndBody.last)
}
} else if let error = error {
completion(error, nil, nil)
}
}
}
})
case let .failed(error), let .waiting(error):
completion(error, nil, nil)
default:
break
}
}
// Start the connection
connection.start(queue: DispatchQueue.global())
}
}