How to make synchronous url requests with swift 3

How to make synchronous url requests with swift 3

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How to make synchronous url requests with swift 3
Tag : development , By : Alex
Date : November 28 2020, 11:01 PM

fixed the issue. Will look into that further Your three-step problem can be solved via the use of a completion handler, i.e., a callback handler a la Node.js convention:
import Foundation
import Kitura
import HeliumLogger
import LoggerAPI

let session = URLSession(configuration: URLSessionConfiguration.default)

Log.logger = HeliumLogger()

let router = Router()

router.get("/test") { req, res, next in
    let datatask = session.dataTask(with: URL(string: "http://www.example.com")!) { data, urlResponse, error in
        try! res.send(data: data!).end()


Kitura.addHTTPServer(onPort: 3000, with: router)

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GCDAsyncSocket for Synchronous Requests with Swift 1.2

Tag : ios , By : usingtechnology
Date : March 29 2020, 07:55 AM
wish help you to fix your issue So I decided to use NSOperation for this.
Created a class file called SyncRequest.swift with the following code:
import Foundation

class SyncRequest : NSOperation {

 var socket:GCDAsyncSocket! = nil
 var msgData:NSData! = nil

 override var concurrent: Bool {
   return false

 override var asynchronous: Bool {
   return false

 private var _executing: Bool = false
 override var executing: Bool {
    get {
        return _executing
    set {
        if (_executing != newValue) {
            _executing = newValue

private var _finished: Bool = false;
override var finished: Bool {
    get {
        return _finished
    set {
        if (_finished != newValue) {
            _finished = newValue

/// Complete the operation
func completeOperation() {
    executing = false
    finished  = true

override func start() {
    if (cancelled) {
        finished = true

    executing = true


 override func main() -> (){

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "didReadData:", name: "DidReadData", object: nil)


    func sendData() {
        socket.writeData(msgData, withTimeout: -1.0, tag: 0)
        println("Sending: \(msgData)")
        socket.readDataWithTimeout(-1.0, tag: 0)

    func didReadData(notif: NSNotification) {
        println("Data Received!")

        NSNotificationCenter.defaultCenter().removeObserver(self, name: "DidReadData", object: nil)



// sync the request to the controller
let queue = NSOperationQueue() // sync request queue
let requestOperation = SyncRequest()
requestOperation.socket = socket // pass the socket  to send through
requestOperation.msgData = msgData // pass the msgData to send
queue.maxConcurrentOperationCount = 1
public func socket(socket : GCDAsyncSocket!, didReadData data:NSData!, withTag tag:Int){

  NSNotificationCenter.defaultCenter().postNotificationName("DidReadData", object: data)


RxJs: How can I make synchronous requests?

Tag : javascript , By : Vijayant Singh
Date : March 29 2020, 07:55 AM
I hope this helps . You can have a look at merge(maxConcurrency) or flatmapwithmaxconcurrentoverload. You could start by reviewing these two SO questions : How to limit the concurrency of flatMap?, Limit number of requests at a time with RxJS and then the documentation links :
for merge(maxConcurrency) for flatmapwithmaxconcurrent

How to make scrapy requests synchronous

Tag : python-3.x , By : Peter Leung
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further If I understood correctly, the problem here is because the session information is stored in a stateful server. Right?
A way to handle this would be having one session for each state, managing it through cookiejars. E.g:
for year in years[1:]:
    for state in states[1:]:
        yield Request(
            # ...,
            meta={'cookiejar': state} 

Synchronous API requests with Queue in Swift?

Tag : ios , By : Caleb Ames
Date : March 29 2020, 07:55 AM
this one helps. You can create your own DispatchQueue and put you operations on it as DispatchWorkItems. It is serial per default. Just remember to call your completions on DispatchQueue.main if you plan to update the UI.
John Sundell has a wonderful article about DispatchQueues here:

Synchronous HTTP Requests in Swift

Tag : ios , By : ianium
Date : March 29 2020, 07:55 AM
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