CLGeocoder error. Code GEOErrorDomain = -3

Question

When I tried to use reverse geocoding, this error message appeared.

Geocoding Error: Error Domain = GEOErrorDomain Code = -3 "(null)"

My code is below:

import CoreLocation geocoder.reverseGeocodeLocation(location) { (placemarks, error) in if let placemarks = placemarks { reverseGeocodeLocations[hash] = placemarks } callback(placemarks, error) } 

This only works from time to time, and I request reverseGeocode several times per second. So, I think this error message is related to the request limit or something else? Is there any documentation about the geocoding request for apples? Thanks for the promotion.

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Update

here is my whole code for the request

 import CoreLocation fileprivate struct ReverseGeocodeRequest { private static let geocoder = CLGeocoder() private static var reverseGeocodeLocations = [Int: [CLPlacemark]]() private static let reverseGeocodeQueue = DispatchQueue(label: "ReverseGeocodeRequest.reverseGeocodeQueue") private static var nextPriority: UInt = 0 fileprivate static func request(location: CLLocation, callback: @escaping ([CLPlacemark]?, Error?)->Void) { let hash = location.hash if let value = reverseGeocodeLocations[hash] { callback(value, nil) } else { reverseGeocodeQueue.async { guard let value = reverseGeocodeLocations[hash] else { geocoder.reverseGeocodeLocation(location) { (placemarks, error) in if let placemarks = placemarks { reverseGeocodeLocations[hash] = placemarks } callback(placemarks, error) } return } callback(value, nil) } } } let priority: UInt let location: CLLocation let handler : ([CLPlacemark]?, Error?)->Void private init (location: CLLocation, handler: @escaping ([CLPlacemark]?, Error?)->Void) { ReverseGeocodeRequest.nextPriority += 1 self.priority = ReverseGeocodeRequest.nextPriority self.location = location self.handler = handler } } extension ReverseGeocodeRequest: Comparable { static fileprivate func < (lhs: ReverseGeocodeRequest, rhs: ReverseGeocodeRequest) -> Bool { return lhs.priority < rhs.priority } static fileprivate func == (lhs: ReverseGeocodeRequest, rhs: ReverseGeocodeRequest) -> Bool { return lhs.priority == rhs.priority } } extension CLLocation { func reverseGeocodeLocation(callback: @escaping ([CLPlacemark]?, Error?)->Void) { ReverseGeocodeRequest.request(location: self, callback: callback) } func getPlaceName(callback: @escaping (Error?, String?)->Void) { self.reverseGeocodeLocation { (placemarks, error) in guard let placemarks = placemarks, error == nil else { callback(error, nil) return } guard let placemark = placemarks.first else { callback(nil, "Mysterious place") return } if let areaOfInterest = placemark.areasOfInterest?.first { callback(nil, areaOfInterest) } else if let locality = placemark.locality { callback(nil, locality) } else { callback(nil, "On the Earth") } } } } 

Answer 1

After searching everywhere for an answer, he was in the “Apples” documents!: /

https://developer.apple.com/reference/corelocation/clgeocoder/1423621-reversegeocodelocation

Geocoding requests are limited in speed for each application, so running too many requests in a short amount of time may cause some requests to fail. When the maximum speed is exceeded, the geocoder passes the error object with a network of values ​​to your completion handler.

When checking the error code in the completion handler, this is really a network error: 2

Hope this helps someone!

Answer 2

You rest CLGeocoder (). For example, I have a loop that checks an array of coordinates, if I, but CLGeocoder inside the loop, get the same error message as you.

Hope this helps.