I am trying to fetch the subscription data from Wundergraph server by using URLSession to make network requests and handle the responses by enabling httpShouldUsePipelining. Here is my code
class SubscriptionNetworkManager{
private var request: URLRequest!
public init(_ url: String,
withURLParameter jsonObject: [String: Any]) {
guard let jsonData = try? JSONSerialization.data(withJSONObject: jsonObject, options: []),
let jsonString = String(data: jsonData, encoding: .utf8),
var urlComponents = URLComponents(string: url)
else {
return
}
urlComponents.queryItems = [URLQueryItem(name: "wg_variables", value: jsonString)]
if let finalUrl = urlComponents.url {
self.request = URLRequest(url: finalUrl)
print(finalUrl )
}
self.request.httpMethod = HttpMethod.get.rawValue
self.request.httpShouldUsePipelining = true
if let accessToken = UserDefaults.accessToken {
let tempHeader = [
"Authorization": "Bearer \(accessToken)"
]
self.request.allHTTPHeaderFields = tempHeader
let encoder = JSONEncoder()
if let jsonData = try? encoder.encode(tempHeader) {
let jsonString = String(data: jsonData, encoding: .utf8) ?? ""
print("headers:-> ", jsonString)
}
} else {
fatalError("No Header!!!")
}
}
// Fetch data from specified url
func fetchData<T: Codable>(withCompletion completion: @escaping (T) -> Void,
withCompletionWithError errors: @escaping (String) -> Void) {
URLSession.shared.dataTask(with: self.request) { (data, response, error) in
DispatchQueue.main.async {
if let error = error {
let errorMessage = error.localizedDescription
errors(errorMessage)
return
}
guard let data = data else {
let errorMessage = error?.localizedDescription ?? "Failed to fetch courses"
errors(errorMessage)
return
}
self.printOutResponse(data: data, response: response)
do {
let decodedData = try JSONDecoder().decode(T.self, from: data)
completion(decodedData)
} catch {
errors("Error decoding data: \(error)")
}
}
}.resume()
}
// MARK: Print Response from API
private func printOutResponse(data: Data, response: URLResponse?) {
// for printing response
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
print(json)
} catch {
print(error)
}
guard let httpResponse = response as? HTTPURLResponse else { return }
let statusCode = httpResponse.statusCode
print("Status Code =>", statusCode)
}
}
I have called through
let url = Urls.baseUrl + "protected/SubscribeToConversationsByChannelId"
let object = ["channel_id": "d111350f-80cb-4fab-beaa-84c090717d2f"]
SubscriptionNetworkManager.init(url,
withURLParameter: object).fetchData() { (response: ProtectedSubscribeToConversationsByChannelIdResponseDataHasuraMochiConversations) in
print(response)
} withCompletionWithError: { error in
print(error)
}
I repeatedly get timeout error here is the detail error
Task <D5C6F257-DEF4-491C-89C4-77425227490A>.<4> finished with error [-1001] Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=-2102, NSUnderlyingError=0x2824b8c90 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <D5C6F257-DEF4-491C-89C4-77425227490A>.<4>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <D5C6F257-DEF4-491C-89C4-77425227490A>.<4>"
), NSLocalizedDescription=The request timed out.,
But when I tried through Postman, by providing same params, and header, I get status code 200.
Here is my postman Screenshot. 
Then from postman I can find cURL under Code snippet, by paste cURL on terminal, after updating server, I can see real time data in terminal. Currently, We are using WunderGraph Server. I tried a lot but can't able to fix it out. Can anyone help me to solve this issue?
