How to convert URL Request to cURL?
I know there are plugins available in Alamofire / Moya.
But I'm using native code.
Here is how I'm generating URLRequest.
var urlRequest = URLRequest(url: url) // URL is a param herel
var newHeaders: [String: String]
if let cookies = HTTPCookieStorage.shared.cookies {
newHeaders = HTTPCookie.requestHeaderFields(with: cookies)
} else {
newHeaders = [: ]
}
newHeaders = // add few more headers here
urlRequest.allHTTPHeaderFields = newHeaders
urlRequest.httpBody = data // set request body
How to log a cURL of above request?
You can simply try this
URLRequest to cURL
To use it in your code first import that extension and then simply call urlRequest.cURL() or urlRequest.cURL(pretty: true) to print pretty formatted curl.
EDIT: Now the above gist has Alamofire support also
Related
Im currently trying to work with the pho.to API in my iOS application. I am experimenting with making simple requests according to the documentation, however I cannot seem to get the request to go through successfully. Inside my API client file, I have this code:
let dataStr = """
<image_process_call>
<image_url>http://developers.pho.to/img/girl.jpg</image_url>
<methods_list>
<method order="1">
<name>desaturation</name>
</method>
<method order="2">
<name>caricature</name>
<params>type=1;crop_portrait=true</params>
</method>
</methods_list>
<thumb1_size>100</thumb1_size>
</image_process_call>
"""
let encodedStr = dataStr.replacingOccurrences(of: "\n", with: "").replacingOccurrences(of: " ", with: "")
let signData = encodedStr.hmac(key: key)
let urlStr = "https://opeapi.ws.pho.to/addtask/?app_id=\(appId)&key=\(key)&sign_data=\(signData)&data=\(encodedStr.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)!))"
The HMAC encoding is being done according to this Stack Overflow post. Unfortunately when making a request to this URL using URLSession I get this response:
<?xml version=\"1.0\"?>\n<image_process_response><status>SecurityError</status><err_code>614</err_code><description>Error in POST parameters: one or more parameters (DATA , SIGN_DATA or APP_ID) are empty</description></image_process_response>
I feel like my issue is more related to actually forming the request rather than something specific to the API itself. I know my code is a little messy, however I was hoping that somebody could point me in the right direction in terms of making a request like this. Thanks!
As per their documentation you can see that data sent over from POST requests are in body (In cURL calls -d specifies the body of the request)
You are sending params/data in query, which the pho.to API doesn't accept, hence the error.
Here's a sample on how you can do:
let defaultSessionConfiguration = URLSessionConfiguration.default
let defaultSession = URLSession(configuration: defaultSessionConfiguration)
// Setup the request with URL
let url = URL(string: "https://opeapi.ws.pho.to/addtask")!
var urlRequest = URLRequest(url: url)
// Convert POST string parameters to data using UTF8 Encoding
let postData = yourXMLString.data(using: .utf8)
// Set the httpMethod and assign httpBody
urlRequest.httpMethod = "POST"
urlRequest.httpBody = postData
// Create dataTask
let dataTask = defaultSession.dataTask(with: urlRequest) { (data, response, error) in
// Handle your response here
}
// Fire the request
dataTask.resume()
I'm having a problem sending a POST request with Alamofire.
I need to send the usser and password fields as application/x-www-form-urlencode and also some query data in the url.
I am creating a URLRequest to handle the process, but I'm getting always a 400 response from the server, so I guess the problem must be in the way I create the request.
This is the example in Postman:
I need to send a param in the url and two more in as application/x-www-form-urlencode
Postman 1 - Parameters
Postman 2 - ContentType
I need to do this (that i have in Android)
#FormUrlEncoded
#POST(Constants.AUTH_LDAP)
Call<ResponseBody> authLdap(
#Query(value = Constants.PARAM_REQ, encoded = true) String req,
#Field(Constants.PARAM_LOGIN) String login,
#Field(Constants.PARAM_PASSWORD) String password
);
And this is what I have in swift
let queryParamters = [Constants.Params.PARAM_REQ:req]
let headers = ["Content-Type": "application/x-www-form-urlencoded"]
let fieldParameters = [
Constants.Params.PARAM_LOGIN : user,
Constants.Params.PARAM_PASSWORD : pass]
let url = URL(string: Constants.EndPoints.AUTH_LDAP)
let request = URLRequest(url: url!)
let encoding = try URLEncoding.default.encode(request, with: queryParamters as Parameters)
let encodingpa = try URLEncoding.httpBody.encode(request, with: fieldParameters as Parameters)
var urlRequest = encodingpa
urlRequest.url = encoding.url
urlRequest.allHTTPHeaderFields = headers
Alamofire.request(urlRequest).responseData(completionHandler: { response in
switch response.result {
case .success:
print("sucess")
print(response.response)
case .failure(let error):
print(error)
}
})
Thanks for your help.
Try to create url from queryParameters using URLComponents like
var urlComponents = URLComponents(string: Constants.EndPoints.AUTH_LDAP)!
urlComponents.queryItems = [
URLQueryItem(name: Constants.Params.PARAM_REQ, value: req)
]
let headers = ["Content-Type": "application/x-www-form-urlencoded"]
var request = URLRequest(url: urlComponents.url!)
request.httpMethod = "POST"
request.httpBody = try? JSONSerialization.data(withJSONObject: fieldParameters)
request.allHTTPHeaderFields = headers
Alamofire.request(request).responseJSON { response in
}
My question is simple: how do you call a HTTP GET Request in Swift?
I am trying to retrieve specific data from server (I have the URL string), the problem is that the previous answers I saw, doesn't explain thoroughly how to request an HTTP Get and save the retrieved information in a variable to be used later? Thanks in advance!
Here's what I have so far:
let myURL = NSURL(string:"https://api.thingspeak.com/channels/CHANNEL_ID/last_entry
_id.txt");
let request = NSMutableURLRequest(url:myURL! as URL);
request.httpMethod = "GET"
Not sure what do following requesting the GET.
In your post you are missing the part that does the actual getting to of the data.
Your code should look something like this to get the value out of the text file.
var lastID: String?
let myURL = NSURL(string:"https://api.thingspeak.com/channels/1417/last_entry_id.txt");
let request = NSMutableURLRequest(url:myURL! as URL);
//request.httpMethod = "GET" // This line is not need
// Excute HTTP Request
let task = URLSession.shared.dataTask(with: request as URLRequest) {
data, response, error in
// Check for error
if error != nil
{
print("error=\(error)")
return
}
// Print out response string
let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("responseString = \(responseString!)")
lastID = "\(responseString!)" // Sets some variable or text field. Not that its unwrapped because its an optional.
}
task.resume()
This is my first question here and I have not much experience in coding so please bear with me. Thanks!
I defined some documents in my Bluemix Cloudant account with different cars which have different characteristics. I want to get one entry from an IOS Swift front-end App.
This is an example query url:
https://$ACCOUNT-bluemix.cloudant.com/cars/_design/car_index/_search/car_index_name?q=size:small
Now the problem: If I use this url in a browser I get the correct results in JSON format back without any error. But if the app makes the request a function-clause error is logged while the request itself seems to be successful.
I read that a function_clause error is caused by some bug in the Javascript Cloudant uses for indexing the documents. The Javascript I'm using is exactely the same as Cloudant states it in the tutorials.
Has anyone an idea why it works in the browser but not in the App?
Thank you very much for any help!
Here is all the code:
This is the method I use in swift to make the request:
func databaseRequest(size: String, interior: String, fuel: String) {
let baseURL = "https://$ACCOUNT-bluemix.cloudant.com/cars/_design/car_index/_search/car_index_name?q="
let queryURL = "size:\(size)"
let completeURL: String = baseURL + queryURL
let completeURLModified = completeURL.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)
let requestURL = URL(string: completeURLModified!)
var request = URLRequest(url: requestURL!)
request.httpMethod = "GET"
request.setValue("Basic \(credentials)", forHTTPHeaderField: "Authorization")
let task = URLSession.shared.dataTask(with: request){data, response, error in
guard error == nil else{
print("There was an error:", error as Any)
return
}
guard data == data else{
print("Data is empty")
return
}
let jsonResponse = try! JSONSerialization.jsonObject(with: data!, options: [])
print("This is JSON Response", jsonResponse)
}; task.resume()
}
This is the response from the JSON answer:
This is JSON Response {
error = "unknown_error";
reason = "function_clause";
ref = 1944801346;
}
The rest of log from http headers if this is helpful:
Optional(<NSHTTPURLResponse: 0x6080000349c0> { URL: https://$ACCOUNT-bluemix.cloudant.com/cars/_design/car_index/_search/car_index_name?q=size:small } { status code: 500, headers {
"Cache-Control" = "must-revalidate";
"Content-Length" = 70;
"Content-Type" = "application/json";
Date = "Thu, 24 Nov 2016 04:41:03 GMT";
Server = "CouchDB/2.0.0 (Erlang OTP/17)";
"Strict-Transport-Security" = "max-age=31536000";
Via = "1.1 lb1.bm-cc-dal-01 (Glum/1.31.3)";
"X-Cloudant-Backend" = "bm-cc-dal-01";
"X-Content-Type-Options" = nosniff;
"X-Couch-Request-ID" = 51e5e0b5e1;
"X-Couch-Stack-Hash" = 1944801346;
"X-CouchDB-Body-Time" = 0;
Last but not least the Javascript file I use as Index in the design document in Cloudant:
function (doc) {
index("name", doc.name, {"store": true});
if (doc.fuel){ index("fuel", doc.fuel, {"store": true});}
if (doc.interior){ index("interior", doc.interior, {"store": true});}
if (doc.size){index("size", doc.size, {"store": true});
}}
I think this error is due to cloudant trying to decode whatever you passed as \(credentials) as a base64 encoded string. If \(credentials) is not a valid base64 encoded string (e.g. contains characters other than a-z, A-Z, 0-9, +, / and =), then my guess is that cloudant's base64 decoding function fails with the above error.
You need to make sure that \(credentials) is the string <your_username>:<your_password> encoded correctly. E.g. if your username is john and your password is doe, then \(credentials) should be am9objpkb2U=.
I'm trying to make a simple get request for using Zomato's API to get JSON data. I have an API Key but I'm not sure how to use it in my normal NSURLSession call. I don't have a username or password to provide, just an 32 char API key.
The curl command is given as:
curl -X GET --header "Accept: application/json" --header "user_key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxx" "https://developers.zomato.com/api/v2.1/search?entity_id=280&entity_type=city&count=5&cuisines=55"
My request code is here:
let url = NSURL(string: myURL)!
let urlSession = NSURLSession.sharedSession()
//add api key to header somewhere here?
let myQuery = urlSession.dataTaskWithURL(url, completionHandler: { data, response, error -> Void in
//I have some error handling here
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as! NSDictionary
let myArray:NSArray = jsonResult["restaurants"] as! NSArray
})
myQuery.resume()
The documentation for NSURLSession.sharedSession() says:
In other words, if you’re doing anything with caches, cookies, authentication, or custom networking protocols, you should probably be using a custom session instead of the shared session.
You can create your own custom session and include your headers as follows:
let url = NSURL(string: myURL)!
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
config.HTTPAdditionalHeaders = [
"Accept": "application/json",
"user_key": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
]
let urlSession = NSURLSession(configuration: config)
let myQuery = urlSession.dataTaskWithURL(url, completionHandler: {
data, response, error -> Void in
/* ... */
})
myQuery.resume()