HTTP/HTTPS interface

var url = "https://url.ecall.ch/api/sms";
var client = new WebClient();
var method = "POST";
var parameters = new NameValueCollection();

parameters.Add("username", "foo");
parameters.Add("password", "bar");
parameters.Add("message", "Hello eCall World");
parameters.Add("address", "0041XXXXXXXXX");

client.UploadValues(url, method, parameters);

Dim url = "https://url.ecall.ch/api/sms"
Dim client As New WebClient
Dim method = "POST"
Dim parameters As New NameValueCollection
parameters.Add("username", "foo")
parameters.Add("password", "bar")
parameters.Add("message", "Hello eCall World")
parameters.Add("address", "0041XXXXXXXXX")
client.UploadValues(url, method, parameters)

curl -H "Content-type: application/x-www-form-urlencoded"
     -d "Username=foo"
     -d "Password=bar"
     -d "Address=0041XXXXXXX"
     -d "Message=Hello eCall World"
     https://url.ecall.ch/api/SMS

String uri = "https://url.ecall.ch/api/sms";
String data = "username=foo&password=bar&address=0041XXXXXXXXX&message=Hello eCall World";

HttpClient client = HttpClient.newBuilder().build();
HttpRequest request = HttpRequest.newBuilder()
         .uri(URI.create(uri))
         .header("Content-Type", "application/x-www-form-urlencoded")
         .POST(HttpRequest.BodyPublishers.ofString(data))
         .build();

HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());