async Task <ICoapClient> CreateClient(PythonDictionary parameters)
{
var host = Convert.ToString(parameters.get("host", string.Empty));
var port = Convert.ToInt32(parameters.get("port", 5684));
var protocol = Convert.ToString(parameters.get("protocol", "dtls"));
var identity = Convert.ToString(parameters.get("identity", string.Empty));
var key = Convert.ToString(parameters.get("key", string.Empty));
var timeout = Convert.ToInt32(parameters.get("timeout", 5000));
var connectOptionsBuilder = new CoapClientConnectOptionsBuilder()
.WithHost(host)
.WithPort(port);
if (protocol == "dtls")
{
connectOptionsBuilder.WithDtlsTransportLayer(o => o.WithPreSharedKey(identity, key));
}
var connectOptions = connectOptionsBuilder.Build();
var coapClient = new CoapFactory().CreateClient();
using (var cancellationTokenSource = new CancellationTokenSource(timeout))
{
await coapClient.ConnectAsync(connectOptions, cancellationTokenSource.Token).ConfigureAwait(false);
}
return(coapClient);
}
public async Task Connect_Invalid_Host()
{
using (var coapClient = new CoapFactory().CreateClient())
{
await coapClient.ConnectAsync(new CoapClientConnectOptions()
{
Host = "invalid_host"
}, CancellationToken.None);
}
}
public async Task Connect_Valid_Host_With_Invalid_Port_Dtls()
{
using (var coapClient = new CoapFactory().CreateClient())
{
var options = new CoapClientConnectOptionsBuilder()
.WithHost("127.0.0.1")
.WithPort(5555)
.WithDtlsTransportLayer(o =>
{
o.WithPreSharedKey("a", "b");
})
.Build();
await coapClient.ConnectAsync(options, CancellationToken.None);
}
}
public async Task Timeout_When_No_Response_Received()
{
using (var coapClient = new CoapFactory().CreateClient())
{
var options = new CoapClientConnectOptionsBuilder()
.WithHost("127.0.0.1")
.WithPort(5555)
.Build();
await coapClient.ConnectAsync(options, CancellationToken.None);
var request = new CoapRequestBuilder()
.WithMethod(CoapRequestMethod.Get)
.Build();
await coapClient.RequestAsync(request, CancellationToken.None);
}
}
static async Task Main()
{
var optionBuilder = new CoapMessageOptionFactory();
var coapClient = new CoapFactory().CreateClient();
Console.WriteLine("CONNECTING...");
var request = new CoapRequest
{
Method = CoapRequestMethod.Get,
Uri = "15001"
};
await coapClient.ConnectAsync(new CoapClientConnectOptions
{
Host = "192.168.1.228",
Port = 5684,
TransportLayer = new UdpWithDtlsCoapTransportLayer()
{
Credentials = new PreSharedKey
{
Identity = Encoding.ASCII.GetBytes("IDENTITY"),
Key = Encoding.ASCII.GetBytes("lqxbBH6o2eAKSo5A")
}
}
}, CancellationToken.None);
var response = await coapClient.Request(request, CancellationToken.None);
Console.WriteLine("DATA RECEIVED");
Console.WriteLine("Code = " + response.StatusCode);
Console.WriteLine("Payload = " + Encoding.ASCII.GetString(response.Payload.ToArray()));
Console.ReadLine();
}
