/// <summary>
/// Constructs the resource URI to the MOBILE REST API. For GET
/// requests the query string is concatenated into the Uri. For
/// POST requests the fields are ignored here but are later passed
/// encoded in the request body.
/// </summary>
/// <param name="resourceName">The name of the resource (relative part of the URI).</param>
/// <param name="method">The HTTP method (get or post).</param>
/// <param name="fields">The additional fields.</param>
/// <returns>The fully qualified URI to the resource.</returns>
private Uri ConstructResourceMobileUri(
string resourceName,
string method,
Dictionary <string, string> fields)
{
string relativePath = resourceName;
if (method == "GET" && (fields != null && fields.Count != 0))
{
relativePath = string.Format(
CultureInfo.InvariantCulture,
"{0}?{1}",
relativePath,
TeleSignService.ConstructQueryString(fields));
}
return(new Uri(
this.configuration.ServiceMobileAddress,
relativePath));
}
/// <summary>
/// Constructs a .NET WebRequest object for the request (using for Mobile).
/// </summary>
/// <param name="resourceName">The name of the resource - ie. the relative part of the URL.</param>
/// <param name="method">The http method - POST, DELETE, GET, PUT.</param>
/// <param name="fields">The fields that are the arguments to the request.</param>
/// <param name="authMethod">The method of authentication to use.</param>
/// <returns>A WebRequest object.</returns>
protected WebRequest ConstructWebMobileRequest(
string resourceName,
string method,
Dictionary <string, string> fields = null,
AuthenticationMethod authMethod = AuthenticationMethod.HmacSha1)
{
CheckArgument.NotNullOrEmpty(resourceName, "resourceName");
CheckArgument.NotNullOrEmpty(method, "method");
DateTime timeStamp = DateTime.UtcNow;
string nonce = Guid.NewGuid().ToString();
// When the Uri is constructed. If it is a GET request the fields
// are put into the Uri's query string eg ?foo=bar. When the
// method is POST the fields are not used in constructing the Uri,
// but below they are placed in the encoded body.
Uri fullUri = this.ConstructResourceMobileUri(
resourceName,
method,
fields);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(fullUri);
request.Method = method;
string contentType = string.Empty;
string encodedBody = string.Empty;
if (method == "POST")
{
contentType = "application/x-www-form-urlencoded";
encodedBody = TeleSignService.ConstructQueryString(fields);
}
string authorizationString = this.authentication.ConstructAuthorizationString(
resourceName,
method,
timeStamp,
nonce,
contentType,
encodedBody,
authMethod);
request.Headers.Add("Authorization", authorizationString);
request.Headers.Add("x-ts-auth-method", this.authentication.MapAuthenticationMethodToHeaderString(authMethod));
request.Headers.Add("x-ts-date", timeStamp.ToString("r"));
request.Headers.Add("x-ts-nonce", nonce);
if (method == "POST")
{
byte[] body = Encoding.UTF8.GetBytes(encodedBody);
request.Accept = "application/json";
request.ContentType = contentType;
request.ContentLength = body.Length;
using (Stream stream = request.GetRequestStream())
{
stream.Write(body, 0, body.Length);
}
}
return(request);
}
