This document discusses authentication with Twitter using OAuth and the WebAuthenticationBroker. It describes getting a request token from Twitter, continuing the authentication flow after redirect, and exchanging the request token for an access token. Code snippets show initializing the broker, handling continuation events, building OAuth parameters, and making the request to get the access token.

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9. http://okazuki.hatenablog.com/entry/2014/04/21/003008

10. WebAuthenticationBroker.GetCurrentApplicationCallbackUri()

13. protected async override void OnActivated(IActivatedEventArgs e)
{
//前半略
var continuationEventArgs = e as IContinuationActivatedEventArgs;
if (continuationEventArgs != null)
{
var page = rootFrame.Content as TwitterPage;
if (page != null)
{
page.ContinueWebAuthentication(e
as WebAuthenticationBrokerContinuationEventArgs);
}
}
Window.Current.Activate();
}

14. //パラメーターを生成
var options = new List<KeyValuePair<string, string>>(capacity: 1)
{
new KeyValuePair<string,string>("oauth_callback", callbackUri)
};
var headerParams = OAuthUtility.BuildBasicParameters("vPJVb79KWRIaTFAZ3ri5KY0cF",
"p1XJIHjnkvIF7zscQDOL1La4KpKfPNRTuvwIzSHDwtkv5YwtYe",
"https://api.twitter.com/oauth/access_token",
System.Net.Http.HttpMethod.Post,
new RequestToken(token, ""),
options);
var header = headerParams.Select(p => p.Key + "=" + p.Value.Wrap("¥"")).ToString(",");

15. //AccessTokenを取得
var client = new HttpClient();
var request = new HttpRequestMessage(
HttpMethod.Post,
"https://api.twitter.com/oauth/access_token")
{
Content = new FormUrlEncodedContent
(new List<KeyValuePair<string, string>>(capacity: 1)
{
new KeyValuePair<string,string>("oauth_verifier", verifier)
})};
request.Headers.Authorization = new AuthenticationHeaderValue("OAuth", header);
var response = await client.SendAsync(request);

17. using

18. OneMoreThing…

19. http://www.microsoft.com/ja-jp/events/developer/default.aspx