public Task <TokenResponse <AccessToken> > GetAccessToken(
string accessTokenUrl,
RequestToken requestToken,
string verifier,
IEnumerable <KeyValuePair <string, string> >?parameters = null,
HttpContent?postValue = null,
CancellationToken cancellationToken = default)
{
if (accessTokenUrl == null)
{
throw new ArgumentNullException(nameof(accessTokenUrl));
}
if (requestToken == null)
{
throw new ArgumentNullException(nameof(requestToken));
}
if (verifier == null)
{
throw new ArgumentNullException(nameof(verifier));
}
var verifierParam = new KeyValuePair <string, string>(
"oauth_verifier",
verifier.Trim());
if (parameters == null)
{
parameters = Enumerable.Empty <KeyValuePair <string, string> >();
}
var handler = new OAuthMessageHandler(
consumerKey,
consumerSecret,
token: requestToken,
optionalOAuthHeaderParameters: parameters.Concat(new[] { verifierParam }));
return(GetTokenResponse(
accessTokenUrl,
handler,
postValue,
(key, secret) => new AccessToken(key, secret),
cancellationToken));
}
async Task <TokenResponse <T> > GetTokenResponse <T>(
string url,
OAuthMessageHandler handler,
HttpContent?postValue,
Func <string, string, T> tokenFactory,
CancellationToken cancellationToken)
where T : Token
{
var client = new HttpClient(handler);
var response = await client.PostAsync(
url,
postValue ?? new FormUrlEncodedContent(
Enumerable.Empty <KeyValuePair <string, string> >()),
cancellationToken)
.ConfigureAwait(false);
var tokenBase = await response.Content.ReadAsStringAsync()
.ConfigureAwait(false);
if (response.StatusCode != System.Net.HttpStatusCode.OK)
{
throw new HttpRequestException(
response.StatusCode + ":" + tokenBase);
}
var splitted = tokenBase.Split('&')
.Select(s => s.Split('='))
.ToLookup(xs => xs[0], xs => xs[1]);
var token = tokenFactory(
splitted["oauth_token"].First().UrlDecode(),
splitted["oauth_token_secret"].First().UrlDecode());
var extraData = splitted.Where(kvp => kvp.Key != "oauth_token" && kvp.Key != "oauth_token_secret")
.SelectMany(g => g, (g, value) => new { g.Key, Value = value })
.ToLookup(kvp => kvp.Key, kvp => kvp.Value);
return(new TokenResponse <T>(token, extraData));
}
public Task <TokenResponse <RequestToken> > GetRequestToken(
string requestTokenUrl,
IEnumerable <KeyValuePair <string, string> >?parameters = null,
HttpContent?postValue = null,
CancellationToken cancellationToken = default)
{
if (requestTokenUrl == null)
{
throw new ArgumentNullException(nameof(requestTokenUrl));
}
var handler = new OAuthMessageHandler(
consumerKey,
consumerSecret,
token: null,
optionalOAuthHeaderParameters: parameters);
return(GetTokenResponse(
requestTokenUrl,
handler,
postValue,
(key, secret) => new RequestToken(key, secret),
cancellationToken));
}
