//Refresh AccessToken when expired.
public static async Task <OAuth2AccessToken> RefreshTokenAsync(string expiredToken)
{
HttpClient httpClient = new HttpClient();
string postUrl = OAuth2Helper.FitbitOauthPostUrl;
var content = new FormUrlEncodedContent(new[]
{
new KeyValuePair <string, string>("grant_type", "refresh_token"),
new KeyValuePair <string, string>("refresh_token", expiredToken),
});
string clientIdConcatSecret = OAuth2Helper.Base64Encode(ClientId + ":" + ClientSecret);
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", clientIdConcatSecret);
HttpResponseMessage response = await httpClient.PostAsync(postUrl, content);
string responseString = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseString);
OAuth2AccessToken accessToken = OAuth2Helper.ParseAccessTokenResponse(responseString);
return(accessToken);
}
public static async Task <OAuth2AccessToken> ExchangeAuthCodeForAccessTokenAsync(string code)
{
HttpClient httpClient = new HttpClient();
string postUrl = OAuth2Helper.FitbitOauthPostUrl;
var content = new FormUrlEncodedContent(new[]
{
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("client_id", ClientId),
//new KeyValuePair<string, string>("client_secret", AppSecret),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("redirect_uri", RedirectUri)
});
string clientIdConcatSecret = OAuth2Helper.Base64Encode(ClientId + ":" + ClientSecret);
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", clientIdConcatSecret);
HttpResponseMessage response = await httpClient.PostAsync(postUrl, content);
string responseString = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseString);
OAuth2AccessToken accessToken = OAuth2Helper.ParseAccessTokenResponse(responseString);
return(accessToken);
}
