Revert "removed unnecessary redirectUrl argument."

This reverts commit 93064541e4.

samples/05_simple_blazor_discord_login/Pages/Index.razor.cs

@@ -39,14 +39,14 @@ namespace _05_simple_blazor_discord_login.Pages
                 }
                 if (QueryHelpers.ParseQuery(uri.Query.TrimStart('?')).TryGetValue("code", out var code))
                 {
-                    RestToken = await DiscordRestClient.GetTokenAsync(TokenType.Code, code, new List<string> { "identify" }); //this can give you an exception if the token is expired!
+                    RestToken = await DiscordRestClient.GetTokenAsync(TokenType.Code, code, navigationManager.BaseUri, new List<string> { "identify" }); //this can give you an exception if the token is expired!
                     await DiscordRestClient.LoginAsync(TokenType.Bearer, RestToken.Token);
                     User = DiscordRestClient.CurrentUser;
                     StateHasChanged();
                 }
                 if (QueryHelpers.ParseQuery(uri.Query.TrimStart('?')).TryGetValue("refresh_token", out var refreshToken))
                 {
-                    RestToken = await DiscordRestClient.GetTokenAsync(TokenType.Refresh, refreshToken, new List<string> { "identify" }); //this can give you an exception if the token is expired!
+                    RestToken = await DiscordRestClient.GetTokenAsync(TokenType.Refresh, refreshToken, navigationManager.BaseUri, new List<string> { "identify" }); //this can give you an exception if the token is expired!
                     await DiscordRestClient.LoginAsync(TokenType.Bearer, RestToken.Token);
                     User = DiscordRestClient.CurrentUser;
                     StateHasChanged();

src/Discord.Net.Rest/ClientHelper.cs

@@ -16,9 +16,9 @@ namespace Discord.Rest
             var model = await client.ApiClient.GetMyApplicationAsync(options).ConfigureAwait(false);
             return RestApplication.Create(client, model);
         }
-        public static async Task<RestToken> GetTokenAsync(BaseDiscordClient client, TokenType tokenType, string token, IEnumerable<string> scopes, RequestOptions options)
+        public static async Task<RestToken> GetTokenAsync(BaseDiscordClient client, TokenType tokenType, string token, string redirectUrl, IEnumerable<string> scopes, RequestOptions options)
         {
-            var model = await client.ApiClient.GetTokenAsync(tokenType, token, scopes, options).ConfigureAwait(false);
+            var model = await client.ApiClient.GetTokenAsync(tokenType, token, redirectUrl, scopes, options).ConfigureAwait(false);
             return RestToken.Create(client, model);
         }
 

src/Discord.Net.Rest/DiscordRestApiClient.cs

@@ -318,7 +318,7 @@ namespace Discord.API
         /// <param name="scopes">The scopes requested.</param>
         /// <param name="options"></param>
         /// <returns>Returns <see cref="Token"/> with the information about the retrieved token.</returns>
-        public async Task<Token> GetTokenAsync(TokenType tokenType, string token, IEnumerable<string> scopes, RequestOptions options = null)
+        public async Task<Token> GetTokenAsync(TokenType tokenType, string token, string redirectUrl, IEnumerable<string> scopes, RequestOptions options = null)
         {
             Preconditions.NotNull(token, nameof(token));
             options = RequestOptions.CreateOrClone(options);
@@ -335,6 +335,7 @@ namespace Discord.API
                 new KeyValuePair<string, string>("client_secret", ClientSecret),
                 new KeyValuePair<string, string>("grant_type", "authorization_code"),
                 new KeyValuePair<string, string>("code", token),
+                new KeyValuePair<string, string>("redirect_uri", redirectUrl),
                 new KeyValuePair<string, string>("scope", string.Join(" ", scopes))
                 };
 
@@ -350,6 +351,7 @@ namespace Discord.API
                 new KeyValuePair<string, string>("client_secret", ClientSecret),
                 new KeyValuePair<string, string>("grant_type", "refresh_token"),
                 new KeyValuePair<string, string>("refresh_token", token),
+                new KeyValuePair<string, string>("redirect_uri", redirectUrl),
                 new KeyValuePair<string, string>("scope", string.Join(" ", scopes))
                 };
 

src/Discord.Net.Rest/DiscordRestClient.cs

@@ -62,9 +62,9 @@ namespace Discord.Rest
         {
             return _applicationInfo ?? (_applicationInfo = await ClientHelper.GetApplicationInfoAsync(this, options).ConfigureAwait(false));
         }
-        public async Task<RestToken> GetTokenAsync(TokenType tokenType, string token, IEnumerable<string> scopes, RequestOptions options = null)
+        public async Task<RestToken> GetTokenAsync(TokenType tokenType, string token, string redirectUrl, IEnumerable<string> scopes, RequestOptions options = null)
         {
-            return await ClientHelper.GetTokenAsync(this, tokenType, token, scopes, options);
+            return await ClientHelper.GetTokenAsync(this, tokenType, token, redirectUrl, scopes, options);
         }
 
         public Task<RestChannel> GetChannelAsync(ulong id, RequestOptions options = null)