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Recaptcha Error Message Asp.net

API KeyVersion 1.0 (old)IntroductionCustomizationTips and GuidelinesTroubleshootingPHP PluginASP.NET PluginClassic ASP PluginJava/JSP PluginPerl PluginMediaWiki PluginphpBB PluginFormMail PluginOther Platforms Plugin Version 2.0 (new)IntroductionGet StartedDisplay the WidgetLanguage CodesVerify the User’s ResponseDomain Name ValidationSecure Token (deprecated)Create an API KeyVersion 1.0 (old)IntroductionCustomizationTips and GuidelinesTroubleshootingPHP PluginASP.NET PluginClassic ASP PluginJava/JSP PluginPerl PluginMediaWiki PluginphpBB PluginFormMail PluginOther Platforms Plugin Products reCAPTCHA Guides Troubleshooting Important: Version 1.0 of the reCAPTCHA API is no longer supported, please upgrade to Version 2.0. Learn more I Can't Work Out Where to Add reCAPTCHA It's Not Working! Help! reCAPTCHA is Accepting Incorrect Words No, I Mean *Totally* Incorrect Words My Users Are Starting To Get One Word Captchas I Can't Work Out Where to Add reCAPTCHA This advice applies to everyone who's integrating reCAPTCHA -- irrespective of language. Firstly you need to identify two hot spots in your code. These are the places where you'll be adding the reCAPTCHA calls. Display reCAPTCHA: The first hot spot is the code that generates the form. Hopefully that's easy enough to find (by looking for a

tag in your html) and you have been able to display the CAPTCHA on your form. Check reCAPTCHA: The second hot spot is the one that seems to cause people problems. You need to identify the code that handles form submission -- that is the code that runs when the user clicks on submit. It's hard to generalize about what this code looks like but here are some clues that may help you: if your form can ever display an error message, for example if a required field is blank, look for the code that generates that error message. if your form places information in a database look for code that does a SQL INSERT. if your form sends mail, search for the code that does that. Form Already Has Validation Life will be easier if your form already has some validation logic (i.e. it handles invalid input from the user by displaying a messag

API KeyVersion 1.0 (old)IntroductionCustomizationTips and GuidelinesTroubleshootingPHP PluginASP.NET PluginClassic ASP PluginJava/JSP PluginPerl PluginMediaWiki PluginphpBB PluginFormMail PluginOther Platforms Plugin Version 2.0 (new)IntroductionGet StartedDisplay the WidgetLanguage CodesVerify the User’s ResponseDomain Name ValidationSecure Token (deprecated)Create an API KeyVersion 1.0 (old)IntroductionCustomizationTips and GuidelinesTroubleshootingPHP PluginASP.NET PluginClassic ASP PluginJava/JSP PluginPerl PluginMediaWiki PluginphpBB PluginFormMail PluginOther Platforms Plugin Products reCAPTCHA Guides Verifying the user's response This page explains how to verify a user's response to a reCAPTCHA challenge from your application's backend. When a reCAPTCHA is solved by end user, a new field https://developers.google.com/recaptcha/old/docs/troubleshooting (g-recaptcha-response) will be populated in HTML. You can get the user’s response in one of three ways: g-recaptcha-response POST parameter when the user submits the form on your site grecaptcha.getResponse(opt_widget_id) after the user completes the CAPTCHA challenge As a string argument to your callback function if data-callback is specified in either the g-recaptcha tag attribute https://developers.google.com/recaptcha/docs/verify or the callback parameter in the grecaptcha.render method Each reCAPTCHA response is a token that should be used only once. If a verification attempt has been made with a particular token, it cannot be used again. You will need to call grecaptcha.reset() to ask the end user to verify with reCAPTCHA again. After you get the response token, you need to verify it with reCAPTCHA using the following API to ensure the token is valid. API Request URL: https://www.google.com/recaptcha/api/siteverify METHOD: POST POST Parameter Description secret Required. The shared key between your site and reCAPTCHA. response Required. The user response token provided by reCAPTCHA, verifying the user on your site. remoteip Optional. The user's IP address. API Response The response is a JSON object: { "success": true|false, "challenge_ts": timestamp, // timestamp of the challenge load (ISO format yyyy-MM-dd'T'HH:mm:ssZZ) "hostname": string, // the hostname of the site where the reCAPTCHA was solved "error-codes": [...] // optional } Error code reference Error code Description missing-input-secret The secret parameter is mis

ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/Security/ASP.NET Login Control with reCAPTCHA ASP.NET Login Control with reCAPTCHA [Answered]RSS 6 replies Last post Jul 26, 2012 07:07 PM by jprochazka ‹ Previous http://forums.asp.net/t/1828120.aspx?ASP+NET+Login+Control+with+reCAPTCHA Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Related Links GuidanceSamples Reply aurora_borea... None 0 Points 3 Posts ASP.NET Login Control with reCAPTCHA Jul 26, 2012 03:59 PM|aurora_borealis|LINK I know that putting a captcha in a login controller and validating it before user logs in should be a trivial task but i couldn't accomplish this recaptcha error in 7 hours.I think this problem is related with asp.net more than reCAPTCHA because I'm able to validate captcha on a simple aspx page in my project, but not when it's in my login controller. I have put a reCAPTCHA in my login controller. On the OnLoggingIn event, I'm calling the function to validate reCAPTCHA. ... and this is my recaptcha error message codebehind function to validate captcha: protected void checkCaptcha(object sender, LoginCancelEventArgs e) { Recaptcha.RecaptchaControl captcha = (Recaptcha.RecaptchaControl)LoginUser.FindControl("recaptcha"); captcha.Validate(); if (!captcha.IsValid) { e.Cancel = true; } } but even if captcha text is not correct, user is able to log in. captcha.Validate() always returns true. How can I prevent user from logging in when captcha is not valid? EDIT: when I put my reCAPTCHA outside of login controller -where it should be- it works as expected. It seems the only way is placing captcha at the end of the page and positioning it throug css into login area. recaptcha login Reply jprochazka Contributor 3790 Points 821 Posts Re: ASP.NET Login Control with reCAPTCHA Jul 26, 2012 04:23 PM|jprochazka|LINK Take a look at this: https://developers.google.com/recaptcha/docs/aspnet Follow the instructions except the part where it goes into the code behind. Do not add the code behind however.When logging in Page.IsValid is checked so no need to add it. EDIT: When you add the reCAPTCHA control place it where ever you like on the page inside or outside the tags. ~/Account/Login.aspx from the Web Application template created by Visual Studio: <%@ Page Title="Log in" Language="VB" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Login.aspx.vb" Inherits="WebForms.Login" %>

 

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