Could you please share the codes or framework
you are using for your project?
That way, we could directly provide you with a solution of codes.
Generally speaking, you could always get the HTTP referer, which means:
An optional HTTP header field that identifies the address of the webpage (i.e., the URI or IRI)
which is linked to the resource being requested. By checking the referrer, the new webpage can see where the request originated.
In C#, there is an option to fetch that value through below codes
which should be working in both ASP.NET and ASP.NET Core.
Then, you could go back to previous page using Redirect method. For example, in ASP.NET Core MVC,
return Redirect(previousURL);
Hope this can help you.
Best regards,
Sean
.NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.
Could you please share the codes or framework you are using for your project?
What I Want to achieve with this, is to initialize payment on a payment processor with below code, then after the payment is made, it will return to the Callback Url were I will use the returned
reference to verify the payment.
But I will like the callback url page (https://MySite.com/Page2) to maintain the Login status of
https://MySite.com/Page1 so that I can continue the have access to the
User Id
1)Initialization code on ~/Page1
var client = new RestClient("https://api.paymentSite.co/transaction/initialize");
var keyValues = new Dictionary<string, string>
{
{ "email", "email@mail.com"},
{ "amount", "5000"},
{ "reference", "Q76y6655"},
{ "callback_url","https://MySite.com/Page2"},
};
//serialization using Newtonsoft JSON
string JsonBody = JsonConvert.SerializeObject(keyValues);
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer SecretKey");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", JsonBody, ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
2) The Verification code on ~/Page2
var client = new RestClient("https://api.paymentSite.co/transaction/verify/reference={Returned Reference}");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer SecretKey");
IRestResponse response = client.Execute(request);
What do you mean "callback_url" here for the payment processor?
I don't think you need to worry about maintain the login status for the current user as long as you have implement a mechanism to store the identity for users.
You use RestClient for the payment and will get the response after the api finished the initialization.
During that process, from my understanding, the "callback_url" is only used for the condition that
the payment processor will call the Page2,
like call an api to visit your project and provide some information so that you could continue payment process from the server side. The payment processor should not have the user id. (except that you provide it with this information).
It won't be used as the referer page.
For user, only if the browser redirect to another website, the "callback_url" will have chance to act like a redirect target after processing the payment. The user will go back to your website, say Page2. At that time, the user ID could be tracked with your
identity system (from session or cookies).
Best regards,
Sean
.NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.
I don't think you need to worry about maintain the login status for the current user as long as you have implement a mechanism to store the identity for users.
You use RestClient for the payment and will get the response after the api finished the initialization.
During that process, from my understanding, the "callback_url" is only used for the condition that
the payment processor will call the Page2,
like call an api to visit your project and provide some information so that you could continue payment process from the server side. The payment processor should not have the user id. (except that you provide it with this information).
It won't be used as the referer page.
For user, only if the browser redirect to another website, the "callback_url" will have chance to act like a redirect target after processing the payment. The user will go back to your website, say Page2. At that time, the user ID could be tracked with your
identity system (from session or cookies).
The issue is that when the payment processor will call the
Page2, like call an api to visit your project,
it comes with some information, but when I tried to use the provided information to continue payment process from my server side, I get error message that says object reference not set to an instance of an object.
Below is my code in the Page2 code behind.
protected void Page_Load(object sender, EventArgs e)
{
var trackerRefX = Request.QueryString["reference"].ToString();
if (!string.IsNullOrEmpty(trackerRefX))
{
Session["Reference"] = trackerRefX;
}
}
protected void btPageVerify_Click(object sender, EventArgs e)
{
string Reference = Session["Reference"].ToString();
string Id = Session["UserId"].ToString();
string VerificationUrl = "https://paymentSite.com/transaction/verify/"+Reference;
var client = new RestClient(VerificationUrl);
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer mySecretKey");
IRestResponse response = client.Execute(request);
string data = response.Content;
string dataT = data.Replace("", string.Empty);
dynamic stuff = JObject.Parse(dataT);
dynamic ResponseX = stuff.data; // Breaking down the Responce
string received_status = ResponseX.status;
Payment gateways have documentation that explains how to use their services. I recommend contacting the service if you are having trouble.
Typically, a callback from a payment gateway is to a specific URL in your application. The URL can be from configuration, state passed to the gateway, or REST where the URL is in the location header. It is not clear why you do not know the URL
Member
53 Points
203 Posts
Get the current page after a call back function
Sep 13, 2020 10:08 PM|Enzyme|LINK
I would like to be able to get back to the URL of the page that I am crawling when the callback function is called.
Please any help with example?
I am using C#.
Contributor
2900 Points
855 Posts
Re: Get the current page after a call back function
Sep 14, 2020 01:58 AM|Sean Fang|LINK
Hi Enzyme,
Could you please share the codes or framework you are using for your project?
That way, we could directly provide you with a solution of codes.
Generally speaking, you could always get the HTTP referer, which means:
An optional HTTP header field that identifies the address of the webpage (i.e., the URI or IRI) which is linked to the resource being requested. By checking the referrer, the new webpage can see where the request originated.
In C#, there is an option to fetch that value through below codes
which should be working in both ASP.NET and ASP.NET Core.
Then, you could go back to previous page using Redirect method. For example, in ASP.NET Core MVC,
Hope this can help you.
Best regards,
Sean
Member
53 Points
203 Posts
Re: Get the current page after a call back function
Sep 14, 2020 03:01 AM|Enzyme|LINK
What I Want to achieve with this, is to initialize payment on a payment processor with below code, then after the payment is made, it will return to the Callback Url were I will use the returned reference to verify the payment.
But I will like the callback url page (https://MySite.com/Page2) to maintain the Login status of https://MySite.com/Page1 so that I can continue the have access to the User Id
1) Initialization code on ~/Page1
var client = new RestClient("https://api.paymentSite.co/transaction/initialize"); var keyValues = new Dictionary<string, string> { { "email", "email@mail.com"}, { "amount", "5000"}, { "reference", "Q76y6655"}, { "callback_url","https://MySite.com/Page2"}, }; //serialization using Newtonsoft JSON string JsonBody = JsonConvert.SerializeObject(keyValues); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer SecretKey"); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", JsonBody, ParameterType.RequestBody); IRestResponse response = client.Execute(request);2) The Verification code on ~/Page2
var client = new RestClient("https://api.paymentSite.co/transaction/verify/reference={Returned Reference}"); var request = new RestRequest(Method.GET); request.AddHeader("Authorization", "Bearer SecretKey"); IRestResponse response = client.Execute(request);Contributor
2900 Points
855 Posts
Re: Get the current page after a call back function
Sep 14, 2020 09:32 AM|Sean Fang|LINK
Hi Enzyme,
What do you mean "callback_url" here for the payment processor?
I don't think you need to worry about maintain the login status for the current user as long as you have implement a mechanism to store the identity for users.
You use RestClient for the payment and will get the response after the api finished the initialization.
During that process, from my understanding, the "callback_url" is only used for the condition that
It won't be used as the referer page.
For user, only if the browser redirect to another website, the "callback_url" will have chance to act like a redirect target after processing the payment. The user will go back to your website, say Page2. At that time, the user ID could be tracked with your identity system (from session or cookies).
Best regards,
Sean
Member
53 Points
203 Posts
Re: Get the current page after a call back function
Sep 18, 2020 12:17 PM|Enzyme|LINK
The issue is that when the payment processor will call the Page2, like call an api to visit your project, it comes with some information, but when I tried to use the provided information to continue payment process from my server side, I get error message that says
object reference not set to an instance of an object.
Below is my code in the Page2 code behind.
protected void Page_Load(object sender, EventArgs e) { var trackerRefX = Request.QueryString["reference"].ToString(); if (!string.IsNullOrEmpty(trackerRefX)) { Session["Reference"] = trackerRefX; } } protected void btPageVerify_Click(object sender, EventArgs e) { string Reference = Session["Reference"].ToString(); string Id = Session["UserId"].ToString(); string VerificationUrl = "https://paymentSite.com/transaction/verify/"+Reference; var client = new RestClient(VerificationUrl); var request = new RestRequest(Method.GET); request.AddHeader("Authorization", "Bearer mySecretKey"); IRestResponse response = client.Execute(request); string data = response.Content; string dataT = data.Replace("", string.Empty); dynamic stuff = JObject.Parse(dataT); dynamic ResponseX = stuff.data; // Breaking down the Responce string received_status = ResponseX.status;All-Star
53121 Points
23675 Posts
Re: Get the current page after a call back function
Sep 18, 2020 12:34 PM|mgebhard|LINK
Payment gateways have documentation that explains how to use their services. I recommend contacting the service if you are having trouble.
Typically, a callback from a payment gateway is to a specific URL in your application. The URL can be from configuration, state passed to the gateway, or REST where the URL is in the location header. It is not clear why you do not know the URL