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Hello,
I am in the process of building an API for Ebay interfaces. I need to send some client credentials in the "body":
grant_type=client_credentials&scope=api.ebay.com/.../api_scope
I use the class System.Net.HttpWebRequest.
However, I don't know how to post something in the body. Can anyone here possibly help me how I could simply implement it?
I have attached a code snippet:
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Reportprivate str sExecuteRequest(str _sSubURL, str _sRESTMethod, System.Net.WebHeaderCollection _oHeader)
{
str sResponse;
System.Net.HttpWebRequest oRequest;
System.Net.HttpWebResponse oResponse;
System.Net.
// System.Net.NetworkCredential oCredentials;
System.IO.StreamReader oReader;
System.IO.Stream oDataStream;
CLRObject oClrObj;
;
oClrObj = System.Net.WebRequest::Create(_sSubURL);
oRequest = oClrObj;
//Create Header
oRequest.set_Method(_sRESTMethod);
oRequest.set_Headers(_oHeader);
oRequest.set_ContentType(#HeaderContentType);
oRequest.set_Accept(#HeaderContentAccept);
// "grant_type", "client_credentials&scope=https://api.ebay.com/oauth/api_scope"
oResponse = oRequest.GetResponse();
oDataStream = oResponse.GetResponseStream();
oReader = new System.IO.StreamReader(oDataStream);
sResponse = oReader.ReadToEnd();
oReader.Close();
oDataStream.Close();
oResponse.Close();
return sResponse;
}
I get the error message above the tool Fiddler:
{"error":"unsupported_grant_type","error_description":"grant type in request is not supported by the authorization server"}
Thank you in advance.
Exactly. First, i need for a authorisation token, which I use for an access token.
According to Ebay customer service:
"I checked the logs and provided request body details and I found grant_type & scope list value is not correct.
Please specify grant_type and scope correctly.
Ex. grant_type=client_credentials&scope=api.ebay.com/.../api_scope
Best Regards,
eBay Developer Support"
... The grant type and scope should look like this. I have now adjusted the code and according to the tool Fiddler, an http message: 200 (OK) comes back. However, I noticed in the debugger, that the execute "oResponse = oRequest.GetResponse();" the AX hangs on.
If I lower the "Timeout", then the connection breaks prematurely.
[About the "exception": This method is called by another method and is in a "try/catch clause".
I have attached the revised code:
All responses (
Answers (
private str sExecuteRequest(str _sSubURL, str _sRESTMethod, System.Net.WebHeaderCollection _oHeader)
{
str sResponse;
str sBody = "grant_type=client_credentials&scope=https://api.ebay.com/oauth/api_scope";
System.Net.HttpWebRequest oRequest;
System.Net.HttpWebResponse oResponse;
System.Net.HttpWebResponse oResponseM;
System.IO.StreamReader oReader;
System.IO.Stream oDataStream, ORequestStream;
System.Exception oError;
System.Text.Encoding utf8;
System.Byte[] byteArray;
CLRObject oClrObj;
;
//Create Web-Object
System.Net.ServicePointManager::set_SecurityProtocol(System.Net.SecurityProtocolType::Ssl3);
oClrObj = System.Net.WebRequest::Create(_sSubURL);
oRequest = oClrObj;
//Create Header
oRequest.set_Method(_sRESTMethod);
oRequest.set_KeepAlive(false);
oRequest.set_Headers(_oHeader);
oRequest.set_ContentType(#HeaderContentType);
oRequest.set_Accept(#HeaderContentAccept);
oRequest.set_Timeout(10000);
utf8 = System.Text.Encoding::get_UTF8();
byteArray = utf8.GetBytes(sBody);
ORequestStream = oRequest.GetRequestStream();
ORequestStream.Write(byteArray, 0, byteArray.get_Length());
//Execute Request and Response
oResponse = oRequest.GetResponse();
oDataStream = oResponse.GetResponseStream();
oReader = new System.IO.StreamReader(oDataStream);
sResponse = oReader.ReadToEnd();
oReader.Close();
oDataStream.Close();
oResponse.Close();
CodeAccessPermission::revertAssert();
return sResponse;
}
It seems that you're trying to get an authentication token and the body should look like this (not like what you have in your comment):
{
"grant_type" : "client_credentials",
"scope" : "https://api.ebay.com/oauth/api_scope"
}
But you don't seem to be setting any body at all. Use oRequest.GetRequestStream() to get a stream and write the data there, before calling GetResponse().
By the way, you're calling Close() on resource if everything ends successfully, but you won't close them if an exception occurs.
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