Step 9: Submit SAML sign-on request
POST {{authPath}}/{{envID}}/saml20/idp/sso
The POST /{{envID}}/saml20/idp/sso operation starts the sign-on flow. The request requires the application/x-www-form-urlencoded custom content type in the Content-Type HTTP header to initate the set password operation.
The request body includes the SAMLRequest parameter to pass in the encoded SAML authentication request information. Here is a sample SAML <AuthnRequest> in plain text:
<samlp:AuthnRequest
xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
ID="identifier_1"
Version="2.0"
IssueInstant="2004-12-05T09:21:59">
<saml:Issuer>https://sp.example.com/SAML2</saml:Issuer>
</samlp:AuthnRequest>
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If you use the Postman collection, this request includes a Postman pre-req script that creates and encodes the |
The request body includes the RelayState property that specifies the token for SAML assertions used in IdP-initiated SSO.
The response contains the Location header. This includes the flowId value that you’ll need for the next step.
Example Request
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cURL
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C#
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Go
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HTTP
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Java
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jQuery
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NodeJS
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Python
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PHP
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Ruby
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Swift
curl --location --globoff '{{authPath}}/{{envID}}/saml20/idp/sso' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'SAMLRequest={{SAMLRequest}}' \
--data-urlencode 'RelayState=token'
var options = new RestClientOptions("{{authPath}}/{{envID}}/saml20/idp/sso")
{
MaxTimeout = -1,
};
var client = new RestClient(options);
var request = new RestRequest("", Method.Post);
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddParameter("SAMLRequest", "{{SAMLRequest}}");
request.AddParameter("RelayState", "token");
RestResponse response = await client.ExecuteAsync(request);
Console.WriteLine(response.Content);
package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "{{authPath}}/{{envID}}/saml20/idp/sso"
method := "POST"
payload := strings.NewReader("SAMLRequest=%7B%7BSAMLRequest%7D%7D&RelayState=token")
client := &http.Client {
}
req, err := http.NewRequest(method, url, payload)
if err != nil {
fmt.Println(err)
return
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err := client.Do(req)
if err != nil {
fmt.Println(err)
return
}
defer res.Body.Close()
body, err := io.ReadAll(res.Body)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(body))
}
POST /{{envID}}/saml20/idp/sso HTTP/1.1
Host: {{authPath}}
Content-Type: application/x-www-form-urlencoded
SAMLRequest=%7B%7BSAMLRequest%7D%7D&RelayState=token
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "SAMLRequest={{SAMLRequest}}&RelayState=token");
Request request = new Request.Builder()
.url("{{authPath}}/{{envID}}/saml20/idp/sso")
.method("POST", body)
.addHeader("Content-Type", "application/x-www-form-urlencoded")
.build();
Response response = client.newCall(request).execute();
var settings = {
"url": "{{authPath}}/{{envID}}/saml20/idp/sso",
"method": "POST",
"timeout": 0,
"headers": {
"Content-Type": "application/x-www-form-urlencoded"
},
"data": {
"SAMLRequest": "{{SAMLRequest}}",
"RelayState": "token"
}
};
$.ajax(settings).done(function (response) {
console.log(response);
});
var request = require('request');
var options = {
'method': 'POST',
'url': '{{authPath}}/{{envID}}/saml20/idp/sso',
'headers': {
'Content-Type': 'application/x-www-form-urlencoded'
},
form: {
'SAMLRequest': '{{SAMLRequest}}',
'RelayState': 'token'
}
};
request(options, function (error, response) {
if (error) throw new Error(error);
console.log(response.body);
});
import requests
url = "{{authPath}}/{{envID}}/saml20/idp/sso"
payload = 'SAMLRequest=%7B%7BSAMLRequest%7D%7D&RelayState=token'
headers = {
'Content-Type': 'application/x-www-form-urlencoded'
}
response = requests.request("POST", url, headers=headers, data=payload)
print(response.text)
<?php
require_once 'HTTP/Request2.php';
$request = new HTTP_Request2();
$request->setUrl('{{authPath}}/{{envID}}/saml20/idp/sso');
$request->setMethod(HTTP_Request2::METHOD_POST);
$request->setConfig(array(
'follow_redirects' => TRUE
));
$request->setHeader(array(
'Content-Type' => 'application/x-www-form-urlencoded'
));
$request->addPostParameter(array(
'SAMLRequest' => '{{SAMLRequest}}',
'RelayState' => 'token'
));
try {
$response = $request->send();
if ($response->getStatus() == 200) {
echo $response->getBody();
}
else {
echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
$response->getReasonPhrase();
}
}
catch(HTTP_Request2_Exception $e) {
echo 'Error: ' . $e->getMessage();
}
require "uri"
require "net/http"
url = URI("{{authPath}}/{{envID}}/saml20/idp/sso")
http = Net::HTTP.new(url.host, url.port);
request = Net::HTTP::Post.new(url)
request["Content-Type"] = "application/x-www-form-urlencoded"
request.body = "SAMLRequest=%7B%7BSAMLRequest%7D%7D&RelayState=token"
response = http.request(request)
puts response.read_body
let parameters = "SAMLRequest=%7B%7BSAMLRequest%7D%7D&RelayState=token"
let postData = parameters.data(using: .utf8)
var request = URLRequest(url: URL(string: "{{authPath}}/{{envID}}/saml20/idp/sso")!,timeoutInterval: Double.infinity)
request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
request.httpBody = postData
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
print(String(describing: error))
return
}
print(String(data: data, encoding: .utf8)!)
}
task.resume()