Forum Discussion
Need Cookie in my Rest API Custom data connector - Help please.
// This file contains your Data Connector logic
section SynDNA;
[DataSource.Kind="SynDNA", Publish="SynDNA.Publish"]
shared SynDNA.Feed = Value.ReplaceType(SynDNAImpl, type function (url as Uri.Type) as any);
SynDNAImpl = (url as text) =>
let
Credential = Extension.CurrentCredential(),
CredentialConnectionString = [ UID = Credential[Username], PWD = Credential[Password] ],
login = Record.ToTable(Json.Document(Web.Contents(url & "/api/login/" & CredentialConnectionString[UID] & "/" & CredentialConnectionString[PWD], [ Headers = DefaultRequestHeaders ]))),
FilterLogin = Table.SelectRows(login, each _[Name] = "hash" ),
hash = List.First(Table.Column(FilterLogin, "Value")),
//source = Web.Contents(url & "/api/report/1/output/Reports/Angus/test_test?auth=" & hash, [ Headers = DefaultRequestHeaders ]),
source = Web.Contents(url & "/api/reports/search?auth=" & hash & "&keyword=EXCEL", [ Headers = DefaultRequestHeaders ]),
json = Json.Document(source)
in json;
DefaultRequestHeaders = [
#"Cookie" = "userkey=1/2321bf021c4a45f23037826cd49fa5d8b619fd6d/8c836beea0263a6f95b59c3e2d6e44ccd741ce50",
#"Accept" = "application/json;odata.metadata=minimal", // column name and values only
#"OData-MaxVersion" = "4.0" // we only support v4
];
// Data Source Kind description
SynDNA = [
Authentication = [
// Key = [],
UsernamePassword = []
// Windows = [],
// Implicit = [],
// Anonymous = []
],
Label = Extension.LoadString("DataSourceLabel")
];I need a way to generate a cookie to pass to my API. In the code above has a key borrowed from making my request in Chrome. This request works in any browser and curl. But in Visual Studio it doesn't add the Cookie as part of a default request header. If I manually add the cookie from a browser request (like I have above the request works) if not I get a 403 error. Help please.
12 Replies
You might want to use fiddler to inspect the HTTP requests and from there obtain the correct address where you receive the Cookie value.
In one of my custom connectors, I get my cookie value with the following:
let
Source = Web.Contents(Uri.Combine(url, "authentication-point/authenticate"), [ Headers = DefaultRequestHeaders ]),
Source_Headers = Value.Metadata(Source)[Headers],
Auth_Cookie_Header = Source_Headers[#"Set-Cookie"],Web API returns the headers and I retrieve them using Value.Metadata(). The cookie value I need is under the [#"Set-Cookie"].
Can you explain this a little more? I'm struggling with this and I don't know if I need to build a custom connector (which I have no clue how to do). I have a login api that is using username and password as post method. Then I am to use the sessionid (#"Set-Cookie) created from that login api and pass that through the data api.
Same problem with the onpremise Conector via Logic App Custom Connector. Its not possible to pass the cookie Header Paramter to the api.
#NoCookieParameterPassThroughAtCustomConnector
cookie never arrives at the api...
Did any of you get through the cookies process? I'm having a hard time working with cookies in power query. There is no information online about it and no doc that can be referred to, making it even more difficult. I see one more post where it was mentioned that the cookies were not allowed due to security reasons in past:
https://community.powerbi.com/t5/Developer/How-to-get-set-Cookies-inside-a-visual/m-p/347843
