partner.soap.sforce.com Http POST request

Question

What is the endpoint to POST

<env:Envelope
xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> some content </env:Envelope>

Answer 1

You don't send the SOAP POST requests to any of those URLs. They are XML namespaces - see Why are URLs in XML namespaces?.

For the initial login() call you should use the endpoints defined in the docs:

"https://login.salesforce.com/services/Soap/u/version/"

E.g. You need to replace "version" with the actual API version. https://login.salesforce.com/services/Soap/u/49.0. You will typically see this endpoint address in the <soap:address location> at the end of the WSDL.

The LoginResult that gets returned from the login() API call will include a serverURL. All subsequent API requests need to go to that URL and include the sessionId in the header.