Sharepoint 2013 getlist API的403禁止错误

Question

I am using following post request to get values from sharepoint 2013 url: http://abc.xxxxxx.com/_vti_bin/lists.asmx

Headers: Content-Type:[text/xml; charset=utf-8]
         SOAPAction: [http://schemas.microsoft.com/sharepoint/soap/GetList]
         Host:     abc.xxxxxx.com

now if try using postman api I get success response, but if I use golang API to send same request gives me "403 Forbidden": "403 FORBIDDEN". Not sure why this is happening

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