Create POST request and GET content from Expert Query via Expert Query web services (internal function)

EQ_PostAndContent(headers, body.list, extract, max_retries = 3)

• headers:

  Character string. Header for POST request created in EQ_CreateHeader.

• body.list:

  List of character strings for count and query POSTs created in EQ_CreateBody.

• extract:

  Character string. The Expert Query Data profile type.

• max_retries:

  Integer. The number of retry attempts.

A data frame of the query result or a printed message if the query rows exceed one million.