Sets hdrs's "Expect" header according to expectations.
Currently soup.types.Expectation.Continue is the only known expectation
value. You should set this value on a request if you are sending a
large message body (eg, via POST or PUT), and want to give the
server a chance to reject the request after seeing just the headers
(eg, because it will require authentication before allowing you to
post, or because you're POSTing to a URL that doesn't exist). This
saves you from having to transmit the large request body when the
server is just going to ignore it anyway.
Sets hdrs's "Expect" header according to expectations.
Currently soup.types.Expectation.Continue is the only known expectation value. You should set this value on a request if you are sending a large message body (eg, via POST or PUT), and want to give the server a chance to reject the request after seeing just the headers (eg, because it will require authentication before allowing you to post, or because you're POSTing to a URL that doesn't exist). This saves you from having to transmit the large request body when the server is just going to ignore it anyway.