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Response Handling
David Cook edited this page Sep 20, 2022
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When we make an HTTP request, we obtain an HTTP::Response object:
>> response = HTTP.get('https://www.google.com')
=> #<HTTP/1.0 200 OK @headers={"Content-Type"=>"text/html; charset=UTF-8", "Date"=>"Fri, ...>There are several methods of interest we can call on the response (see also the YARD documentation):
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#body: (returns
HTTP::Response::Body) an object representing the body. Can be used for streaming -
#code: (returns
Fixnum) the HTTP status code of the response -
#status: (returns
HTTP::Response::Status) an object representing the status of the response -
#content_type: (returns
HTTP::ContentType) the content type of the response -
#cookies: (returns
HTTP::CookieJar) a cookie jar containing all of the response cookies for a request -
#flush: (returns
self) reads and discards the response body. Useful for persistent connections -
#parse: (return value depends on MIME type) parse the body using a parser defined for the
#content_type -
#to_s: (returns
String) quickly obtain the response body as a string
We can read the response body into a string by calling #to_s:
>> response.body.to_s
=> "<!doctype html>..."We can also stream it with #each:
>> response.body.each { |chunk| ... }or with #readpartial:
>> response.body.readpartial
=> "...first chunk..."
>> response.body.readpartial
=> "...next chunk..."response.status.informational? # 1xx
response.status.success? # 2XX
response.status.redirect? # 3xx
response.status.client_error? # 4XX
response.status.server_error? # 5XXresponse.status #=> eg 500
response.status.reason #=> eg "Internal Server Error"
response.status.to_s #=> eg "500 Internal Server Error"