class Rack::Chunked
Middleware that applies chunked transfer encoding to response bodies when the response does not include a Content-Length header.
Public Class Methods
new(app)
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# File lib/rack/chunked.rb, line 57 def initialize(app) @app = app end
Public Instance Methods
call(env)
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# File lib/rack/chunked.rb, line 72 def call(env) status, headers, body = @app.call(env) headers = HeaderHash.new(headers) if ! chunkable_version?(env[SERVER_PROTOCOL]) || STATUS_WITH_NO_ENTITY_BODY.key?(status.to_i) || headers[CONTENT_LENGTH] || headers[TRANSFER_ENCODING] [status, headers, body] else headers.delete(CONTENT_LENGTH) headers[TRANSFER_ENCODING] = 'chunked' if headers['Trailer'] [status, headers, TrailerBody.new(body)] else [status, headers, Body.new(body)] end end end
chunkable_version?(ver)
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pre-HTTP/1.0 (informally “HTTP/0.9”) HTTP requests did not have a version (nor response headers)
# File lib/rack/chunked.rb, line 63 def chunkable_version?(ver) case ver when 'HTTP/1.0', nil, 'HTTP/0.9' false else true end end