我正在尝试使用Sinatra的twitter流API,并在搜索关键字时为用户提供实时更新。
require 'sinatra'
require 'eventmachine'
require 'em-http'
require 'json'
STREAMING_URL = 'https://stream.twitter.com/1/statuses/sample.json'
get '/' do
stream(:keep_open) do |out|
http = EM::HttpRequest.new(STREAMING_URL).get :head => { 'Authorization' => [ 'USERNAME', 'PASS' ] }
buffer = ""
http.stream do |chunk|
puts "still chugging"
buffer += chunk
while line = buffer.slice!(/.+\r?\n/)
tweet = JSON.parse(line)
unless tweet.length == 0 or tweet['user'].nil?
out << "<p><b>#{tweet['user']['screen_name']}</b>: #{tweet['text']}</p>"
end
end
end
end
end
如果用户关闭连接,我希望停止处理em-http-request流。有谁知道怎么做?
答案 0 :(得分:5)
Eric的答案很接近,但它的作用是在你的Twitter流关闭后关闭响应主体(不是客户端连接,顺便说一句),这通常不会发生。这应该有效:
require 'sinatra/streaming' # gem install sinatra-contrib
# ...
get '/' do
stream(:keep_open) do |out|
# ...
out.callback { http.conn.close_connection }
out.errback { http.conn.close_connection }
end
end
答案 1 :(得分:0)
我对Sinatra流API还不太熟悉,但你试过这个吗?
http.callback { out.close }