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# See https://github.com/crystal-lang/crystal/issues/2963 | ||
class HTTPProxy | ||
getter proxy_host : String | ||
getter proxy_port : Int32 | ||
getter options : Hash(Symbol, String) | ||
getter tls : OpenSSL::SSL::Context::Client? | ||
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def initialize(@proxy_host, @proxy_port = 80, @options = {} of Symbol => String) | ||
end | ||
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def open(host, port, tls = nil, connection_options = {} of Symbol => Float64 | Nil) | ||
dns_timeout = connection_options.fetch(:dns_timeout, nil) | ||
connect_timeout = connection_options.fetch(:connect_timeout, nil) | ||
read_timeout = connection_options.fetch(:read_timeout, nil) | ||
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socket = TCPSocket.new @proxy_host, @proxy_port, dns_timeout, connect_timeout | ||
socket.read_timeout = read_timeout if read_timeout | ||
socket.sync = true | ||
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socket << "CONNECT #{host}:#{port} HTTP/1.1\r\n" | ||
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if options[:user]? | ||
credentials = Base64.strict_encode("#{options[:user]}:#{options[:password]}") | ||
credentials = "#{credentials}\n".gsub(/\s/, "") | ||
socket << "Proxy-Authorization: Basic #{credentials}\r\n" | ||
end | ||
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socket << "\r\n" | ||
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resp = parse_response(socket) | ||
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if resp[:code]? == 200 | ||
{% if !flag?(:without_openssl) %} | ||
if tls | ||
tls_socket = OpenSSL::SSL::Socket::Client.new(socket, context: tls, sync_close: true, hostname: host) | ||
socket = tls_socket | ||
end | ||
{% end %} | ||
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return socket | ||
else | ||
socket.close | ||
raise IO::Error.new(resp.inspect) | ||
end | ||
end | ||
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private def parse_response(socket) | ||
resp = {} of Symbol => Int32 | String | Hash(String, String) | ||
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begin | ||
version, code, reason = socket.gets.as(String).chomp.split(/ /, 3) | ||
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headers = {} of String => String | ||
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while (line = socket.gets.as(String)) && (line.chomp != "") | ||
name, value = line.split(/:/, 2) | ||
headers[name.strip] = value.strip | ||
end | ||
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resp[:version] = version | ||
resp[:code] = code.to_i | ||
resp[:reason] = reason | ||
resp[:headers] = headers | ||
rescue | ||
end | ||
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return resp | ||
end | ||
end | ||
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class HTTPClient < HTTP::Client | ||
def set_proxy(proxy : HTTPProxy) | ||
begin | ||
@socket = proxy.open(host: @host, port: @port, tls: @tls, connection_options: proxy_connection_options) | ||
rescue IO::Error | ||
@socket = nil | ||
end | ||
end | ||
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def proxy_connection_options | ||
opts = {} of Symbol => Float64 | Nil | ||
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opts[:dns_timeout] = @dns_timeout | ||
opts[:connect_timeout] = @connect_timeout | ||
opts[:read_timeout] = @read_timeout | ||
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return opts | ||
end | ||
end | ||
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def get_proxies(country_code = "US") | ||
client = HTTP::Client.new(URI.parse("http://spys.one")) | ||
client.read_timeout = 10.seconds | ||
client.connect_timeout = 10.seconds | ||
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headers = HTTP::Headers.new | ||
headers["User-Agent"] = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" | ||
headers["Accept"] = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8" | ||
headers["Accept-Language"] = "Accept-Language: en-US,en;q=0.9" | ||
headers["Host"] = "spys.one" | ||
headers["Content-Type"] = "application/x-www-form-urlencoded" | ||
body = { | ||
"xpp" => "2", | ||
"xf1" => "0", | ||
"xf2" => "2", | ||
"xf4" => "1", | ||
"xf5" => "1", | ||
} | ||
response = client.post("/free-proxy-list/#{country_code}/", headers, form: body) | ||
response = XML.parse_html(response.body) | ||
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proxies = [] of {ip: String, port: Int32, score: Float64} | ||
response = response.xpath_nodes(%q(//table))[1] | ||
response.xpath_nodes(%q(.//tr)).each do |node| | ||
if !node["onmouseover"]? | ||
next | ||
end | ||
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ip = node.xpath_node(%q(.//td[1]/font[2])).to_s.match(/<font class="spy14">(?<address>[^<]+)</).not_nil!["address"] | ||
port = 3128 | ||
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latency = node.xpath_node(%q(.//td[6])).not_nil!.content.to_f | ||
speed = node.xpath_node(%q(.//td[7]/font/table)).not_nil!["width"].to_f | ||
uptime = node.xpath_node(%q(.//td[8]/font/acronym)).not_nil! | ||
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# Skip proxies that are down | ||
if uptime["title"].ends_with? "?" | ||
next | ||
end | ||
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if md = uptime.content.match(/^\d+/) | ||
uptime = md[0].to_f | ||
else | ||
next | ||
end | ||
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score = (uptime*4 + speed*2 + latency)/7 | ||
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proxies << {ip: ip, port: port, score: score} | ||
end | ||
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return proxies | ||
end |
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