Luasocket custom headers, 404 turns to 301

问题

My previous question was about fetching page title in lua using the socket.http module. The question lies here. Previously, youtube pages led me to a 404 error page. Based on MattJ's help, I put up custom HOST header for the request. This is what I did and what was the result:

Code

header = { host= "youtube.com" }
local result,b,c,h = http.request{ url = "http://www.youtube.com/watch?v=_eT40eV7OiI", headers = header }
print ( result, b, c, h )
for k,v in pairs(c) do print(k,v) end

Result

1   301 table: 0047D430 HTTP/1.1 301 Moved Permanently
x-content-type-options  nosniff
content-length  0
expires Tue, 27 Apr 1971 19:44:06 EST
cache-control   no-cache
connection  close
location    http://www.youtube.com/watch?v=_eT40eV7OiI
content-type    text/html; charset=utf-8
date    Sat, 28 Apr 2012 04:26:21 GMT
server  wiseguy/0.6.11

As far as I was able to understand from this, the error is basically because of X-Content-Type-Options valued nosniff. Reading its documentation, I got to know that the only defined value, "nosniff", prevents Internet Explorer from MIME-sniffing a response away from the declared content-type.

Please help me so that I can use custom proxy and fetch the youtube(and some other sites, as mentioned in the previous question) title from their body. Here is the complete LUA file I currently have:

local http = require "socket.http"
http.PROXY="http://<proxy address here>:8080"
header = { host= "youtube.com" }
local result,b,c,h = http.request{ url = "http://www.youtube.com/watch?v=_eT40eV7OiI", headers = header }
print ( result, b, c, h )
for k,v in pairs(c) do print(k,v) end

回答1:

I believe this line should be changed:

 header = { host= "youtube.com" }

To:

 header = { host= "www.youtube.com" }

After that, works for me.

回答2:

The solution is to install luasec and to use ssl.https module to do the request.

Answered here by Paul Kulchenko!

Example:

-- luasec version 0.4.2
require("ssl")
require("https")
-- ssl.https.request(...)

来源：https://stackoverflow.com/questions/10360632/luasocket-custom-headers-404-turns-to-301

标签

sockets

http-headers

lua

luasocket