mirror of
https://github.com/lunarmodules/luasocket.git
synced 2024-12-26 04:28:20 +01:00
Updated for Lua 4.1-w3.
Dealing with 100 response codes.
This commit is contained in:
Diego Nehab
parent
9d7f43768a
commit
60e7bf48b0
109
src/http.lua
109
src/http.lua
@ -1,6 +1,6 @@
|
||||
-----------------------------------------------------------------------------
|
||||
-- HTTP/1.1 client support for the Lua language.
|
||||
-- LuaSocket 1.4 toolkit.
|
||||
-- LuaSocket 1.5 toolkit.
|
||||
-- Author: Diego Nehab
|
||||
-- Date: 26/12/2000
|
||||
-- Conforming to: RFC 2616, LTN7
|
||||
@ -18,17 +18,10 @@ Public.TIMEOUT = 60
|
||||
-- default port for document retrieval
|
||||
Public.PORT = 80
|
||||
-- user agent field sent in request
|
||||
Public.USERAGENT = "LuaSocket 1.4"
|
||||
Public.USERAGENT = "LuaSocket 1.5"
|
||||
-- block size used in transfers
|
||||
Public.BLOCKSIZE = 8192
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- Required libraries
|
||||
-----------------------------------------------------------------------------
|
||||
dofile "concat.lua"
|
||||
dofile "url.lua"
|
||||
dofile "code.lua"
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
-- Tries to get a pattern from the server and closes socket on error
|
||||
-- sock: socket connected to the server
|
||||
@ -84,8 +77,8 @@ end
|
||||
-----------------------------------------------------------------------------
|
||||
function Private.receive_status(sock)
|
||||
local line, err
|
||||
line, err = %Private.try_receive(sock)
|
||||
if not err then return %Private.get_statuscode(line), line
|
||||
line, err = Private.try_receive(sock)
|
||||
if not err then return Private.get_statuscode(line), line
|
||||
else return nil, nil, err end
|
||||
end
|
||||
|
||||
@ -104,7 +97,7 @@ function Private.receive_headers(sock, headers)
|
||||
local line, err
|
||||
local name, value, _
|
||||
-- get first line
|
||||
line, err = %Private.try_receive(sock)
|
||||
line, err = Private.try_receive(sock)
|
||||
if err then return nil, err end
|
||||
-- headers go until a blank line is found
|
||||
while line ~= "" do
|
||||
@ -116,12 +109,12 @@ function Private.receive_headers(sock, headers)
|
||||
end
|
||||
name = strlower(name)
|
||||
-- get next line (value might be folded)
|
||||
line, err = %Private.try_receive(sock)
|
||||
line, err = Private.try_receive(sock)
|
||||
if err then return nil, err end
|
||||
-- unfold any folded values
|
||||
while not err and strfind(line, "^%s") do
|
||||
value = value .. line
|
||||
line, err = %Private.try_receive(sock)
|
||||
line, err = Private.try_receive(sock)
|
||||
if err then return nil, err end
|
||||
end
|
||||
-- save pair in table
|
||||
@ -144,7 +137,7 @@ function Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
local chunk, size, line, err, go, uerr, _
|
||||
while 1 do
|
||||
-- get chunk size, skip extention
|
||||
line, err = %Private.try_receive(sock)
|
||||
line, err = Private.try_receive(sock)
|
||||
if err then
|
||||
local go, uerr = receive_cb(nil, err)
|
||||
return uerr or err
|
||||
@ -159,7 +152,7 @@ function Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
-- was it the last chunk?
|
||||
if size <= 0 then break end
|
||||
-- get chunk
|
||||
chunk, err = %Private.try_receive(sock, size)
|
||||
chunk, err = Private.try_receive(sock, size)
|
||||
if err then
|
||||
go, uerr = receive_cb(nil, err)
|
||||
return uerr or err
|
||||
@ -171,7 +164,7 @@ function Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
return uerr or "aborted by callback"
|
||||
end
|
||||
-- skip CRLF on end of chunk
|
||||
_, err = %Private.try_receive(sock)
|
||||
_, err = Private.try_receive(sock)
|
||||
if err then
|
||||
go, uerr = receive_cb(nil, err)
|
||||
return uerr or err
|
||||
@ -180,7 +173,7 @@ function Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
-- the server should not send trailer headers because we didn't send a
|
||||
-- header informing it we know how to deal with them. we do not risk
|
||||
-- being caught unprepaired.
|
||||
headers, err = %Private.receive_headers(sock, headers)
|
||||
headers, err = Private.receive_headers(sock, headers)
|
||||
if err then
|
||||
go, uerr = receive_cb(nil, err)
|
||||
return uerr or err
|
||||
@ -202,7 +195,7 @@ end
|
||||
function Private.receivebody_bylength(sock, length, receive_cb)
|
||||
local uerr, go
|
||||
while length > 0 do
|
||||
local size = min(%Public.BLOCKSIZE, length)
|
||||
local size = min(Public.BLOCKSIZE, length)
|
||||
local chunk, err = sock:receive(size)
|
||||
if err then
|
||||
go, uerr = receive_cb(nil, err)
|
||||
@ -230,7 +223,7 @@ end
|
||||
function Private.receivebody_untilclosed(sock, receive_cb)
|
||||
local err, go, uerr
|
||||
while 1 do
|
||||
local chunk, err = sock:receive(%Public.BLOCKSIZE)
|
||||
local chunk, err = sock:receive(Public.BLOCKSIZE)
|
||||
if err == "closed" or not err then
|
||||
go, uerr = receive_cb(chunk)
|
||||
if not go then
|
||||
@ -260,14 +253,14 @@ function Private.receive_body(sock, headers, receive_cb)
|
||||
local te = headers["transfer-encoding"]
|
||||
if te and te ~= "identity" then
|
||||
-- get by chunked transfer-coding of message body
|
||||
return %Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
return Private.receivebody_bychunks(sock, headers, receive_cb)
|
||||
elseif tonumber(headers["content-length"]) then
|
||||
-- get by content-length
|
||||
local length = tonumber(headers["content-length"])
|
||||
return %Private.receivebody_bylength(sock, length, receive_cb)
|
||||
return Private.receivebody_bylength(sock, length, receive_cb)
|
||||
else
|
||||
-- get it all until connection closes
|
||||
return %Private.receivebody_untilclosed(sock, receive_cb)
|
||||
return Private.receivebody_untilclosed(sock, receive_cb)
|
||||
end
|
||||
end
|
||||
|
||||
@ -280,7 +273,7 @@ end
|
||||
-- nil if successfull or an error message in case of error
|
||||
-----------------------------------------------------------------------------
|
||||
function Private.drop_body(sock, headers)
|
||||
return %Private.receive_body(sock, headers, function (c, e) return 1 end)
|
||||
return Private.receive_body(sock, headers, function (c, e) return 1 end)
|
||||
end
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
@ -325,11 +318,11 @@ function Private.send_headers(sock, headers)
|
||||
headers = headers or {}
|
||||
-- send request headers
|
||||
for i, v in headers do
|
||||
err = %Private.try_send(sock, i .. ": " .. v .. "\r\n")
|
||||
err = Private.try_send(sock, i .. ": " .. v .. "\r\n")
|
||||
if err then return err end
|
||||
end
|
||||
-- mark end of request headers
|
||||
return %Private.try_send(sock, "\r\n")
|
||||
return Private.try_send(sock, "\r\n")
|
||||
end
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
@ -346,7 +339,7 @@ end
|
||||
function Private.send_request(sock, method, uri, headers, body_cb)
|
||||
local chunk, size, done, err
|
||||
-- send request line
|
||||
err = %Private.try_send(sock, method .. " " .. uri .. " HTTP/1.1\r\n")
|
||||
err = Private.try_send(sock, method .. " " .. uri .. " HTTP/1.1\r\n")
|
||||
if err then return err end
|
||||
-- if there is a request message body, add content-length header
|
||||
if body_cb then
|
||||
@ -360,11 +353,11 @@ function Private.send_request(sock, method, uri, headers, body_cb)
|
||||
end
|
||||
end
|
||||
-- send request headers
|
||||
err = %Private.send_headers(sock, headers)
|
||||
err = Private.send_headers(sock, headers)
|
||||
if err then return err end
|
||||
-- send request message body, if any
|
||||
if body_cb then
|
||||
return %Private.send_indirect(sock, body_cb, chunk, size)
|
||||
return Private.send_indirect(sock, body_cb, chunk, size)
|
||||
end
|
||||
end
|
||||
|
||||
@ -395,7 +388,7 @@ function Private.fill_headers(headers, parsed)
|
||||
local lower = {}
|
||||
headers = headers or {}
|
||||
-- set default headers
|
||||
lower["user-agent"] = %Public.USERAGENT
|
||||
lower["user-agent"] = Public.USERAGENT
|
||||
-- override with user values
|
||||
for i,v in headers do
|
||||
lower[strlower(i)] = v
|
||||
@ -442,7 +435,7 @@ function Private.authorize(request, parsed, response)
|
||||
body_cb = request.body_cb,
|
||||
headers = request.headers
|
||||
}
|
||||
return %Public.request_cb(authorize, response)
|
||||
return Public.request_cb(authorize, response)
|
||||
end
|
||||
|
||||
-----------------------------------------------------------------------------
|
||||
@ -482,7 +475,7 @@ function Private.redirect(request, response)
|
||||
body_cb = request.body_cb,
|
||||
headers = request.headers
|
||||
}
|
||||
local response = %Public.request_cb(redirect, response)
|
||||
local response = Public.request_cb(redirect, response)
|
||||
-- we pass the location header as a clue we tried to redirect
|
||||
if response.headers then response.headers.location = redirect.url end
|
||||
return response
|
||||
@ -544,7 +537,7 @@ end
|
||||
function Public.request_cb(request, response)
|
||||
local parsed = URL.parse_url(request.url, {
|
||||
host = "",
|
||||
port = %Public.PORT,
|
||||
port = Public.PORT,
|
||||
path ="/",
|
||||
scheme = "http"
|
||||
})
|
||||
@ -558,35 +551,43 @@ function Public.request_cb(request, response)
|
||||
-- default method
|
||||
request.method = request.method or "GET"
|
||||
-- fill default headers
|
||||
request.headers = %Private.fill_headers(request.headers, parsed)
|
||||
request.headers = Private.fill_headers(request.headers, parsed)
|
||||
-- try to connect to server
|
||||
local sock
|
||||
sock, response.error = connect(parsed.host, parsed.port)
|
||||
if not sock then return response end
|
||||
-- set connection timeout so that we do not hang forever
|
||||
sock:timeout(%Public.TIMEOUT)
|
||||
sock:timeout(Public.TIMEOUT)
|
||||
-- send request message
|
||||
response.error = %Private.send_request(sock, request.method,
|
||||
%Private.request_uri(parsed), request.headers, request.body_cb)
|
||||
response.error = Private.send_request(sock, request.method,
|
||||
Private.request_uri(parsed), request.headers, request.body_cb)
|
||||
if response.error then return response end
|
||||
-- get server response message
|
||||
response.code, response.status, response.error =
|
||||
%Private.receive_status(sock)
|
||||
Private.receive_status(sock)
|
||||
if response.error then return response end
|
||||
-- deal with 1xx status
|
||||
if response.code == 100 then
|
||||
response.headers, response.error = Private.receive_headers(sock, {})
|
||||
if response.error then return response end
|
||||
response.code, response.status, response.error =
|
||||
Private.receive_status(sock)
|
||||
if response.error then return response end
|
||||
end
|
||||
-- receive all headers
|
||||
response.headers, response.error = %Private.receive_headers(sock, {})
|
||||
response.headers, response.error = Private.receive_headers(sock, {})
|
||||
if response.error then return response end
|
||||
-- decide what to do based on request and response parameters
|
||||
if %Private.should_redirect(request, response) then
|
||||
%Private.drop_body(sock, response.headers)
|
||||
if Private.should_redirect(request, response) then
|
||||
Private.drop_body(sock, response.headers)
|
||||
sock:close()
|
||||
return %Private.redirect(request, response)
|
||||
elseif %Private.should_authorize(request, parsed, response) then
|
||||
%Private.drop_body(sock, response.headers)
|
||||
return Private.redirect(request, response)
|
||||
elseif Private.should_authorize(request, parsed, response) then
|
||||
Private.drop_body(sock, response.headers)
|
||||
sock:close()
|
||||
return %Private.authorize(request, parsed, response)
|
||||
elseif %Private.has_body(request, response) then
|
||||
response.error = %Private.receive_body(sock, response.headers,
|
||||
return Private.authorize(request, parsed, response)
|
||||
elseif Private.has_body(request, response) then
|
||||
response.error = Private.receive_body(sock, response.headers,
|
||||
response.body_cb)
|
||||
if response.error then return response end
|
||||
sock:close()
|
||||
@ -618,15 +619,15 @@ function Public.request(request)
|
||||
local response = {}
|
||||
if request.body then
|
||||
request.body_cb = function()
|
||||
return %request.body, strlen(%request.body)
|
||||
return request.body, strlen(request.body)
|
||||
end
|
||||
end
|
||||
local cat = Concat.create()
|
||||
response.body_cb = function(chunk, err)
|
||||
if chunk then %cat:addstring(chunk) end
|
||||
if chunk then cat:addstring(chunk) end
|
||||
return 1
|
||||
end
|
||||
response = %Public.request_cb(request, response)
|
||||
response = Public.request_cb(request, response)
|
||||
response.body = cat:getresult()
|
||||
response.body_cb = nil
|
||||
return response
|
||||
@ -646,9 +647,9 @@ end
|
||||
-- error: error message if any
|
||||
-----------------------------------------------------------------------------
|
||||
function Public.get(url_or_request)
|
||||
local request = %Private.build_request(url_or_request)
|
||||
local request = Private.build_request(url_or_request)
|
||||
request.method = "GET"
|
||||
local response = %Public.request(request)
|
||||
local response = Public.request(request)
|
||||
return response.body, response.headers,
|
||||
response.code, response.error
|
||||
end
|
||||
@ -669,10 +670,10 @@ end
|
||||
-- error: error message, or nil if successfull
|
||||
-----------------------------------------------------------------------------
|
||||
function Public.post(url_or_request, body)
|
||||
local request = %Private.build_request(url_or_request)
|
||||
local request = Private.build_request(url_or_request)
|
||||
request.method = "POST"
|
||||
request.body = request.body or body
|
||||
local response = %Public.request(request)
|
||||
local response = Public.request(request)
|
||||
return response.body, response.headers,
|
||||
response.code, response.error
|
||||
end
|
||||
|
||||
Loading…
Reference in New Issue
Block a user