gluahttp provides an easy way to make HTTP requests from within GopherLua.
go get github.com/Greyh4t/gluahttp
package main
import (
"time"
"github.com/Greyh4t/dnscache"
"github.com/Greyh4t/gluahttp"
"github.com/yuin/gopher-lua"
)
var jsonStr = `
local json = {}
-- Internal functions.
local function kind_of(obj)
if type(obj) ~= 'table' then return type(obj) end
local i = 1
for _ in pairs(obj) do
if obj[i] ~= nil then i = i + 1 else return 'table' end
end
if i == 1 then return 'table' else return 'array' end
end
local function escape_str(s)
local in_char = {'\\', '"', '/', '\b', '\f', '\n', '\r', '\t'}
local out_char = {'\\', '"', '/', 'b', 'f', 'n', 'r', 't'}
for i, c in ipairs(in_char) do
s = s:gsub(c, '\\' .. out_char[i])
end
return s
end
-- Returns pos, did_find; there are two cases:
-- 1. Delimiter found: pos = pos after leading space + delim; did_find = true.
-- 2. Delimiter not found: pos = pos after leading space; did_find = false.
-- This throws an error if err_if_missing is true and the delim is not found.
local function skip_delim(str, pos, delim, err_if_missing)
pos = pos + #str:match('^%s*', pos)
if str:sub(pos, pos) ~= delim then
if err_if_missing then
error('Expected ' .. delim .. ' near position ' .. pos)
end
return pos, false
end
return pos + 1, true
end
-- Expects the given pos to be the first character after the opening quote.
-- Returns val, pos; the returned pos is after the closing quote character.
local function parse_str_val(str, pos, val)
val = val or ''
local early_end_error = 'End of input found while parsing string.'
if pos > #str then error(early_end_error) end
local c = str:sub(pos, pos)
if c == '"' then return val, pos + 1 end
if c ~= '\\' then return parse_str_val(str, pos + 1, val .. c) end
-- We must have a \ character.
local esc_map = {b = '\b', f = '\f', n = '\n', r = '\r', t = '\t'}
local nextc = str:sub(pos + 1, pos + 1)
if not nextc then error(early_end_error) end
return parse_str_val(str, pos + 2, val .. (esc_map[nextc] or nextc))
end
-- Returns val, pos; the returned pos is after the number's final character.
local function parse_num_val(str, pos)
local num_str = str:match('^-?%d+%.?%d*[eE]?[+-]?%d*', pos)
local val = tonumber(num_str)
if not val then error('Error parsing number at position ' .. pos .. '.') end
return val, pos + #num_str
end
-- Public values and functions.
function json.encode(obj, as_key)
local s = {} -- We'll build the string as an array of strings to be concatenated.
local kind = kind_of(obj) -- This is 'array' if it's an array or type(obj) otherwise.
if kind == 'array' then
if as_key then error('Can\'t encode array as key.') end
s[#s + 1] = '['
for i, val in ipairs(obj) do
if i > 1 then s[#s + 1] = ', ' end
s[#s + 1] = json.encode(val)
end
s[#s + 1] = ']'
elseif kind == 'table' then
if as_key then error('Can\'t encode table as key.') end
s[#s + 1] = '{'
for k, v in pairs(obj) do
if #s > 1 then s[#s + 1] = ', ' end
s[#s + 1] = json.encode(k, true)
s[#s + 1] = ':'
s[#s + 1] = json.encode(v)
end
s[#s + 1] = '}'
elseif kind == 'string' then
return '"' .. escape_str(obj) .. '"'
elseif kind == 'number' then
if as_key then return '"' .. tostring(obj) .. '"' end
return tostring(obj)
elseif kind == 'boolean' then
return tostring(obj)
elseif kind == 'nil' then
return 'null'
else
error('Unjsonifiable type: ' .. kind .. '.')
end
return table.concat(s)
end
json.null = {} -- This is a one-off table to represent the null value.
function json.decode(str, pos, end_delim)
pos = pos or 1
if pos > #str then error('Reached unexpected end of input.') end
local pos = pos + #str:match('^%s*', pos) -- Skip whitespace.
local first = str:sub(pos, pos)
if first == '{' then -- Parse an object.
local obj, key, delim_found = {}, true, true
pos = pos + 1
while true do
key, pos = json.decode(str, pos, '}')
if key == nil then return obj, pos end
if not delim_found then error('Comma missing between object items.') end
pos = skip_delim(str, pos, ':', true) -- true -> error if missing.
obj[key], pos = json.decode(str, pos)
pos, delim_found = skip_delim(str, pos, ',')
end
elseif first == '[' then -- Parse an array.
local arr, val, delim_found = {}, true, true
pos = pos + 1
while true do
val, pos = json.decode(str, pos, ']')
if val == nil then return arr, pos end
if not delim_found then error('Comma missing between array items.') end
arr[#arr + 1] = val
pos, delim_found = skip_delim(str, pos, ',')
end
elseif first == '"' then -- Parse a string.
return parse_str_val(str, pos + 1)
elseif first == '-' or first:match('%d') then -- Parse a number.
return parse_num_val(str, pos)
elseif first == end_delim then -- End of an object or array.
return nil, pos + 1
else -- Parse true, false, or null.
local literals = {['true'] = true, ['false'] = false, ['null'] = json.null}
for lit_str, lit_val in pairs(literals) do
local lit_end = pos + #lit_str - 1
if str:sub(pos, lit_end) == lit_str then return lit_val, lit_end + 1 end
end
local pos_info_str = 'position ' .. pos .. ': ' .. str:sub(pos, pos + 10)
error('Invalid json syntax starting at ' .. pos_info_str)
end
end
return json
`
func main() {
L := lua.NewState()
defer L.Close()
L.DoString(jsonStr)
j := L.Get(-1)
L.Pop(1)
loaded := L.GetField(L.Get(-10000), "_LOADED")
L.SetField(loaded, "json", j)
// resolver为dns缓存
// 如果不需要使用dns缓存，New(nil)即可
resolver := dnscache.New(time.Minute * 10)
L.PreloadModule("http", gluahttp.New(resolver).Loader)
if err := L.DoString(`
local json = require("json")
local http = require("http")
-- 支持get, post, head, delete, patch, put, options
resp, err = http.get("http://passport.jd.com/new/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F", {
-- 请求超时，默认30秒
timeout = 10,
-- 是否校验服务端证书，默认true
-- verify = false,
-- 是否允许重定向，默认true
-- redirect = false,
-- 是否允许请求gzip格式，默认true
-- compress = false,
-- 是否添加ajax头，默认false
-- ajax = true,
-- 自定义host头
-- host = "www.jd.com"
-- 401基础认证
-- auth = {"username","password"},
-- http请求头
headers = {
Test="xxx",
["User-Agent"]="testUserAgent",
},
-- 自定义cookie
cookies = {
session="xxx",
user="test"
},
-- 代理
proxies = {
http="http://127.0.0.1:8080",
https="http://127.0.0.1:8080"
},
-- query参数，参数会被url编码
-- params = {
-- "q1"="测试",
-- "q2"="bbb"
-- },
-- 原始query，不被url编码，如果设置了raw_query，params会被忽略
-- raw_query = "q1=测试&q2=bbb",
-- 请求body，参数会被url编码
-- data = {
-- data1="测试",
-- data2="aaa"
-- },
-- 原始请求body，不被url编码，需要自行设置Content-Type头，如果设置了raw_data，data、json、xml、files参数将被忽略
-- raw_data = "data1=测试&data2=aaa",
-- 上传文件，key为字段名，value为文件名，post方法可同时上传多个
-- files={
-- file="test.txt"
-- },
-- 发送json，参数为json格式字符串
-- json = '{"a":"d","b":[{"c":1},{"d":2}]}',
-- 发送xml，参数为xml格式字符串
-- xml = '<?xml version="1.0" encoding="ISO-8859-1"?>' ..
-- '<!-- Copyright w3school.com.cn -->' ..
-- '<note>' ..
-- '<to>George</to>' ..
-- '<from>John</from>' ..
-- '<heading>Reminder</heading>' ..
-- "<body>Don't forget the meeting!</body>" ..
-- '</note>',
})
if err then
print(err)
return
end
print(json.encode(resp))
`); err != nil {
panic(err)
}
}{
"status_code": 200,
"body": "<!DOCTYPE html>\r\n<html>\r\n<head>\r\n <meta charset=\"UTF-8\"\/>\r\n <meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"\/>\r\n <title>京东<\/title>\r\n<\/body>\r\n<\/html>\r\n",
"body_size": 15579,
"headers": {
"Pragma": "no-cache,",
"Server": "jfe,",
"Cache-Control": "max-age=0,",
"Expires": "Mon, 18 Dec 2017 09:19:54 GMT,",
"Set-Cookie": "qr_t=c; Path=\/; HttpOnly,alc=CMDyrO3bMtUxD6DofCkq+w==; Path=\/; HttpOnly;,_t=wR2FB6ybw8RML13oirnDVqNsenKXTcxQGy\/tisG3EDE=; Path=\/;,",
"Content-Language": "zh-CN,",
"Date": "Mon, 18 Dec 2017 09:19:54 GMT,",
"Content-Length": "15579,",
"Content-Type": "text\/html;charset=GBK,",
"Vary": "Accept-Encoding,"
},
"raw_headers": "Content-Type: text\/html;charset=GBK\r\nVary: Accept-Encoding\r\nPragma: no-cache\r\nSet-Cookie: qr_t=c; Path=\/; HttpOnly\r\nSet-Cookie: alc=CMDyrO3bMtUxD6DofCkq+w==; Path=\/; HttpOnly;\r\nSet-Cookie: _t=wR2FB6ybw8RML13oirnDVqNsenKXTcxQGy\/tisG3EDE=; Path=\/;\r\nContent-Language: zh-CN\r\nServer: jfe\r\nCache-Control: max-age=0\r\nExpires: Mon, 18 Dec 2017 09:19:54 GMT\r\nDate: Mon, 18 Dec 2017 09:19:54 GMT\r\nContent-Length: 15579",
"cookies": {
"qr_t": "c",
"alc": "CMDyrO3bMtUxD6DofCkq+w==",
"_t": "wR2FB6ybw8RML13oirnDVqNsenKXTcxQGy\/tisG3EDE="
},
"raw_cookies": "qr_t=c;alc=CMDyrO3bMtUxD6DofCkq+w==;_t=wR2FB6ybw8RML13oirnDVqNsenKXTcxQGy\/tisG3EDE=",
"proto": "HTTP\/1.1",
"url": "https:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F",
"request": {
"method": "GET",
"url": "https:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F",
"scheme": "https",
"proto": "",
"host": "passport.jd.com",
"body": "",
"headers": {
"X-Scanner": "ZERO,",
"Test": "xxx,",
"User-Agent": "testUserAgent,",
"Cookie": "session=xxx; user=test,",
"Referer": "http:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F,"
},
"raw_headers": "X-Scanner: ZERO\r\nTest: xxx\r\nUser-Agent: testUserAgent\r\nCookie: session=xxx; user=test\r\nReferer: http:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F",
"cookies": {
"session": "xxx",
"user": "test"
},
"raw_cookies": "session=xxx;user=test",
"raw": "GET \/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F \r\nHost: passport.jd.com\r\nCookie: session=xxx; user=test\r\nReferer: http:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F\r\nX-Scanner: ZERO\r\nTest: xxx\r\nUser-Agent: testUserAgent\r\n\r\n"
},
"history": [{
"status_code": 301,
"body": "",
"body_size": 0,
"headers": {
"Date": "Mon, 18 Dec 2017 09:19:53 GMT,",
"Content-Type": "text\/html,",
"Content-Length": "178,",
"Location": "https:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F,",
"Server": "jfe,"
},
"raw_headers": "Content-Length: 178\r\nLocation: https:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F\r\nServer: jfe\r\nDate: Mon, 18 Dec 2017 09:19:53 GMT\r\nContent-Type: text\/html",
"cookies": {},
"raw_cookies": "",
"proto": "HTTP\/1.1",
"url": "http:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F",
"request": {
"method": "GET",
"url": "http:\/\/passport.jd.com\/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F",
"scheme": "http",
"proto": "HTTP\/1.1",
"host": "passport.jd.com",
"body": "",
"headers": {
"X-Scanner": "ZERO,",
"Test": "xxx,",
"User-Agent": "testUserAgent,",
"Cookie": "session=xxx; user=test,"
},
"raw_headers": "Test: xxx\r\nUser-Agent: testUserAgent\r\nCookie: session=xxx; user=test\r\nX-Scanner: ZERO",
"cookies": {
"session": "xxx",
"user": "test"
},
"raw_cookies": "session=xxx;user=test",
"raw": "GET \/new\/login.aspx?ReturnUrl=http%3A%2F%2Fhome.jd.com%2F HTTP\/1.1\r\nHost: passport.jd.com\r\nX-Scanner: ZERO\r\nTest: xxx\r\nUser-Agent: testUserAgent\r\nCookie: session=xxx; user=test\r\n\r\n"
}
}
]
}