http server base on lua + libuv

项目灵感来自fibjs和openresty。

参考：

• nginx
• io.js
• openresty
• luvit
• aLiLua
• luajit.io

实现目标：通过对coroutine包装实现同步代码编写异步程序，lua代码实现[形式同步]，c代码实现[实质异步]。

开发模式：需求驱动

##第一阶段工作：http1.1 预计三个月完成

• bin2hex
• hex2bin
• base64.encode
• base64.decode
• base64.encodeURL
• base64.decodeURL
• crypto.hash
• crypto.hmac
• JSON.parse
• JSON.stringfy
• querystring
• escape
• unescape
• encodeURI
• decodeURI
• encodeURIComponent
• decodeURIComponent

###模块 ####system

system.cpuinfo()

• @overview returns an array of all cpus informations.
• @return {table[array(object)]}

  ret = {
    {
      model = '{string} Intel(R) Core(TM) i7 CPU860 @2.80GHz',
      speed = '{integer} [MHz]',
      times = {
        user = '{integer}',
	      nice = '{integer}',
        sys = '{integer}',
        idle = '{integer}',
        irq = '{integer}'
      } 
    },
    {
      model = '{string}',
      speed = '{integer}',
      times = {
        user = '{integer}',
	      nice = '{integer}',
        sys = '{integer}',
        idle = '{integer}',
        irq = '{integer}'
      } 
    }
  }

system.meminfo()

• @overview returns the total and free system memory in bytes.
• @return {table}

  ret = {
    total = '{integer} [bytes]',
    free = '{integer} [bytes]'
  }

system.loadavg()

• @overview returns an array containing the 1, 5, 15 minute load averages.
• @return {table[array(number)]}

system.hrtime()

• @overview returns the current high-resolution real time in nanoseconds.
• @return {integer} [nanoseconds]

system.uptime()

• @overview returns the system running time in seconds
• @return {number} [seconds]

####process

process.fork(options)

• @overview create a process and return the pid.
• @param options {table}

  local options = {
    file = '{string} the file to run in the process',
    args = '{table[array(string)]} string arguments',
    uid = '{integer} the user identity of the process',
    gid = '{integer} the group identity of the process',
    forever = '{boolean} if true, the process will restart when it dies',
    cpu = '{integer} set the affinity of CPU and process',
    detached = '{boolean} if true, the child process will be made the leader of a new process group. This makes it possible for the child to continue running after the parent exits'
  }

• @return pid {integer}

process.exec(command)

• @overview create a new process and executive the command
• @param command {string}
• @return pid {integer}

process.cwd()

• @overview return the current working directory of the process
• @return cwd {string}

process.exit([signal])

• @overview end the process with the specified signal
• @param signal {integer|default:SIGTERM}

process.abort()

• @overview abort the process and generate a core file(if core file is open)

process.kill(pid[, signal])

• @overview send a signal to a process
• @param pid {integer}
• @param signal {integer|default:SIGTERM}

process.uptime()

• @overview return the process running time in seconds
• @return {integer} [seconds]

####dns dns.resolve4(hostname)

• @overvie resolve hostname(e.g. 'baidu.com') into an array of IPv4 address
• @param hostname {string}
• @return {table[array(string)]} ips array

dns.resolve6(hostname)

• @overvie resolve hostname(e.g. 'baidu.com') into an array of IPv6 address
• @param hostname {string}
• @return {table[array(string)]} ips array

####tcp tcp.createServer(port, onconnect[, options])

• @overview create a new tcp server
• @param port {integer|required}
• @param onconnect {function|required}

  local function onconnect(socket, server)
  end

• @param options {table}

  local options = {
    family = '{integer|default: 4}',
    host = '{string|default: 0.0.0.0(::)}',
    timeout = '{integer|default: 0}',
    tcp_nodelay = '{boolean|default: true}',
    tcp_keepalive = '{boolean|default: true}',
    tcp_keepidle = '{integer|default: 0}',
    tcp_backlog = 'integer|default: 511}',
    tcp_reuseport = '{boolean|default: false}',
    read_buffer_size = '{integer|default: 16}',
    maxconnections = '{integer|default: 65535}'
  }

tcp.connect(port[, host, options])

• @overview connect to a host:port and return a new socket
• @param port {integer|required}
• @param host {string}
• @param options {table}

  local options = {
    family = '{integer|default: 4}',
    timeout = '{integer|default: 0}',
    tcp_nodelay = '{boolean|default: true}',
    tcp_keepalive = '{boolean|default: true}',
    tcp_keepidle = '{integer|default: 0}',
    read_buffer_size = '{integer|default: 16}'
  }

• @return {2} socket {table[object]} error {table}

  error = {
    code = '[integer] error code',
    name = '[string] error name',
    message = '[string] error message'
  }

tcp.isIP(address)

• @overview test if address is an IPv4 or IPv6 address
• @param address {string}
• @return {integer} IPv4: 4, IPv6: 6, not an address: 0

server:address()

• @overview return the local address of the server
• @return address {table}

  address = {
    family = '{integer}',
    port = '{integer}',
    address = '{string}'
  }

server:connections()

• @overview return the current connections of the server
• @return {integer}

server:close()

• @overview close the server

socket:read(n)

• @overview read n bytes data from read buffer
• @param n {integer} bytes
• @return {2} data {string} error {table}

socket:readline()

• @overview read a line data from read buffer
• @return {2} data {string} error {table}

socket:write(data)

• @overview send data to the socket
• @param data {string|table[array(string)]}
• @return {table}

socket:localAddress()

• @overview return the local address of the socket
• @return address {table}

socket:remoteAddress()

• @overview return the remote address of the socket
• @return address {table}

socket:setTimeout(timeout)

• @overview set timeout milliseconds of inactivity(no read and write) on the socket, when the socket timeout, socket:read(n), socket:readline(), socket:writ(data) will return an error
• @param timeout {integer} [milliseconds]

socket:setNodelay([enable])

• @overview enable/disable the nagle algorithm
• @param enable {boolean|default: true}
• @return error {table}

socket:setKeepalive([enable][, idle])

• @overview enable/disable keep-alive functionality
• @param enable {boolean|default: true}
• @parm idle {integer|default : 0}
• @return error {table}

socket:end()

• @overview half close the socket, the socket write channel is shutdown
• @return error {table}

####http 进行中

####websocket

以下模块采用迭代开发模式，逐步完善

####log

####https

####redis

####mysql

####mongodb

####sequoiadb

##第二阶段工作：测试 预计两个月完成

####单元测试

####性能测试

##第三阶段工作：实例 结合实际情况开展项目，通过项目开发过程中出现的问题，形成需求，驱动links开发

####社区

####聊天

####游戏

##第四阶段工作：http2.0

####spdy3.0 看http2.0发展情况，如果http2.0推广的迅速就跳过这个阶段

####http2.0