luafan

fan.udpd

conn = udpd.new(arg:table)

create a udp socket.

dest = udpd.make_dest(host:string, port:number)

create a dest:UDP_AddrInfo, can be used in conn:send, this api is non-blocking.

---

keys in the arg:

• onread: function?

  callback on receive data. arg1 => data:string, arg2 => UDP_AddrInfo

• onsendready: function?

  callback on ready to send new data after send_req. no arg.

• host: string?

  host to send message to.

• port: integer?

  port to send message to.

• bind_host: string?

  local bind host, default “0.0.0.0”

• bind_port: integer

  local bind port

---

conn apis:

send(buf, addr?)

send out data buf, if addr:UDP_AddrInfo specified, use it as the destination address, otherwise, use the host:port when create this udp object.

send_req()

request to send data, when output buffer is available, onsendready will be called.

getPort()

get the udp local binding port.

close()

cleanup udp reference.

rebind()

rebind the same host/port.(e.g. resume back in mobile device, rebind port.)

UDP_ADDR_INFO

getHost():string

get the income message host.

getPort():integer

get the income message port.

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