- buff2long
buff convert to long
- closeSocket
send quit command to server and close socket
- getIpAddress
buff convert to ip address
- long2buff
long convert to buff (big-endian)
- md5
md5 function
- packHeader
pack header by FastDFS transfer protocol
- pack_metadata
pack metadata array to string
- recvHeader
receive pack header
- recvPackage
receive whole pack
- split_metadata
split metadata to name value pair array
- getToken
get token for file URL
- activeTest
send ACTIVE_TEST command to server, test if network is ok and the server is
alive