def real_connect(host=nil, user=nil, passwd=nil, db=nil, port=nil, socket=nil, flag=nil)
@server_status = SERVER_STATUS_AUTOCOMMIT
if (host == nil or host == "localhost") and defined? UNIXSocket then
unix_socket = socket || ENV["MYSQL_UNIX_PORT"] || MYSQL_UNIX_ADDR
sock = UNIXSocket::new(unix_socket)
@host_info = Error::err(Error::CR_LOCALHOST_CONNECTION)
@unix_socket = unix_socket
else
sock = TCPSocket::new(host, port||ENV["MYSQL_TCP_PORT"]||(Socket::getservbyname("mysql","tcp") rescue MYSQL_PORT))
@host_info = sprintf Error::err(Error::CR_TCP_CONNECTION), host
end
@host = host ? host.dup : nil
sock.setsockopt Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, true
@net = Net::new sock
a = read
@protocol_version = a.slice!(0)
@server_version, a = a.split(/\0/,2)
@thread_id, @scramble_buff = a.slice!(0,13).unpack("La8")
if a.size >= 2 then
@server_capabilities, = a.slice!(0,2).unpack("v")
end
if a.size >= 16 then
@server_language, @server_status = a.unpack("cv")
end
flag = 0 if flag == nil
flag |= @client_flag | CLIENT_CAPABILITIES
flag |= CLIENT_CONNECT_WITH_DB if db
data = Net::int2str(flag)+Net::int3str(@max_allowed_packet)+(user||"")+"\0"+scramble(passwd, @scramble_buff, @protocol_version==9)
if db and @server_capabilities & CLIENT_CONNECT_WITH_DB != 0 then
data << "\0"+db
@db = db.dup
end
write data
read
self
end