在Mac OS X下也有消息截包的工具，比如： 1.CPA - Cocoa Packet Analyzer http://www.tastycocoabytes.com/cpa/ 2.Wireshark http://www.wireshark.org/ 3. 系统自带的tcpdump sudo tcpdump -i en0 -s 0 -w DumpFile.dmp 4.Packet Peeper http://sourceforge.net/projects/packetpeeper/