A reference of SIP protocol stack, very good.
protocol+analysis 技术资料
汇集 protocol+analysis 相关的电路原理图、PCB工程文件、单片机/FPGA源代码、数据手册与应用设计方案。
RPC: Remote Procedure Call Protocol Specification Version 2
HCI USB driver for Linux Bluetooth protocol stack
PIC USB source code,include usb protocol stack.
ATMEL 90usb128 USB source,include USB protocol stack.
UBX protocol specification for u-blox 5 receiver.
protocol for serial communication in rs485 network device
email client and support pop3、smtp、imap protocol.
SIP Understanding the Session Initiation Protocol, Second Edition
document about DEEC protocol for wireless sensor network