[摘要]+----+-----+-------+------+----------+----------+ Where: o VER protocol version: X...
+----+-----+-------+------+----------+----------+
Where:
o VER protocol version: X''05'' ------------ 固定 05
o REP Reply field:
o X''00'' succeeded ------------ 若为 00 成功 其余可以都看成失败
o X''01'' general SOCKS server failure
o X''02'' connection not allowed by ruleset
o X''03'' Network unreachable
o X''04'' Host unreachable
o X''05'' Connection refused
o X''06'' TTL expired
o X''07'' Command not supported
o X''08'' Address type not supported
o X''09'' to X''FF'' unassigned
o RSV RESERVED
o ATYP address type of following address
o IP V4 address: X''01''
o DOMAINNAME: X''03''
o IP V6 address: X''04''
o BND.ADDR server bound address
o BND.PORT server bound port in network octet order
Fields marked RESERVED (RSV) must be set to X''00''.
可见,对于返回信息,只须判断第二字节是否为00.若为 00 连接成功,剩下的操作和直连一样,Winsock可直接用SendData 和 GetData 发送\接受数据.
下面介绍需要验证用户名/密码的socks5穿透
第一步还是发送三个字节,只是内容有变,展开来写为: 05 01 02
服务器返回信息也有所不同,正确的返回为 05 02
成功后发送用户/密码信息,请看RFC 说明:
Once the SOCKS V5 server has started, and the client has selected the
Username/Password Authentication protocol, the Username/Password
subnegotiation begins. This begins with the client producing a
Username/Password request:
+----+------+----------+------+----------+
关键词：VB6中运用Winsock穿越各种代理的完成(TCP协议)