[摘要]+----+--------+ If the selected METHOD is X''FF'', none of the methods listed by ...
+----+--------+
If the selected METHOD is X''FF'', none of the methods listed by the
client are acceptable, and the client MUST close the connection.
The values currently defined for METHOD are:
o X''00'' NO AUTHENTICATION REQUIRED ---------无用户密码 00
o X''01'' GSSAPI ---------??? GSSAPI ?
o X''02'' USERNAME/PASSWORD ---------有用户密码 02
o X''03'' to X''7F'' IANA ASSIGNED
o X''80'' to X''FE'' RESERVED FOR PRIVATE METHODS
o X''FF'' NO ACCEPTABLE METHODS ---------失败 255
The client and server then enter a method-specific sub-negotiation.
换言之,就是向服务器发送三个字节的Byte数组,由于是无须用户/密码校验,展开来写是 05 01 00
然后服务器返回两个字节的信息,第一个字节固定,第而个字节是说明,如果是16进制的FF(即十进制255)表示连接失败(o X''FF'' NO ACCEPTABLE METHODS)根据上面的列表,我们连接成功应该第二字节为 00.
然后我们进入第二步,请看以下RFC说明:
Once the method-dependent subnegotiation has completed, the client
sends the request details. If the negotiated method includes
encapsulation for purposes of integrity checking and/or
confidentiality, these requests MUST be encapsulated in the method-
dependent encapsulation.
The SOCKS request is formed as follows:
+----+-----+-------+------+----------+----------+
关键词：VB6中运用Winsock穿越各种代理的完成(TCP协议)