Support auth

[harlanc]

How to Use

We take RTMP URL authentication for a example:
Now authentication can be only supported using configuration file.

Configure the configuration file:

• Add authsecret:

  [authsecret]
  # used for md5 authentication.  
  key = "123"
  # used for simple authentication
  password = "456"
  

• Configure the RTMP protocol:

   [rtmp]
   enabled = true
   port = 1935
   gop_num = 1
   [rtmp.auth]
   # playing a RTMP stream requires authorization.(Set it to false or remove this line if not needed)
   pull_enabled = true
   # pushing a RTMP stream requires authorization.(Set it to false or remove this line if not needed)
   push_enabled = true
   # using simple algorithm(or set it to "md5" to use md5 authentication)
   algorithm = "simple"
  

• Start the xiu server

  ./xiu -c config.toml
  

Algorithm Introduction

• Simple

  The url used for Pushing/Pulling a RTMP stream is as follows(add token={password} as URL query):

   rtmp://127.0.0.1:1935/live/test?token=456
  

• Md5

  we should add token={md5({key}{stream_name})} as URL query:

   md5("123test") = "abe45d28281cfa2a4201c9b90a143095" 
  

  so the URL is

   rtmp://127.0.0.1:1935/live/test?token=abe45d28281cfa2a4201c9b90a143095