For #307, refine RTC publisher structure. 4.0.25
For #307, refine RTC publisher structure. 4.0.25

winlinvip/srs,winlinvip/srs,ossrs/srs,ossrs/srs,winlinvip/simple-rtmp-server,winlinvip/srs,ossrs/srs,winlinvip/srs,ossrs/srs,ossrs/srs,winlinvip/srs,ossrs/srs,winlinvip/srs