User with only Viewing Privilege can send message to Room
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原文摘录
摘自原文（1499 字符中的一小部分）
When the owner of a chat room gives any user Viewing Privilege, that user can then send messages to the room. As expected, there's no form to send messages when the user access the room since in theory it shouldn't be possible. However, messages via POST requests can still be sent and processed.
原文中的代码
POST /conpherence/update/1/ HTTP/1.1 Host: 192.168.25.10 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Phabricator-Csrf: …
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