feat(vmess): add length mask (opt=4) #298
Merged
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The vmess implementation of glider did not have
opt=4
which is length confusion. The middleman can easily get a feature by comparing the length of the first 2 bytes (plaintext of length) of the chunk with the actual length of the TCP stream chunk.For example, if there is a connection to the port that does not meet this feature (with opt=4) and another meets the feature, and the port is confirmed unknown traffic, it can be preliminarily judged to be vmess.