Github user cherrot commented on the pull request:
https://github.com/apache/thrift/pull/945#issuecomment-204951251
Yes you are right, using `isActive` would invoke `select/poll` and `recv`
system calls than a straight forward `send`.
As a lower layer library, I think it would be nice to provide a convenient
API telling the underlying state. Users could decide whether to use this or not.
And what is the [`peek` method in C++
lib](https://github.com/apache/thrift/blob/cdc83335d60756c4bfb0d2c8af7933500c9e3c06/lib/cpp/src/thrift/transport/TSocket.cpp#L181-L235)
for? Is there anything wrong with it?
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