Github user oknet commented on the issue:
https://github.com/apache/trafficserver/pull/701
@shinrich I remember that SSL_write would return âSSL_WANT_READâ error
code.
from: https://www.openssl.org/docs/manmaster/ssl/SSL_write.html
If the underlying BIO is non-blocking, SSL_write() will also return, when
the underlying BIO could not satisfy the needs of SSL_write() to continue the
operation. In this case a call to SSL_get_error with the return value of
SSL_write() will yield SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE. As at any
time a re-negotiation is possible, a call to SSL_write() can also cause read
operations! The calling process then must repeat the call after taking
appropriate action to satisfy the needs of SSL_write(). The action depends on
the underlying BIO. When using a non-blocking socket, nothing is to be done,
but select() can be used to check for the required condition. When using a
buffering BIO, like a BIO pair, data must be written into or retrieved out of
the BIO before being able to continue.
Is the code added for handle SSL_ERROR_WANT_READ or related ?
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