Hi,
I'm encountering a problem with SSL_write when writing a large amount of
data (about 1Mb) using non-blocking sockets.
For smaller amounts of data (about 1kb), the return code (bytes written)
what you would expect.
For the larger amount of data, the return code is -1. When checking
SSL_get_error() the result is SSL_ERROR_NONE (0). If I then repeat the
write, as if the result want SSL_WANT_READ or SSL_WANT_WRITE, then the
behaviour just repeats itself.
There is no apparent explanation in the man pages to SSL_write of what
action to take if the bytes written is -1, but SSL_get_error() returns 0.
Then I considered that I might want to implement partial writing. So I
changed the code to add:
(void)SSL_CTX_set_mode(sslContextP, SSL_MODE_ENABLE_PARTIAL_WRITE);
... and then the behaviour does change. Now the bytes written returns a
block of data (16384 bytes), until I have written about 300k, when the same
behaviour above occurs.
Can anybody enlighten me on how to handle this combination.
Using blocking sockets, there was no problem.
Thanks,
G.
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