From: Angus Gratton <angus@espressif.com>
Date: Fri, 21 Apr 2017 04:24:59 +0000 (+0800)
Subject: Merge branch 'bugfix/mbedtls_wrong_errno' into 'master'
X-Git-Tag: v2.1-rc1~180
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2c17b16328104d48a822ee9da9be571d535fe072;p=esp-idf

Merge branch 'bugfix/mbedtls_wrong_errno' into 'master'

mbedtls port: Fix detection of EWOULDBLOCK/EAGAIN with non-blocking sockets

Since mbedtls_net_errno is reset by fcntl, it is reset after calling
net_would_block, so the call to mbedtls_net_errno in mbedtls_net_recv
and mbedtls_net_send will always get back 0. This change propagates
the value returned by mbedtls_net_errno up through net_would_block,
to allow the correct error value to be used and avoid a redundant
call to mbedtls_net_errno.

Merges PR #511 https://github.com/espressif/esp-idf/pull/511

See merge request !688
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2c17b16328104d48a822ee9da9be571d535fe072