[#BIO_err_is_non_fatal]
= BIO&lowbar;err&lowbar;is&lowbar;non&lowbar;fatal
:mrdocs:

Report whether a system or socket error code is a non&hyphen;fatal retryable I&sol;O condition&period;

== Synopsis

Declared in `&lt;openssl&sol;bio&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO&lowbar;err&lowbar;is&lowbar;non&lowbar;fatal(unsigned int errcode);
----

== Return Value

1 if the error is considered non&hyphen;fatal for BIO I&sol;O, or 0 otherwise&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *errcode*
| Error code such as a value from errno &sol; WSAGetLastError()&period;
|===


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