Conversion of nng_aio to mdbook in progress

1 files changed, 65 insertions, 0 deletions

diff --git a/docs/ref/api/aio/nng_aio.md b/docs/ref/api/aio/nng_aio.md
new file mode 100644
index 00000000..0fdb6ca1
--- /dev/null
+++ b/docs/ref/api/aio/nng_aio.md
@@ -0,0 +1,65 @@
+# nng_aio
+
+## NAME
+
+nng_aio - asynchronous I/O handle
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+typedef struct nng_aio nng_aio;
+```
+
+## DESCRIPTION
+
+An {{i:`nng_aio`}}{{hi:aio}} is an opaque structure used in conjunction with
+{{i:asynchronous I/O}} operations.
+Every asynchronous operation uses one of these structures, each of which
+can only be used with a single operation at a time.
+
+Asynchronous operations are performed without blocking calling application threads.
+Instead the application registers a callback function to be executed
+when the operation is complete (whether successfully or not).
+This callback will be executed exactly once.
+
+The asynchronous I/O framework also supports cancellation of
+operations that are already in progress
+(see [`nng_aio_cancel`][aio_cancel]), as well setting a maximum
+timeout for them to complete within
+(see [`nng_aio_set_timeout`][nng_aio_set_timeout]).
+
+It is also possible to initiate an asynchronous operation, and wait for it to
+complete using [`nng_aio_wait`][nng_aio_wait].
+
+These structures are created using [`nng_aio_alloc`][nng_aio_alloc],
+and destroyed using [`nng_aio_free`][nng_aio_free].
+
+## SEE ALSO
+
+[nng_aio_cancel][aio_cancel],
+[nng_aio_alloc][nng_aio_alloc],
+[nng_aio_free][nng_aio_free],
+[nng_aio_set_timeout][nng_aio_set_timeout]
+
+<!--
+xref:nng_aio_count.3.adoc[nng_aio_count(3)],
+xref:nng_aio_free.3.adoc[nng_aio_free(3)],
+xref:nng_aio_get_input.3.adoc[nng_aio_get_input(3)],
+xref:nng_aio_get_msg.3.adoc[nng_aio_get_msg(3)],
+xref:nng_aio_get_output.3.adoc[nng_aio_get_output(3)],
+xref:nng_aio_result.3.adoc[nng_aio_result(3)],
+xref:nng_aio_set_input.3.adoc[nng_aio_set_input(3)],
+xref:nng_aio_set_iov.3.adoc[nng_aio_set_iov(3)],
+xref:nng_aio_set_msg.3.adoc[nng_aio_set_msg(3)],
+xref:nng_aio_wait.3.adoc[nng_aio_wait(3)],
+xref:nng_strerror.3.adoc[nng_strerror(3)],
+xref:nng_aio.5.adoc[nng_aio(5)],
+-->
+
+[aio_cancel]: nng_aio_cancel.md
+[nng_aio_alloc]: nng_aio_alloc.md
+[nng_aio_free]: nng_aio_free.md
+[nng_aio_set_timeout]: nng_aio_set_timeout.md
+[nng_aio_wait]: TODO.md