[#OSSL_HTTP_REQ_CTX_nbio_d2i]
= OSSL_HTTP_REQ_CTX_nbio_d2i
:mrdocs:

Exchange an HTTP request non‐blockingly and decode the response body as ASN.1.

== Synopsis

Declared in `<openssl/http.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_HTTP_REQ_CTX_nbio_d2i(
    xref:OSSL_HTTP_REQ_CTX.adoc[OSSL_HTTP_REQ_CTX]* rctx,
    xref:ASN1_VALUE.adoc[ASN1_VALUE]** pval,
    xref:ASN1_ITEM.adoc[ASN1_ITEM] const* it);
----

== Return Value

1 on completion with success, 0 on failure, or ‐1 if the I/O would block (retry later).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *rctx*
| Request context prepared with headers/body; may need multiple calls when BIOs would block.
| *pval*
| Destination for the decoded ASN.1 value (type described by `it).`
| *it*
| ASN.1 item descriptor used to decode the HTTP response body.
|===


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