[#bio_poll_descriptor_st-_01record]
= xref:bio_poll_descriptor_st.adoc[bio_poll_descriptor_st]::Unnamed union
:relfileprefix: ../
:mrdocs:

Active poll target; which arm is valid depends on `type.`

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
union Unnamed union;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:bio_poll_descriptor_st/_01record/custom.adoc[`custom`] [.small]#[variant member]#
| Application‐defined pointer for custom poll descriptor types.
| xref:bio_poll_descriptor_st/_01record/custom_ui.adoc[`custom_ui`] [.small]#[variant member]#
| Application‐defined integer for custom poll descriptor types.
| xref:bio_poll_descriptor_st/_01record/fd.adoc[`fd`] [.small]#[variant member]#
| Socket or file descriptor when `type` is BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD.
| xref:bio_poll_descriptor_st/_01record/ssl.adoc[`ssl`] [.small]#[variant member]#
| SSL object when `type` is BIO_POLL_DESCRIPTOR_TYPE_SSL.
|===



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