[#node-TxDownloadManagerImpl-Find1P1CPackage]
= xref:node.adoc[node]::xref:node/TxDownloadManagerImpl.adoc[TxDownloadManagerImpl]::Find1P1CPackage
:relfileprefix: ../../
:mrdocs:

Look for a child of this transaction in the orphanage to form a 1‐parent‐1‐child package, skipping any combinations that have already been tried. Return the resulting package along with the senders of its respective transactions, or std::nullopt if no package is found.

== Synopsis

Declared in `<node/txdownloadman_impl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<PackageToValidate>
Find1P1CPackage(
    xref:CTransactionRef.adoc[CTransactionRef] const& ptx,
    xref:NodeId-08.adoc[NodeId] nodeid);
----

== Return Value

The formed package, or std::nullopt if no untried package is found.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ptx*
| The parent transaction to find a child for.
| *nodeid*
| The peer that provided `ptx.`
|===


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