NtReplyWaitReceivePort - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTLPCAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
NtReplyWaitReceivePort(
    _In_ HANDLE PortHandle,
    _Out_opt_ PVOID *PortContext,
    _In_reads_bytes_opt_(ReplyMessage->u1.s1.TotalLength) PPORT_MESSAGE ReplyMessage,
    _Out_ PPORT_MESSAGE ReceiveMessage
    );

#endif

View code on GitHub
#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwReplyWaitReceivePort(
    _In_ HANDLE PortHandle,
    _Out_opt_ PVOID *PortContext,
    _In_reads_bytes_opt_(ReplyMessage->u1.s1.TotalLength) PPORT_MESSAGE ReplyMessage,
    _Out_ PPORT_MESSAGE ReceiveMessage
    );

#endif

View code on GitHub

NtReplyWaitReceivePort is typically used by LPC server process for receive LPC requests incoming from client process.

PortHandle

HANDLE to Port Object returned by

ReceivePortHandle

Reply

If other side waiting for reply message, you can send it by specifying LPC Message Buffer as this parameter.

IncomingRequest

Pointer to user's allocated buffer receiving request data. Received data starts with

Documented by

See also

Edit description on GitHub