[−][src]Module tower_grpc::metadata

The metadata module contains data structures and utilities for handling gRPC custom metadata.

Modules

The metadata::errors module contains types for errors that can occur while handling gRPC custom metadata.

GetAll	A view to all values stored in a single entry.
Iter	`MetadataMap` entry iterator.
Keys	An iterator over `MetadataMap` keys.
MetadataKey	Represents a custom metadata field name.
MetadataMap	A set of gRPC custom metadata entries.
MetadataValue	Represents a custom metadata field value.
OccupiedEntry	A view into a single occupied location in a `MetadataMap`.
VacantEntry	A view into a single empty location in a `MetadataMap`.
ValueDrain	A drain iterator of all values associated with a single metadata key.
ValueIter	An iterator of all values associated with a single metadata key.
Values	`MetadataMap` value iterator.

Ascii
Binary
Entry	A view into a single location in a `MetadataMap`, which may be vacant or occupied.
KeyAndMutValueRef	Reference to a key and an associated value in a `MetadataMap`. It can point to either an ascii or a binary ("*-bin") key.
KeyAndValueRef	Reference to a key and an associated value in a `MetadataMap`. It can point to either an ascii or a binary ("*-bin") key.
KeyRef	Reference to a key in a `MetadataMap`. It can point to either an ascii or a binary ("*-bin") key.
ValueRef	Reference to a value in a `MetadataMap`. It can point to either an ascii or a binary ("*-bin" key) value.
ValueRefMut	Reference to a value in a `MetadataMap`. It can point to either an ascii or a binary ("*-bin" key) value.