public abstract class DeserializationContext : objectProvides access to the payload being deserialized when deserializing messages.
Namespace
Grpc.CoreAssembly
Grpc.Core.Api.dll
Properties
PayloadLength
public abstract int PayloadLength { get; }Get the total length of the payload in bytes.
| Property Value | |
|---|---|
| Type | Description |
Int32 |
|
Methods
PayloadAsNewBuffer()
public virtual byte[] PayloadAsNewBuffer()Gets the entire payload as a newly allocated byte array.
Once the byte array is returned, the byte array becomes owned by the caller and won't be ever accessed or reused by gRPC again.
NOTE: Obtaining the buffer as a newly allocated byte array is the simplest way of accessing the payload,
but it can have important consequences in high-performance scenarios.
In particular, using this method usually requires copying of the entire buffer one extra time.
Also, allocating a new buffer each time can put excessive pressure on GC, especially if
the payload is more than 86700 bytes large (which means the newly allocated buffer will be placed in LOH,
and LOH object can only be garbage collected via a full ("stop the world") GC run).
NOTE: Deserializers are expected not to call this method (or other payload accessor methods) more than once per received message
(as there is no practical reason for doing so) and DeserializationContext implementations are free to assume so.
| Returns | |
|---|---|
| Type | Description |
Byte[] |
byte array containing the entire payload. |
PayloadAsReadOnlySequence()
public virtual Buffers.ReadOnlySequence<byte> PayloadAsReadOnlySequence()Gets the entire payload as a ReadOnlySequence.
The ReadOnlySequence is only valid for the duration of the deserializer routine and the caller must not access it after the deserializer returns.
Using the read only sequence is the most efficient way to access the message payload. Where possible it allows directly
accessing the received payload without needing to perform any buffer copying or buffer allocations.
NOTE: When using this method, it is recommended to use C# 7.2 compiler to make it more useful (using Span type directly from your code requires C# 7.2)."
NOTE: Deserializers are expected not to call this method (or other payload accessor methods) more than once per received message
(as there is no practical reason for doing so) and DeserializationContext implementations are free to assume so.
| Returns | |
|---|---|
| Type | Description |
Buffers.ReadOnlySequence<Byte> |
read only sequence containing the entire payload. |