# OtlpProtocol

- Kind: `enum`
- Package: [Aspire.Hosting](/reference/api/csharp/aspire.hosting.md)
- Version: `13.3.0`
- Namespace: `Aspire.Hosting`
- Target framework: `net8.0`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/bd20f904cde09ecb9c9ae5116a6f13614bf2d7c2/src/Aspire.Hosting/OtlpProtocol.cs)

Protocols available for OTLP exporters.

## Definition

```csharp
namespace Aspire.Hosting;

public enum OtlpProtocol
```

## Enum Members

| Name | Value | Description |
| --- | --- | --- |
| Grpc | 0 | A gRPC-based OTLP exporter. |
| HttpProtobuf | 1 | Http/Protobuf-based OTLP exporter. |
| HttpJson | 2 | Http/JSON-based OTLP exporter. |