# hashrpc

**Repository Path**: mirrors_mikeal/hashrpc

## Basic Information

- **Project Name**: hashrpc
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-03-10
- **Last Updated**: 2025-09-27

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# hashrpc

Hashrpc is a very simple stream protocol for hash based messages.

There are only three message types.

* get block
* send block
* control

All messages, including control messages, are hash addressed.

All hash addresses are CIDs.

# Protocol

Single byte Uint8 for each message type:

* get block `1`
* send block `2`
* control `3`

This specification does not define what a control message is or how it is used, that's up to the
application. Nor does this specification define any size limitation on blocks, a "block" could be an entire
CAR file reqested by its CID (once we have a spec for CAR CIDs).

All message types are bi-directional, any node can send any message type at any time.

## get block

```
[ 1, length, CID ]
```

## send block

```
[ 2, CIDLength, blockLength, CID, block ]
```

## control

```
[ 3, CIDLength, blockLength, CID, block ]
```