CHIP-0033: Add additional partial headers (#114)

* Add `add-additional-partial-headers` chip

* Assign #33 and open as a Draft

* Move CHIP-33 to Review

* Include config options and scoped harvester stats

* Move CHIP-33 to Last Call

* Update CHIPs/chip-0033.md

Co-authored-by: Starttoaster <b.butler@chia.net>

* Switch to `include_peer_ids_in_partials` option

* Move CHIP-33 to Review

* Move CHIP-33 to Last Call

* Move CHIP-33 to Final

---------

Co-authored-by: danieljperry <d.perry@chia.net>
Co-authored-by: Starttoaster <b.butler@chia.net>

CHIPs/chip-0033.md

@@ -0,0 +1,81 @@
+CHIP Number   | 0033
+:-------------|:----
+Title         | Add additional partial headers
+Description   | Add farmer and harvester peer id and version as well as harvester raw/effective capacties and plot count to partial headers
+Author        | [Felix Brucker](https://github.com/felixbrucker)
+Editor        | [Dan Perry](https://github.com/danieljperry)
+Comments-URI  | [CHIPs repo, PR #114](https://github.com/Chia-Network/chips/pull/114)
+Status        | Final
+Category      | Informational
+Sub-Category  | Informative
+Created       | 2024-03-29
+Requires      | None
+Replaces      | None
+Superseded-By | None
+
+## Abstract
+
+Add farmer and harvester peer id and version as well as harvester raw and effective capacities and plot count to the header of partial submit requests to pools, so that pools can correctly show farmers with their version and harvesters with their respective version, capacities and plot count.
+
+## Motivation
+
+Currently, a partial submitted to a pool contains the following information (among others):
+- the harvester peer id of the harvester who found the proof of space as part of the partial payload
+- the farmer version as part of the `user-agent` header
+
+This does not allow pools to correctly map a version to a harvester (as they only know the farmers version) and it does not allow them to map an identity to the farmer version. This means currently pools can not correctly show the version of their users' software.
+
+For example: A pool knows that harvester A is using a farmer with version x.y.z, but it does not know the version of harvester A. In addition it can not create a farmer entity to attach additional pool specific functionality (like a name, version and vendor, notification settings, connected harvesters, total space, etc.) to, as there is no id to link the x.y.z farmer version to.
+
+The following is an example of how a harvester overview in a pool looks like, when it includes the additional information. A farmer overview could look similar.
+![Harvester Overview](../assets/chip-felix-add-additional-partial-headers/harvester-overview.png)
+
+Implementing this change is very easy and has already been done, see below.
+
+## Backwards Compatibility
+
+This proposal only adds http request headers and is fully backwards compatible to the current implementation.
+
+## Rationale
+
+Adding the information to http headers allows for concise naming and easy retrieval of values without complex extraction (for example extracting the farmer version from the user agent header) without modifying the partial payload, which could cause problems.
+
+## Specification
+
+Introduce two new config fields:
+
+- `farmer.include_harvester_stats_in_partials`: boolean which defaults to `true`. This option determines whether harvester capacities and plot counts are included in partial submit headers.
+- `farmer.include_peer_ids_in_partials`: boolean which defaults to `true`. This option determines whether the farmer and harvester peer ids are included in partial submit headers.
+
+The following new headers will be included in partial submits:
+- `chia-farmer-version`: the full farmer version, same as already part of the user agent, for example: `2.2.1.giga35`
+- `chia-harvester-version`: the full harvester version, for example: `2.2.1-dr-0.15.0`
+
+The following headers are added when `farmer.include_peer_ids_in_partials` is `true`:
+- `chia-farmer-peer-id`: the farmer peer id (bytes32 as hex), for example: `ca93b47f157b4be9e91e88943a3c7ab9c2d6def0d7bd42dd0d468e54a14812f6`
+- `chia-harvester-peer-id`: the harvester peer id (bytes32 as hex), already part of the partial payload, included for consistency, for example: `f7959d25848dcccbf684f44951272d0a2323e1511f90e3f44651e1e10463eeb9`
+
+As well as the following optional headers, based on availability and whether the `farmer.include_harvester_stats_in_partials` is `true`:
+- `chia-harvester-raw-capacity-bytes`: the total raw capacity in bytes of this harvester and PlotNFT, for example: `1099511627776`
+- `chia-harvester-effective-capacity-bytes`: the total effective capacity in bytes of this harvester and PlotNFT, for example: `4398046511104`
+- `chia-harvester-plot-count`: the total plot count of this harvester and PlotNFT, for example: `1337`
+
+## Reference Implementation
+
+The current implementation in the form of a PR is available [here](https://github.com/Chia-Network/chia-blockchain/pull/17788)
+
+## Security
+
+This proposal only adds additional headers to the https secured pool partial requests.
+
+## Additional Assets
+
+- [Harvester Overview](../assets/chip-felix-add-additional-partial-headers/harvester-overview.png)
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
+
+
+
+