user-book: add RPC section

books/user/src/SUMMARY.md

@@ -22,7 +22,10 @@
 - [Deployment](deployment/intro.md)
     - [systemd](deployment/systemd.md)
 
+- [RPC](rpc.md)
+
 - [Platform support](platform.md)
+
 - [License](license.md)
 
 <!-- TODO: - [Glossary](glossary/intro.md) or maybe a wiki? -->

books/user/src/introduction.md

@@ -91,7 +91,7 @@ The database `cuprated` generates and uses cannot directly be used by `monerod`
 ## Can I connect a wallet to `cuprated`?
 Not yet.
 
-Wallets require the [daemon RPC API](https://docs.getmonero.org/rpc-library/monerod-rpc). This is actively being worked on to be backwards compatible with `monerod`, although this is not yet available.
+Wallets require the [daemon RPC API](https://docs.getmonero.org/rpc-library/monerod-rpc). This is actively being worked on to be backwards compatible with `monerod`, see the [RPC section](rpc.md) for more information.
 
 ## Can `cuprated` be used with an anonymity network like Tor?
 Not yet (directly).

books/user/src/rpc.md

@@ -0,0 +1,99 @@
+# RPC
+`monerod`'s daemon RPC has 3 kinds of interfaces:
+1. [JSON-RPC 2.0](https://www.jsonrpc.org) methods called at the `/json_rpc` endpoint, e.g. [`get_block`](https://www.getmonero.org/resources/developer-guides/daemon-rpc.html#get_block)
+1. JSON endpoints, e.g. [`/get_height`](https://www.getmonero.org/resources/developer-guides/daemon-rpc.html#get_height)
+1. Binary endpoints, e.g. [`/get_blocks.bin`](https://www.getmonero.org/resources/developer-guides/daemon-rpc.html#get_blocksbin)
+
+<!-- TODO: explain the binary format -->
+
+`cuprated`'s RPC aims to mirror `monerod`'s as much as it can. The end-goal is compatibility with common use-cases such as wallet software.
+
+This section contains the development status of endpoints/methods in `cuprated`.
+
+| Status | Meaning |
+|--------|---------|
+| 🟢     | Enabled and tested
+| 🟣     | Enabled but has differences waiting to be resolved
+| 🟠     | Enabled but not tested
+| ⚪     | Not enabled yet
+| ⚫     | Not planned to be supported
+
+<!-- NOTE: Sort methods/endpoints A-Z -->
+
+## JSON-RPC methods
+| Method                         | Status | Notes   |
+|--------------------------------|--------|---------|
+| `add_aux_pow`                  | ⚪     |
+| `banned`                       | ⚪     |
+| `calc_pow`                     | ⚪     |
+| `flush_cache`                  | ⚫     | `cuprated` does not require this method
+| `flush_txpool`                 | ⚪     |
+| `generateblocks`               | ⚪     |
+| `get_alternate_chains`         | ⚪     |
+| `get_bans`                     | ⚪     |
+| `get_block`                    | ⚪     |
+| `get_block_count`              | ⚪     |
+| `get_block_header_by_hash`     | ⚪     |
+| `get_block_header_by_height`   | ⚪     |
+| `get_block_headers_range`      | ⚪     |
+| `get_block_template`           | ⚪     |
+| `get_coinbase_tx_sum`          | ⚪     |
+| `get_connections`              | ⚪     |
+| `get_fee_estimate`             | ⚪     |
+| `get_info`                     | ⚪     |
+| `get_last_block_header`        | ⚪     |
+| `get_miner_data`               | ⚪     |
+| `get_output_distribution`      | ⚪     |
+| `get_output_histogram`         | ⚪     |
+| `get_tx_ids_loose`             | ⚪     | Not implemented in `monerod` release branch yet
+| `get_txpool_backlog`           | ⚪     |
+| `get_version`                  | ⚪     |
+| `hard_fork_info`               | ⚪     |
+| `on_get_block_hash`            | ⚪     |
+| `prune_blockchain`             | ⚫     |
+| `relay_tx`                     | ⚪     |
+| `set_bans`                     | ⚪     |
+| `submit_block`                 | ⚪     |
+| `sync_info`                    | ⚪     |
+
+## JSON endpoints
+| Endpoint                       | Status | Notes   |
+|--------------------------------|--------|---------|
+| `/get_alt_blocks_hashes`       | ⚪     |
+| `/get_height`                  | ⚪     |
+| `/get_limit`                   | ⚪     |
+| `/get_net_stats`               | ⚪     |
+| `/get_outs`                    | ⚪     |
+| `/get_peer_list`               | ⚪     |
+| `/get_public_nodes`            | ⚪     |
+| `/get_transaction_pool`        | ⚪     |
+| `/get_transaction_pool_hashes` | ⚪     |
+| `/get_transaction_pool_stats`  | ⚪     |
+| `/get_transactions`            | ⚪     |
+| `/in_peers`                    | ⚪     |
+| `/is_key_image_spent`          | ⚪     |
+| `/mining_status`               | ⚫     | `cuprated` does not mine
+| `/out_peers`                   | ⚪     |
+| `/pop_blocks`                  | ⚪     |
+| `/save_bc`                     | ⚪     |
+| `/send_raw_transaction`        | ⚪     |
+| `/set_bootstrap_daemon`        | ⚪     | Requires bootstrap implementation
+| `/set_limit`                   | ⚪     |
+| `/set_log_categories`          | ⚪     | Could be re-purposed to use `tracing` filters
+| `/set_log_hash_rate`           | ⚫     | `cuprated` does not mine
+| `/set_log_level`               | ⚪     | Will use `tracing` levels
+| `/start_mining`                | ⚫     | `cuprated` does not mine
+| `/stop_daemon`                 | ⚪     |
+| `/stop_mining`                 | ⚫     | `cuprated` does not mine
+| `/update`                      | ⚫     |
+
+## Binary endpoints
+| Endpoint                           | Status | Notes   |
+|------------------------------------|--------|---------|
+| `/get_blocks.bin`                  | ⚪     |
+| `/get_blocks_by_height.bin`        | ⚪     |
+| `/get_hashes.bin`                  | ⚪     |
+| `/get_output_distribution.bin`     | ⚪     |
+| `/get_output_indexes.bin`          | ⚪     |
+| `/get_outs.bin`                    | ⚪     |
+| `/get_transaction_pool_hashes.bin` | ⚪     |