# OxiBrowser Codebase Completion — Findings
## Summary
Completed the OxiBrowser Rust codebase at `/Volumes/MERCURY/PROJECTS/oxibrowser/` by creating all missing files. The workspace now compiles successfully (`cargo check` passes with zero errors).
## Files Created
### 1. CDP Domain Handlers (`crates/oxibrowser-cdp/src/domains/`)
| `browser.rs` | `Browser.getVersion`, `Browser.getWindowForTarget`, `Browser.close` |
| `dom.rs` | `DOM.getDocument`, `DOM.querySelector`, `DOM.querySelectorAll`, `DOM.getOuterHTML`, `DOM.describeNode`, `DOM.resolveNode` |
| `network.rs` | `Network.enable`, `Network.disable`, `Network.loadResource`, `Network.getResponseBody` |
| `page.rs` | `Page.enable`, `Page.disable`, `Page.navigate`, `Page.reload`, `Page.getFrameTree`, `Page.getFrameMetrics`, `Page.captureScreenshot`, `Page.printToPDF` |
| `runtime.rs` | `Runtime.enable`, `Runtime.disable`, `Runtime.evaluate`, `Runtime.callFunctionOn`, `Runtime.getProperties` |
| `target.rs` | `Target.setAutoAttach`, `Target.attachToTarget`, `Target.detachFromTarget`, `Target.createTarget`, `Target.closeTarget`, `Target.getTargetInfo`, `Target.getTargets`, `Target.setDiscoverTargets` |
Each file exports a `handle(method: &str, params: Option<serde_json::Value>) -> DomainResult` function that dispatches to specific method handlers and returns proper JSON results.
### 2. CDP Server (`crates/oxibrowser-cdp/src/server.rs`)
- `CdpServer` struct that listens on a TCP port via `tokio::net::TcpListener`
- HTTP endpoints: `GET /json/version` and `GET /json` (returns target list)
- Uses `hyper` 1.x with `hyper_util::rt::TokioIo` bridge for tokio compatibility
- WebSocket endpoint at `/ws` (placeholder — returns 400 without WS client)
- Graceful shutdown via `broadcast::Sender` channel
### 3. CDP Session (`crates/oxibrowser-cdp/src/session.rs`)
- `CdpSession` wraps a single `WebSocketStream` connection
- Manages session ID and target ID
- Message dispatch loop: read JSON → parse `CdpRequest` → dispatch to `domains::dispatch` → send `CdpResponse`
- Handles Ping/Pong, Close frames
- Sends CDP events via `send_event()` method
### 4. Binary Crate (`crates/oxibrowser/`)
- `Cargo.toml` with dependencies on `oxibrowser-core`, `oxibrowser-cdp`, `clap`, `tokio`, `tracing-subscriber`
- `src/lib.rs` re-exports core types (`Browser`, `BrowserConfig`, `Result`)
- `src/main.rs` CLI with clap subcommands:
- `oxibrowser fetch <url>` — fetch and dump HTML/markdown/text
- `oxibrowser serve --host <host> --port <port>` — start CDP server
- `oxibrowser version` — print version
## Pre-existing Issues Fixed
### html5ever 0.29 API Compatibility (`crates/oxibrowser-webapi/src/dom/document.rs`)
The existing `Document::parse()` implementation was written for an older html5ever API. Fixed to work with html5ever 0.29:
1. **TreeSink method signatures**: Changed from `&mut self` to `&self` with interior mutability (`Cell`, `RefCell`)
2. **`parse_document` API**: Now takes 2 args (sink, opts), feeds input via `TendrilSink::one()`
3. **Missing trait methods**: Added `parse_error`, `create_pi`, `get_template_contents`, `ElemName` associated type
4. **Removed non-trait methods**: `create_doctype`, `remove_from_dom` (not in html5ever 0.29 TreeSink)
5. **`elem_name` lifetime**: Used `Box::leak` for `QualName` storage (following html5ever's noop-tree-builder pattern)
6. **`append_doctype_to_document`**: Now takes 3 tendril args (name, public, system) per updated trait
### Session Bug (`crates/oxibrowser-core/src/session.rs`)
Fixed `go_back()` passing `&Url` where `Url` was expected — added `.clone()`.
### Removed `NodeData` export
`NodeData` type was referenced but never defined in `node.rs` — removed from re-exports in `dom.rs`.
## Build Status
```
cargo check — 0 errors, only pre-existing warnings in oxibrowser-core
```
All new files compile cleanly with zero warnings.