- Add dtlsReadBufferSize constant (8KB) matching pion/dtls limits
- Wrap DTLS sessions with bufio.Reader in client and server code
- Update tests to use buffered readers for datagram-based connections
- All tests passing successfully
Co-authored-by: dalbodeule <11470513+dalbodeule@users.noreply.github.com>
- Refactored `Decode` to use `io.ReadFull` for accurate length-prefix and payload reading.
- Simplified logic to avoid mismatched length issues and clarified comments for maintainability.
- Modified protobufCodec.Encode() to combine length prefix and protobuf data into a single buffer and write in one call
- Modified protobufCodec.Decode() to read entire datagram in a single Read call
- Added comprehensive tests for datagram-based codec behavior
- Fixes issue #17: proto: cannot parse invalid wire-format data error in DTLS
Co-authored-by: dalbodeule <11470513+dalbodeule@users.noreply.github.com>
- Updated `Decode` to wrap `io.Reader` in a sufficiently large `bufio.Reader` when handling DTLS sessions, preventing "buffer is too small" errors.
- Enhanced length-prefix reading logic to ensure safe handling of Protobuf envelopes during DTLS stream processing.
- Clarified comments and fixed minor formatting inconsistencies in Protobuf codec documentation.
- Added safeguards to restrict HTTP body and stream payload sizes to 4KiB (`StreamChunkSize`) in the Protobuf codec.
- Updated client logic to apply consistent limits for streaming and non-streaming scenarios.
- Improved error handling with clear messages for oversized payloads.
- Added support for `StreamOpen`, `StreamData`, `StreamClose`, and `StreamAck` types in the Protobuf codec.
- Defined new pseudo-header constants for HTTP-over-stream tunneling.
- Introduced `StreamChunkSize` constant for MTU-safe payload sizes (4 KiB).
- Updated encoding and decoding logic to handle stream-based types seamlessly.
- Defined `hopgate_stream.proto` with message definitions for stream-based DTLS tunneling, including `Request`, `Response`, `StreamOpen`, `StreamData`, `StreamAck`, and `StreamClose`.
- Added `Envelope` container for top-level message encapsulation.
- Integrated Protobuf code generation into the `Makefile` using `protoc` with `protoc-gen-go`.
- Generated Go types under `internal/protocol/pb`.
- Introduced `WireCodec` interface in `internal/protocol/codec.go` to abstract serialization/deserialization logic.
- Updated server and client to use `DefaultCodec`, replacing direct JSON encoding/decoding.
- Eliminated `bufio.Reader` from session handling, as `DefaultCodec` manages buffering for DTLS sessions.
- Marked related protocol tasks in `progress.md` as complete.
- Replaced single-envelope JSON model with a stream/frame-based protocol using `StreamOpen`, `StreamData`, and `StreamClose` for chunked transmission.
- Added application-level ARQ with selective retransmission (`StreamAck`) for reliability over DTLS/UDP.
- Defined MTU-safe chunk sizes and sequence-based flow control to handle large HTTP bodies effectively.
- Updated `internal/protocol` for structured stream message handling, including ACK/NACK support.
- Documented potential transition to binary serialization for performance optimization.
- Refactored HTTP tunneling protocol to use `protocol.Envelope` for better extensibility.
- Implemented support for message types including HTTP requests, stream handling, and responses.
- Added common security headers like HSTS and X-Forwarded-For processing for improved security and identity handling.
- Introduced GitHub Actions workflow to build and publish Docker images to GHCR.
- Added new protocol structures for stream-based communication in anticipation of future WebSocket/TCP tunneling.
- Updated `go.sum` to remove unused dependencies and reflect new changes.
