H2SPEC Compliance Status

Current compliance: 145/146 tests passing (99.3%)

• 145 tests passing
• 1 test failing (5.1.1.2 - stream identifier validation)
• Total: 145 of 146 HTTP/2 protocol requirements satisfied

✅ Completed Features

1. Starting HTTP/2

• Sends a client connection preface

2. Streams and Multiplexing

• Sends a PRIORITY frame on idle stream
• Sends a WINDOW_UPDATE frame on half-closed (remote) stream
• Sends a PRIORITY frame on half-closed (remote) stream
• Sends a RST_STREAM frame on half-closed (remote) stream
• Sends a PRIORITY frame on closed stream

3. Frame Definitions

3.1. DATA

• Sends a DATA frame
• Sends multiple DATA frames
• Sends a DATA frame with padding

3.2. HEADERS

• Sends a HEADERS frame
• Sends a HEADERS frame with padding
• Sends a HEADERS frame with priority

3.3. PRIORITY

• Sends a PRIORITY frame with priority 1
• Sends a PRIORITY frame with priority 256
• Sends a PRIORITY frame with stream dependency
• Sends a PRIORITY frame with exclusive
• Sends a PRIORITY frame for an idle stream, then send a HEADER frame for a lower stream ID

3.4. RST_STREAM

• Sends a RST_STREAM frame

3.5. SETTINGS

• Sends a SETTINGS frame

3.7. PING

• Sends a PING frame

3.8. GOAWAY

• Sends a GOAWAY frame

3.9. WINDOW_UPDATE

• Sends a WINDOW_UPDATE frame with stream ID 0
• Sends a WINDOW_UPDATE frame with stream ID 1

3.10. CONTINUATION

• Sends a CONTINUATION frame
• Sends multiple CONTINUATION frames

4. HTTP Message Exchanges

• Sends a GET request
• Sends a HEAD request
• Sends a POST request
• Sends a POST request with trailers

5. HPACK

• Sends a indexed header field representation
• Sends a literal header field with incremental indexing - indexed name
• Sends a literal header field with incremental indexing - indexed name (with Huffman coding)
• Sends a literal header field with incremental indexing - new name
• Sends a literal header field with incremental indexing - new name (with Huffman coding)
• Sends a literal header field without indexing - indexed name
• Sends a literal header field without indexing - indexed name (with Huffman coding)
• Sends a literal header field without indexing - new name
• Sends a literal header field without indexing - new name (huffman encoded)
• Sends a literal header field never indexed - indexed name
• Sends a literal header field never indexed - indexed name (huffman encoded)
• Sends a literal header field never indexed - new name
• Sends a literal header field never indexed - new name (huffman encoded)
• Sends a dynamic table size update
• Sends multiple dynamic table size update

✅ HTTP/2 Protocol Tests (All Passing)

3. Starting HTTP/2

• Sends client connection preface
• Sends invalid connection preface

4. HTTP Frames

• Sends a frame with unknown type
• Sends a frame with undefined flag
• Sends a frame with reserved field bit
• Sends a DATA frame with 2^14 octets in length
• Sends a large size DATA frame that exceeds the SETTINGS_MAX_FRAME_SIZE
• Sends a large size HEADERS frame that exceeds the SETTINGS_MAX_FRAME_SIZE
• Sends invalid header block fragment
• Sends a PRIORITY frame while sending the header blocks
• Sends a HEADERS frame to another stream while sending the header blocks

5. Streams and Multiplexing

• All stream state tests
• Stream identifier tests
• Stream concurrency tests
• Stream priority and dependency tests
• Error handling tests
• Extension frame tests

6. Frame Definitions

• All DATA frame validation tests
• All HEADERS frame validation tests
• All PRIORITY frame validation tests
• All RST_STREAM frame validation tests
• All SETTINGS frame validation tests
• All PING frame validation tests
• All GOAWAY frame validation tests
• All WINDOW_UPDATE frame validation tests
• All CONTINUATION frame validation tests

7. Error Codes

• Sends a GOAWAY frame with unknown error code
• Sends a RST_STREAM frame with unknown error code

8. HTTP Message Exchanges

• Most HTTP request/response exchange tests
• All header field validation tests
• All pseudo-header field tests
• All connection-specific header field tests
• All request pseudo-header field tests
• All malformed request tests
• Server push tests

✅ HPACK Tests (All Passing)

2. Compression Process Overview

• Sends a indexed header field representation with invalid index
• Sends a literal header field representation with invalid index

4. Dynamic Table Management

• Sends a dynamic table size update at the end of header block

5. Primitive Type Representations

• Sends a Huffman-encoded string literal representation with padding longer than 7 bits
• Sends a Huffman-encoded string literal representation padded by zero
• Sends a Huffman-encoded string literal representation containing the EOS symbol

6. Binary Format

• Sends a indexed header field representation with index 0
• Sends a dynamic table size update larger than the value of SETTINGS_HEADER_TABLE_SIZE

🔧 Test Configuration

Test 5.1.1.2: Stream identifier validation failure

• Status: Failing (1 of 146 tests)
• Issue: Server responds with DATA frame instead of GOAWAY with PROTOCOL_ERROR when receiving stream ID numerically smaller than previous
• Expected: GOAWAY Frame (Error Code: PROTOCOL_ERROR) + Connection closed
• Actual: DATA Frame (length:185, flags:0x01, stream_id:5)
• Impact: Minor protocol violation in stream ID ordering validation

✅ Protocol Compliance Summary

The HT2 server achieves 99.3% compliance with the HTTP/2 specification:

• 145 h2spec tests pass in both CI and local environments
• 1 test fails (5.1.1.2 - stream identifier ordering validation)
• Total: 145 of 146 HTTP/2 protocol requirements satisfied

This represents near-complete HTTP/2 protocol compliance suitable for most production use cases.