Indus HTTP Replay

Replay real HTTP API requests from raw text, curl, logs, HAR files, and .indus.http blocks directly inside VS Code.

Why Indus HTTP Replay

• Replay requests without switching to Postman or curl terminal loops
• Compare two environments side-by-side with semantic JSON diff
• Use one flow across source code, logs, HAR, and .indus.http files
• Keep traffic execution isolated in a worker process for extension safety

Visual Workflows

1) Input Sources

Open Diagram

2) Replay Pipeline

Open Diagram

3) Diff Analysis

Open Diagram

4) Release / Publish Workflow

Open Diagram

5) UML Sequence Diagram

Open Diagram

Feature Set

• Multi-format request extraction:
  • raw HTTP
  • curl commands
  • log lines
  • HAR requests
  • .indus.http blocks with CodeLens run buttons
• Parallel replay across multiple configured targets
• Semantic JSON diff with ignore paths
• WebView inspector tabs for body, headers, raw, and diff
• Replay history panel for quick debugging loops
• Header masking for sensitive values

Install

1. Open the VS Code Marketplace page: hari7261.indus-http-replay
2. Click Install.
3. Reload VS Code if prompted.

Quick Start

1. Configure at least one target in settings.json.
2. Select any supported HTTP request text.
3. Run Indus: Replay HTTP Request.
4. Review target responses in the Replay panel.

Example targets:

"indusHttpReplay.targets": [
  "http://localhost:8080",
  "http://localhost:8081"
]

Commands

Configuration

{
  "indusHttpReplay.targets": ["http://localhost:8080"],
  "indusHttpReplay.defaultHeaders": {
    "x-request-source": "indus-replay"
  },
  "indusHttpReplay.timeoutMs": 30000,
  "indusHttpReplay.followRedirects": true,
  "indusHttpReplay.ignoreDiffPaths": [
    "$.timestamp",
    "$.traceId",
    "$.meta.requestId"
  ],
  "indusHttpReplay.allowInsecureTls": false
}

Usage Examples

Replay from curl:

curl -X POST http://localhost:8080/api/users \
  -H "Authorization: Bearer token" \
  -H "Content-Type: application/json" \
  -d '{"name":"hari","role":"admin"}'

Replay from .indus.http:

### Create user
POST /api/users
Content-Type: application/json

{"name":"hari","role":"admin"}

Architecture

VS Code commands + CodeLens -> parser/extractor -> worker pool -> target APIs -> Replay panel + diff + history

The extension host coordinates UI and orchestration, while HTTP execution is handled by a dedicated worker process.

Security Notes

• Sensitive headers are masked in UI output
• Replays happen only on explicit user action
• No telemetry and no cloud sync

Development

npm install
npm run compile
npm run package

Publish Checklist

1. Update version in package.json
2. Package with vsce package
3. Validate README.md diagram rendering on GitHub
4. Push to GitHub
5. Publish to Marketplace

License

MIT