Repeater

The Repeater is used for replaying historical requests or manually modifying and resending them. It's an important tool for security testing and API debugging.

Overview

• Request Replay: Quick replay based on existing requests
• Raw Editing: Directly edit HTTP raw messages
• Structured Editing: Visually edit request parts
• Tab Management: Save request tabs for repeated testing
• Replay History: Auto-record request and response snapshots

Interface Layout

The Repeater uses a multi-tab layout, with each tab containing independent request editing and response viewing areas:

flowchart LR
    Tab[Tab Bar] --> Editor[Request Editor]
    Tab --> Response[Response Display]
    Editor --> Send[Send Request]
    Send --> Response

Send to Repeater

From Forwarder

1. Select request in Forwarder list
2. Right-click → Send to Repeater
3. Request loads into new tab

From Fuzzer

1. Select request in Fuzzer results
2. Right-click → Send to Repeater

Manual Creation

1. Click + button in tab bar
2. Manually enter request or paste raw HTTP message

Edit Request

Raw Mode

Directly edit HTTP raw message:

GET /api/users HTTP/1.1
Host: example.com
Authorization: Bearer token123
Accept: application/json

Structured Mode

Visually edit each part:

Part	Editable Content
Request Line	Method, Path, Protocol Version
Headers	Add, Modify, Delete headers
Body	JSON, Form, Raw content
Connection	Host, Port, TLS toggle

Send Request

Basic Send

1. Edit request content
2. Click Send button (or Ctrl/⌘ + Enter)
3. Response displays in right panel

Connection Configuration

Option	Description
Host	Target server address
Port	Target server port
TLS	Whether to use HTTPS

TIP

Connection config overrides Host header value, used for testing different environments.

Response View

Response Overview

• Status code
• Response size
• Response time

Response Headers

Complete response header list

Response Body

Multiple view formats:

• Pretty: Formatted display (JSON, XML, etc.)
• Raw: Original content
• Hex: Hexadecimal view

Tab Management

Save Tab

1. Edit request
2. Click Save button (or Ctrl/⌘ + S)
3. Enter tab name

Manage Tabs

Action	Description
Rename	Right-click tab → Rename
Delete	Right-click tab → Delete
Copy	Right-click tab → Copy
Reorder	Drag tab to reorder

Replay History

Each request send is auto-recorded:

• Send timestamp
• Request content snapshot
• Response result

History allows tracing the testing process and comparing response differences across request variants.

Request Export

Export Repeater requests to file:

1. Right-click in the tab → Export
2. Choose save path
3. Request content saved as raw HTTP message format

Use Cases

API Debugging

1. Capture API request from Forwarder
2. Send to Repeater
3. Modify request parameters
4. Resend, observe response
5. Repeat until correct

Authentication Testing

1. Capture authenticated request
2. Modify Authorization header
3. Test different token permissions
4. Verify authentication robustness

Parameter Tampering

1. Capture request with business parameters
2. Modify values (user ID, amount, status, etc.)
3. Observe response changes
4. Identify privilege escalation or logic flaws

Environment Comparison

1. Configure different Host values across tabs
2. Compare API response differences between environments
3. Verify environment configuration consistency

Keyboard Shortcuts

Shortcut	Function
Ctrl/⌘ + Enter	Send request
Ctrl/⌘ + S	Save tab
Ctrl/⌘ + N	New tab
Ctrl/⌘ + W	Close current tab