Server-to-Server Transfer (SFXP)

SFXP lets two remote servers transfer files directly, without downloading to your local machine first.

Why SFXP?

Traditional method:

Server A → Download to local → Upload to Server B

Problems: limited by local bandwidth, uses local disk space, takes twice the time.

SFXP method:

Server A ────direct────→ Server B

Advantages: uses high-speed server network, no local resource usage, maximum speed.

Usage

1. Open SFXP Panel

Click the SFXP button in the sidebar.

2. Select Source and Target

• Source server: select server and file path
• Target server: select server and destination path

3. Transfer

Select files/folders and click Transfer.

Transfer Modes

MyShell Terminal supports two modes with automatic selection:

Direct Mode

When servers can reach each other, uses rsync direct transfer:

• Fastest, uses server-to-server network
• Auto-injects temporary keys for authentication
• Keys are cleaned up after transfer

Relay Mode

When servers can't connect directly, MyShell Terminal relays data:

• Data passes through the client in memory
• No server-to-server network required
• Ensures transfer completes in any network environment

Smart Switching

The system automatically detects network connectivity and prefers direct mode, falling back to relay mode when needed.

Smart Routing & Transfer Assurance

SFXP finds the fastest viable path between the two servers on its own:

• Connectivity from source to target is probed automatically; the intranet address is preferred (fastest), with the public address as fallback
• Probing requires no extra tools on the target machine

Transfer Reliability

• Direct mode requires rsync on both source and target. A missing rsync is detected upfront with install guidance, instead of the transfer failing midway
• Partial files left behind by an interrupted transfer are cleaned automatically at the next app launch
• Full transfer logging is kept for traceability

Security

• All transfers use SSH encrypted channels
• Temporary keys are removed immediately after transfer
• Orphaned resources are cleaned up on next app launch