NetworkPacketTrace

NetworkPacketTrace[expr] evaluates expr and returns information on network packets transmitted or received through all network interfaces during the evaluation.

• NetworkPacketTrace[expr, service] records only packets associated with the specified network service.
• NetworkPacketTrace[expr, port] records only packets associated with the specified port.
• NetworkPacketTrace[expr, {port1, port2, ...}] records only packets associated with any of the ports.
• NetworkPacketTrace[expr, spec] records only packets matching the specification spec.

Examples

Trace network packets during a URL fetch:

NetworkPacketTrace[URLRead["https://www.wolfram.com"]]

Trace only HTTP traffic:

NetworkPacketTrace[URLRead["https://www.wolfram.com"], "HTTP"]

Trace packets on a specific port:

NetworkPacketTrace[URLRead["https://www.wolfram.com"], 443]

Please visit the official Wolfram Language Reference for more details.