ByeByeDPI is a network utility designed to circumvent regional blocking and censorship by evading deep packet inspection. It functions as a traffic tunnel and local SOCKS5 proxy server that modifies network packets to prevent filters from identifying and blocking specific content.
The project employs a user-mode network stack to manipulate traffic at the application level. It achieves bypass capabilities through TCP packet fragmentation and the modification of HTTP request header formatting and case sensitivity.
The system includes application-level tunneling control to determine which programs route through the proxy and which connect directly to the internet. It provides configuration profile management for importing and exporting parameter sets and supports automated service startup to maintain persistent connectivity.