Open Source C Proxy Clients

ProxyBridge is a free, open-source proxy management application designed to redirect network traffic from individual programs on Windows, macOS, and Linux. It enables applications without native proxy support to communicate through HTTP or SOCKS5 proxy servers. The software intercepts network connections at the system level without requiring changes to target applications. Users can create rules to route, allow, or block traffic based on processes, IP addresses, ports, protocols, and hostnames. ProxyBridge supports both TCP and UDP traffic, including connections used by games, databases, and remote access tools. Its graphical interface and command-line tools accommodate different networking workflows. Configuration import and export capabilities simplify rule management across systems.

Cross-platform C library to establish TCP connections using a proxy. Supports different connection methods: - no proxy (optionally allowing to bind to a local address and/or port) - HTTP proxy: only CONNECT method, only without authentication or basic authentication - SOCKS4: without IDENT functionality - SOCKS5 (RFC 1928): only without authentication or username/password Features: - Currently only support IPv4 TCP connections. - Returns a standard operating system SOCKET that can be manipulated by standard operating system functions like send() and recv(). - Supports daisy-chaining multiple proxies. - Can also be used for direct connections (without proxy) optionally binding to a local address and/or port.

HTTP Proxy Client is the set of libraries and scripts, provides transparent access to Internet via HTTP proxy tunnel for programms, which uses TCP/IP for communication. The tunnel provided by CONNECT method of HTTP proxy. Supported external DNS resolving.