Comparison
SOCKS operates at a lower level than HTTP proxying: SOCKS uses a handshake protocol to inform the proxy software about the connection that the client is trying to make and then acts as a transparently as possible,whereas an HTTP proxy works for HTTP protocol (at the requesting end, as it can typically do FTP as a retrieval protocol ... ) . This means that the http proxy interprets and rewrites headers to suit and is not transparent. HTTP is transported over a TCP connection only HTTP proxies take an HTTP request and forward it to an HTTP server. Though HTTP proxying has a different use-case in mind, the CONNECT method allows one to forward TCP connections, there is however no mechanism for UDP proxying. The following examples show the difference between the two methods:
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