DeleGate 9.9.3 / 9.9.4 Pre11

DeleGate 9.9.3 / 9.9.4 Pre11 is a full featured and cost-effective application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows, MacOS X and OS/2). DeleGate mediates communication of various protocols (HTTP, FTP, NNTP, SMTP, POP, IMAP, LDAP, Telnet, SOCKS, DNS, etc.), applying cache and conversion for mediated data, controlling access from clients and routing toward servers.

It translates protocols between clients and servers, applying SSL(TLS) to arbitrary protocols, converting between IPv4 and IPv6, merging several servers into a single server view with aliasing and filtering. Born as a tiny proxy for Gopher in March 1994, it has steadily grown into a general purpose proxy server. Besides being a proxy, DeleGate can be used as a simple origin server for some protocols (HTTP, FTP and NNTP). 

What is DeleGate?

• It is an application level gateway (proxy server)
• Mediates between clients and servers with access control
• Value added proxy based on interpretation of application protocols
• Supports various protocols based on a common set of mechanisms
• Supports multiple platforms with a common source program
• Also works as origin servers (and clients)
• Toward a framework of a generic application protocol interpreter 

Major Features:

1. Easy firewall construction by flexible access control
2. Flexible application level routing regarding protocols and users
3. Reduces traffic by data cache (stored in protocol inherent format)
4. Improves response time by reusing and sharing connection
5. Expands accessibility of services by application protocol gatewaying
6. Expands accessibility of information resources by data translation
7. Provides virtual views for a space of resources by "mounting"
8. Mediates between secure protocols and non secure protocols
9. Supports extension of value added services by pluggable "filters" 

Enhancements:

• FIX
• • fixed SEGV or delay in SSL or Gzip threads on 64bits CPU (9.6.0)
  • fixed SEGV or frozen thread in MITM over HTTP proxy
  • removing piled AF_UNIX sockets left under ACTDIR/socket (9.6.3)
  • fixed frozen auto. restart in foreground on Win32 (9.9.0)
  • coped with "Content-Encoding: x-gzip" over HTTP proxy
  • suppressed HTTP gzip encoding for response from slow "push server"
  • putting HTTP Content-MD5 in Base64 (not in Hex)
  • clearing SSL threads for SERVER=tcprelay with STLS=fsv
• NEW
• • implemented "Connection Cache" to boost HTTP connections (-Ecc option)
  • choking transmission speed over HTTP and FTP (by MAXIMA=bps:128k)
  • AUTHORIZER=-hostlist/Name with HOSTLIST=Name:List
  • AUTHORIZER=-userpass/User/Pass for AUTHORIZER=-list{User:Pass}
  • MIMECONV=alt:flat to show all alternatives (POP,SMTP,NNTP)
  • MIMECONV=alt:first to show the first alternative only (POP,SMTP,NNTP)
  • enabled routing by request method (as FORWARD=http://serv-_-http//POST)