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In 2003, Python web frameworks were typically written against only CGI, FastCGI, mod_python, or some other custom API of a specific web server. [6] To quote PEP 333: Python currently boasts a wide variety of web application frameworks, such as Zope, Quixote, Webware, SkunkWeb, PSO, and Twisted Web -- to name just a few.
Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.
Upon completion of the algorithm, the client executes exit() [5] and the server executes close(). [6] For a Unix domain socket, the socket's address is a /path/filename identifier. The server will create /path/filename on the filesystem to act as a lock file semaphore. No I/O occurs on this file when the client and server send messages to each ...
Named pipes cannot be created as files within a normal filesystem, unlike in Unix. Also unlike their Unix counterparts, named pipes are volatile (removed after the last reference to them is closed). Every pipe is placed in the root directory of the named pipe filesystem (NPFS), mounted under the special path \\.\pipe\ (that is, a pipe named ...
Secure ShellFish is a SSH client for iOS and macOS that includes a SOCKS server. ShimmerCat [20] is a web server that uses SOCKS5 to simulate an internal network, allowing web developers to test their local sites without modifying their /etc/hosts file. Tor is a system intended to enable online anonymity. Tor offers a TCP-only SOCKS server ...
Linux hosts send the first TCP Keepalive packet after 2 hours (default since Linux 2.2), then send 9 Keepalive probes (default since Linux 2.2) at 75 seconds (default since Linux 2.4) intervals, dropping the connection if there is no response to any of the Keepalive packets.
The web server or database management system also varies. LEMP is a version where Apache has been replaced with the more lightweight web server Nginx. [6] A version where MySQL has been replaced by PostgreSQL is called LAPP, or sometimes by keeping the original acronym, LAMP (Linux / Apache / Middleware (Perl, PHP, Python, Ruby) / PostgreSQL). [7]
For most file systems, a program terminates access to a file in a filesystem using the close system call. This flushes file buffers, updates file metadata , which may include and end-of-file indicator in the data; de-allocates resources associated with the file (including the file descriptor ) and updates the system wide table of files in use.