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CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2M TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. TWISTED.WEB.HTTP.REQUEST : API DOCUMENTATION Change the host and port the request thinks it's using. This method is useful for working with reverse HTTP proxies (e.g. both Squid and Apache's mod_proxy can do this), when the address the HTTP client is using is different than the one we're listening on. DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2MHANDLING POSTS
Handling POSTs¶. All of the previous examples have focused on GET requests. Unlike GET requests, POST requests can have a request body - extra data after the request headers; for example, data representing the contents of an HTML form. Twisted Web makes this data available to applications via the Request object.. Here’s an example web server which renders a static HTML form and then TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2M TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. TWISTED.WEB.HTTP.REQUEST : API DOCUMENTATION Change the host and port the request thinks it's using. This method is useful for working with reverse HTTP proxies (e.g. both Squid and Apache's mod_proxy can do this), when the address the HTTP client is using is different than the one we're listening on. DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2MHANDLING POSTS
Handling POSTs¶. All of the previous examples have focused on GET requests. Unlike GET requests, POST requests can have a request body - extra data after the request headers; for example, data representing the contents of an HTML form. Twisted Web makes this data available to applications via the Request object.. Here’s an example web server which renders a static HTML form and then TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I DOWNLOADS – TWISTED An event-driven networking engine written in Python and MIT licensed. USING THE TWISTED WEB CLIENT Issuing Requests¶. The twisted.web.client.Agent class is the entry point into the client API. Requests are issued using the request method, which takes as parameters a request method, a request URI, the request headers, and an object which can produce the request body (if there is to be one). The agent is responsible for connection setup. Because of this, it requires a reactor as an argument TWISTED DOCUMENTATION: LOGGING WITH TWISTED.PYTHON.LOG 1. log. startLogging ( sys. stdout ) or: 1 2 3. from twisted. python. logfile import DailyLogFile log. startLogging ( DailyLogFile. fromFullPath ( "/var/log/foo.log" )) By default, startLogging will also redirect anything written to sys.stdout and sys.stderr to thelog. You
REACTOR OVERVIEW
Reactor Basics ¶. The reactor is the core of the event loop within Twisted – the loop which drives applications using Twisted. The event loop is a programming construct that waits for and dispatches events or messages in a program. It works by calling some internal or external “event provider”, which generally blocks until an eventhas
TWISTED.INTERNET : API DOCUMENTATION Twisted Internet is a collection of compatible event-loops for Python. It contains the code to dispatch events to interested observers and a portable API so that observers need not care about which event loop is running. Thus, it is possible to use the same code for different loops, from Twisted's basic, yet portable, select-based loop to the TWISTED.CONCH.RECVLINE : API DOCUMENTATION Class: Logging: Wrapper which logs attribute lookups. Class: TransportSequence: An ITerminalTransport implementation which forwards calls to one or more other ITerminalTransports.: Class: LocalTerminalBufferMixin: A mixin for RecvLine subclasses which records the state of the terminal. WELCOME TO THE TWISTED DOCUMENTATION! Welcome to the Twisted documentation!¶ Contents: Installing Twisted. Installing Optional Dependencies; Twisted Core. Developer Guides TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I USING TLS IN TWISTED Another part of the TLS protocol which CertificateOptions can control is the version of the TLS or SSL protocol used. By default, Twisted will configure it to use TLSv1.0 or later and disable the insecure SSLv3 protocol. Manual control over protocols can be helpful if you need to support legacy SSLv3 systems, or you wish to restrict it down to just the strongest of the TLS versions. TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2M TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. TWISTED.INTERNET.SELECTREACTOR.SELECTREACTOR : API Implements interfaces: twisted.internet.interfaces.IReactorFDSet. View In Hierarchy. A select () based reactor - runs on all POSIX platforms and on Win32. Method. __init__. Initialize file descriptor tracking dictionaries and the base class. Method. doSelect. RunHANDLING POSTS
Handling POSTs¶. All of the previous examples have focused on GET requests. Unlike GET requests, POST requests can have a request body - extra data after the request headers; for example, data representing the contents of an HTML form. Twisted Web makes this data available to applications via the Request object.. Here’s an example web server which renders a static HTML form and then TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2M TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. TWISTED.INTERNET.SELECTREACTOR.SELECTREACTOR : API Implements interfaces: twisted.internet.interfaces.IReactorFDSet. View In Hierarchy. A select () based reactor - runs on all POSIX platforms and on Win32. Method. __init__. Initialize file descriptor tracking dictionaries and the base class. Method. doSelect. RunHANDLING POSTS
Handling POSTs¶. All of the previous examples have focused on GET requests. Unlike GET requests, POST requests can have a request body - extra data after the request headers; for example, data representing the contents of an HTML form. Twisted Web makes this data available to applications via the Request object.. Here’s an example web server which renders a static HTML form and then TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I USING THE TWISTED WEB CLIENT Issuing Requests¶. The twisted.web.client.Agent class is the entry point into the client API. Requests are issued using the request method, which takes as parameters a request method, a request URI, the request headers, and an object which can produce the request body (if there is to be one). The agent is responsible for connection setup. Because of this, it requires a reactor as an argument DOWNLOADS – TWISTED An event-driven networking engine written in Python and MIT licensed.REACTOR OVERVIEW
Reactor Basics ¶. The reactor is the core of the event loop within Twisted – the loop which drives applications using Twisted. The event loop is a programming construct that waits for and dispatches events or messages in a program. It works by calling some internal or external “event provider”, which generally blocks until an eventhas
TWISTED.INTERNET : API DOCUMENTATION Twisted Internet is a collection of compatible event-loops for Python. It contains the code to dispatch events to interested observers and a portable API so that observers need not care about which event loop is running. Thus, it is possible to use the same code for different loops, from Twisted's basic, yet portable, select-based loop to the WELCOME TO THE TWISTED DOCUMENTATION! Welcome to the Twisted documentation!¶ Contents: Installing Twisted. Installing Optional Dependencies; Twisted Core. Developer Guides TWISTED.CONCH.RECVLINE : API DOCUMENTATION Class: Logging: Wrapper which logs attribute lookups. Class: TransportSequence: An ITerminalTransport implementation which forwards calls to one or more other ITerminalTransports.: Class: LocalTerminalBufferMixin: A mixin for RecvLine subclasses which records the state of the terminal. USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I USING TLS IN TWISTED Another part of the TLS protocol which CertificateOptions can control is the version of the TLS or SSL protocol used. By default, Twisted will configure it to use TLSv1.0 or later and disable the insecure SSLv3 protocol. Manual control over protocols can be helpful if you need to support legacy SSLv3 systems, or you wish to restrict it down to just the strongest of the TLS versions. TWISTED.ENTERPRISE.ADBAPI.CONNECTIONPOOL : API DOCUMENTATION class documentation. class twisted.enterprise.adbapi.ConnectionPool: (source) View In Hierarchy. Represent a pool of connections to a DB-API 2.0 compliant database. Instance Variable. connectionFactory. factory for connections, default to Connection. Instance Variable.transactionFactory.
TWISTED.INTERNET.ADDRESS.IPV4ADDRESS : API DOCUMENTATION Instance Variables: type: A string describing the type of transport, either 'TCP' or 'UDP'. host: A string containing the dotted-quad IPaddress. port
TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2MWRITING CLIENTS
Overview ¶. Twisted is a framework designed to be very flexible, and let you write powerful clients. The cost of this flexibility is a few layers in the way to writing your client. This document covers creating clients that can be used for TCP, SSL and Unix sockets. UDP is covered in a different document . TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. TWISTED.INTERNET.INTERFACES.IREACTORTCP : API DOCUMENTATION twisted.internet.interfaces.IReactorTCP (. Interface. ) interface documentation. Connects a given protocol factory to the given numeric TCP/IP port. Connect a TCP client. def listenTCP (port, factory, backlog=50, interface=""""""): (source) Connects a given protocol factory to the given numeric TCP/IP port. The local IPv4 or IPv6address to
DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2M USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2MWRITING CLIENTS
Overview ¶. Twisted is a framework designed to be very flexible, and let you write powerful clients. The cost of this flexibility is a few layers in the way to writing your client. This document covers creating clients that can be used for TCP, SSL and Unix sockets. UDP is covered in a different document . TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. TWISTED.INTERNET.INTERFACES.IREACTORTCP : API DOCUMENTATION twisted.internet.interfaces.IReactorTCP (. Interface. ) interface documentation. Connects a given protocol factory to the given numeric TCP/IP port. Connect a TCP client. def listenTCP (port, factory, backlog=50, interface=""""""): (source) Connects a given protocol factory to the given numeric TCP/IP port. The local IPv4 or IPv6address to
DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2M USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I API DOCUMENTATION FOR TWISTED Twisted API Documentation Get Started A listing of all modules and packages, organized by package hierarchy.; A listing of all classes, organized by inheritance hierarchy.; A listing of all functions, classes, modules and packages, ordered by name.; Start at twisted, the root package.; About TWISTED DOCUMENTATION: TWISTED DOCUMENTATION Index. Version: 10.0.0 EXAMPLES — TWISTED 21.2.0 DOCUMENTATION longex.py - example of doing arbitrarily long calculations nicely in Twisted. stdin.py - reading a line at a time from standard input without blocking the reactor. filewatch.py - write the content of a file to standard out one line at a time. tls_alpn_npn_client.py - example of TLS next-protocol negotiation on the client side using NPNand ALPN.
USING THE TWISTED WEB CLIENT Issuing Requests¶. The twisted.web.client.Agent class is the entry point into the client API. Requests are issued using the request method, which takes as parameters a request method, a request URI, the request headers, and an object which can produce the request body (if there is to be one). The agent is responsible for connection setup. Because of this, it requires a reactor as an argumentREACTOR OVERVIEW
Reactor Basics ¶. The reactor is the core of the event loop within Twisted – the loop which drives applications using Twisted. The event loop is a programming construct that waits for and dispatches events or messages in a program. It works by calling some internal or external “event provider”, which generally blocks until an eventhas
TWISTED DOCUMENTATION: LOGGING WITH TWISTED.PYTHON.LOG 1. log. startLogging ( sys. stdout ) or: 1 2 3. from twisted. python. logfile import DailyLogFile log. startLogging ( DailyLogFile. fromFullPath ( "/var/log/foo.log" )) By default, startLogging will also redirect anything written to sys.stdout and sys.stderr to thelog. You
TWISTED.CONCH.RECVLINE : API DOCUMENTATION Class: Logging: Wrapper which logs attribute lookups. Class: TransportSequence: An ITerminalTransport implementation which forwards calls to one or more other ITerminalTransports.: Class: LocalTerminalBufferMixin: A mixin for RecvLine subclasses which records the state of the terminal. CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request TWISTED.WEB.SERVER.REQUEST : API DOCUMENTATION class documentation. Part of twisted. web. server View Source (View In Hierarchy) Known subclasses: twisted.web.distrib.Request. Implements interfaces: twisted.web.iweb.IRequest. Instance Variable. defaultContentType. A bytes giving the default Content-Type value to send in responses if no other value is set. None disables the default. WELCOME TO THE TWISTED DOCUMENTATION! Welcome to the Twisted documentation!¶ Contents: Installing Twisted. Installing Optional Dependencies; Twisted Core. Developer Guides TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2MWRITING CLIENTS
Overview ¶. Twisted is a framework designed to be very flexible, and let you write powerful clients. The cost of this flexibility is a few layers in the way to writing your client. This document covers creating clients that can be used for TCP, SSL and Unix sockets. UDP is covered in a different document . TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. TWISTED.INTERNET.INTERFACES.IREACTORTCP : API DOCUMENTATION twisted.internet.interfaces.IReactorTCP (. Interface. ) interface documentation. Connects a given protocol factory to the given numeric TCP/IP port. Connect a TCP client. def listenTCP (port, factory, backlog=50, interface=""""""): (source) Connects a given protocol factory to the given numeric TCP/IP port. The local IPv4 or IPv6address to
DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2M USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I TWISTEDWIKITIMELINEROADMAPVIEW TICKETSCONTRIBUTE TEMPLATES Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. It supports CPython 3.5+ and PyPy3. Twisted 21.2.0 is the last version with Python 3.5 support. Twisted 20.3.0 was the last version with Python 2.7 and PyPy2 support.
THE BASICS — TWISTED 21.2.0 DOCUMENTATION The Twisted Daemon is a program that knows how to run Application s. Strictly speaking, twistd is not necessary. Fetching the application, getting the IService component, calling startService (), scheduling stopService () when the reactor shuts down, and then calling reactor.run () could be done manually. TWISTED.INTERNET.TASK.LOOPINGCALL : API DOCUMENTATION An alternate constructor for LoopingCall that makes available the number of calls which should have occurred since it was last invoked.. Note that this number is an int value; It represents the discrete number of calls that should have been made. For example, if you are using a looping call to display an animation with discrete frames, this number would be the number of frames to advance. TWISTED.INTERNET.PROTOCOL.PROTOCOL : API DOCUMENTATION Any protocol implementation, either client or server, should be a subclass of this class. The API is quite simple. Implement dataReceived to handle both event-based and synchronous input; output can be sent through the 'transport' attribute, which is to be an instance that implements twisted.internet.interfaces.ITransport. DIRECTORY LISTING FOR /RELEASES/TWISTED/11.0/ Filename Size Content type Content encoding; Twisted-11.0.0.tar.bz2: 2M Twisted-11.0.0.winxp32-py2.5.exe: 2MWRITING CLIENTS
Overview ¶. Twisted is a framework designed to be very flexible, and let you write powerful clients. The cost of this flexibility is a few layers in the way to writing your client. This document covers creating clients that can be used for TCP, SSL and Unix sockets. UDP is covered in a different document . TWISTED.INTERNET.ENDPOINTS : API DOCUMENTATION Construct a stream server endpoint from an endpoint description string. The format for server endpoint descriptions is a simple string. It is a prefix naming the type of endpoint, then a colon, then the arguments for that endpoint. TWISTED.INTERNET.INTERFACES.IREACTORTCP : API DOCUMENTATION twisted.internet.interfaces.IReactorTCP (. Interface. ) interface documentation. Connects a given protocol factory to the given numeric TCP/IP port. Connect a TCP client. def listenTCP (port, factory, backlog=50, interface=""""""): (source) Connects a given protocol factory to the given numeric TCP/IP port. The local IPv4 or IPv6address to
DIRECTORY LISTING FOR /RELEASES/TWISTED/20.3/ Filename Size Content type Content encoding; Twisted-20.3.0-cp27-cp27m-win_amd64.whl: 3M Twisted-20.3.0.tar.bz2: 2M USING THREADS IN TWISTED How Twisted Uses Threads Itself¶. All callbacks registered with the reactor - for example, dataReceived, connectionLost, or any higher-level method that comes from these, such as render_GET in twisted.web, or a callback added to a Deferred - are called from reactor.run.The terminology around this is that we say these callbacks are run in the “main thread”, or “reactor thread” or “I API DOCUMENTATION FOR TWISTED Twisted API Documentation Get Started A listing of all modules and packages, organized by package hierarchy.; A listing of all classes, organized by inheritance hierarchy.; A listing of all functions, classes, modules and packages, ordered by name.; Start at twisted, the root package.; About TWISTED DOCUMENTATION: TWISTED DOCUMENTATION Index. Version: 10.0.0 EXAMPLES — TWISTED 21.2.0 DOCUMENTATION longex.py - example of doing arbitrarily long calculations nicely in Twisted. stdin.py - reading a line at a time from standard input without blocking the reactor. filewatch.py - write the content of a file to standard out one line at a time. tls_alpn_npn_client.py - example of TLS next-protocol negotiation on the client side using NPNand ALPN.
USING THE TWISTED WEB CLIENT Issuing Requests¶. The twisted.web.client.Agent class is the entry point into the client API. Requests are issued using the request method, which takes as parameters a request method, a request URI, the request headers, and an object which can produce the request body (if there is to be one). The agent is responsible for connection setup. Because of this, it requires a reactor as an argumentREACTOR OVERVIEW
Reactor Basics ¶. The reactor is the core of the event loop within Twisted – the loop which drives applications using Twisted. The event loop is a programming construct that waits for and dispatches events or messages in a program. It works by calling some internal or external “event provider”, which generally blocks until an eventhas
TWISTED DOCUMENTATION: LOGGING WITH TWISTED.PYTHON.LOG 1. log. startLogging ( sys. stdout ) or: 1 2 3. from twisted. python. logfile import DailyLogFile log. startLogging ( DailyLogFile. fromFullPath ( "/var/log/foo.log" )) By default, startLogging will also redirect anything written to sys.stdout and sys.stderr to thelog. You
TWISTED.CONCH.RECVLINE : API DOCUMENTATION Class: Logging: Wrapper which logs attribute lookups. Class: TransportSequence: An ITerminalTransport implementation which forwards calls to one or more other ITerminalTransports.: Class: LocalTerminalBufferMixin: A mixin for RecvLine subclasses which records the state of the terminal. CONFIGURING AND USING THE TWISTED WEB SERVER .rpy scripts¶. Files with the extension .rpy are python scripts which, when placed in a directory served by Twisted Web, will be executed when visited through the web.. An .rpy script must define a variable, resource, which is the Resource object that will render the request..rpy files are very convenient for rapid development and prototyping. Since they are executed on every web request TWISTED.WEB.SERVER.REQUEST : API DOCUMENTATION class documentation. Part of twisted. web. server View Source (View In Hierarchy) Known subclasses: twisted.web.distrib.Request. Implements interfaces: twisted.web.iweb.IRequest. Instance Variable. defaultContentType. A bytes giving the default Content-Type value to send in responses if no other value is set. None disables the default. WELCOME TO THE TWISTED DOCUMENTATION! Welcome to the Twisted documentation!¶ Contents: Installing Twisted. Installing Optional Dependencies; Twisted Core. Developer GuidesHOME FAQ DOCS
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Twisted is an event-driven networking engine written in Python and licensed under the open source MIT license. Twisted runs on
Python 2 and an ever growing subset also works with Python 3.CODE EXAMPLES ¶
* Echo Server
* Web Server
* Publish/Subscribe
* Mail Client
Twisted makes it easy to implement custom network applications. Here's a TCP server that echoes back everything that's written to it: from twisted.internet import protocol, reactor, endpoints class Echo(protocol.Protocol): def dataReceived(self, data): self.transport.write(data) class EchoFactory(protocol.Factory): def buildProtocol(self, addr):return Echo()
endpoints.serverFromString(reactor, "tcp:1234").listen(EchoFactory())reactor.run()
Learn more about writing servers,
writing clients
and the core networking libraries,
including support for SSL, UDP, scheduled events, unit testing infrastructure, and much more. Twisted includes an event-driven web server. Here's a sample web application; notice how the resource object persists in memory, rather than being recreated on each request: from twisted.web import server, resource from twisted.internet import reactor, endpoints class Counter(resource.Resource):isLeaf = True
numberRequests = 0 def render_GET(self, request): self.numberRequests += 1 request.setHeader(b"content-type", b"text/plain") content = u"I am request #{}\n".format(self.numberRequests) return content.encode("ascii") endpoints.serverFromString(reactor, "tcp:8080").listen(server.Site(Counter()))reactor.run()
Learn more about web application development,
templates
and Twisted's HTTP client.
Here's a simple publish/subscribe server, where clients see all messages posted by other clients: from twisted.internet import reactor, protocol, endpoints from twisted.protocols import basic class PubProtocol(basic.LineReceiver): def __init__(self, factory): self.factory = factory def connectionMade(self): self.factory.clients.add(self) def connectionLost(self, reason): self.factory.clients.remove(self) def lineReceived(self, line): for c in self.factory.clients: source = u"<{}> ".format(self.transport.getHost()).encode("ascii") c.sendLine(source + line) class PubFactory(protocol.Factory): def __init__(self): self.clients = set() def buildProtocol(self, addr): return PubProtocol(self) endpoints.serverFromString(reactor, "tcp:1025").listen(PubFactory())reactor.run()
You can test this out by opening two terminals and doing telnet localhost 1025 in each, then typing things. Twisted includes a sophisticated IMAP4 client library. from __future__ import print_functionimport sys
from twisted.internet import protocol, defer, endpoints, task from twisted.mail import imap4 from twisted.python import failure @defer.inlineCallbacks def main(reactor, username=b"alice", password=b"secret", strport="tls:example.com:993"): endpoint = endpoints.clientFromString(reactor, strport) factory = protocol.Factory.forProtocol(imap4.IMAP4Client)try:
client = yield endpoint.connect(factory) yield client.login(username, password) yield client.select('INBOX') info = yield client.fetchEnvelope(imap4.MessageSet(1)) print('First message subject:', info)except:
print("IMAP4 client interaction failed") failure.Failure().printTraceback() task.react(main, sys.argv) Give this a try, supplying your IMAP4 username, password, and client endpoint description for your IMAP4 server. You'll see the subject of the first message in your mailbox printed. See the TwistedMail documentation for moreinformation.
MORE PROTOCOLS ¶
Twisted also supports many common network protocols, including SMTP, POP3, IMAP, SSHv2, and DNS. For more information see our documentation and API reference.
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* Learn about the individuals and organisations that aid Twisted with donations of hardware, software, hosting and other things; * Help improve Twisted on Windows ! Human beings, please do not send messages to this email address!Last modified 12
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