You canĪlso use zlibDeflateOptions and zlibInflateOptions, which is passed directly Tuning of permessage-deflate can be done via the options defined below. Representative of your workload and ensure Node.js/zlib will handle it with Permessage-deflate in production, it is worthwhile to set up a test Memory fragmentation and slow performance. Where increased concurrency, especially on Linux, can lead to catastrophic Note that Node.js has a variety of issues with high-performance compression, It adds a significant overhead in terms of performance and memoryĬonsumption so we suggest to enable it only if it is really needed. The extension is disabled by default on the server and enabled by default on theĬlient. The client and server to negotiate a compression algorithm and its parameters,Īnd then selectively apply it to the data payloads of each WebSocket message. Ws supports the permessage-deflate extension which enables See /doc/ws.md for Node.js-like documentation of ws classes and The utf-8-validate module is not needed and is not required, even if it isĪlready installed, regardless of the value of the WS_NO_UTF_8_VALIDATEĮnvironment variable, if buffer.isUtf8() is available. To how the Node.js resolver algorithm works. Put a package in the package search path of an application of another user, due These might be useful to enhance security in systems where a user can To not even try to require and use these modules, use the npm install -save-optional utf-8-validate: Allows to efficiently check if a.Operations such as masking and unmasking the data payload of the WebSocket npm install -save-optional bufferutil: Allows to efficiently perform.You don't necessarily need to have a C++ compiler installed on your machine. Prebuilt binaries are available for the most popular platforms so These modules are binary addons that improve the performance of certain There are 2 optional modules that can be installed along side with the ws HyBi drafts 13-17 (Current default, alternatively option.HyBi drafts 07-12 (Use the option protocolVersion: 8).How to detect and close broken connections?.How to get the IP address of the client?.Multiple servers sharing a single HTTP/S server.To make the same code work seamlessly on Node.js and the browser, youĬan use one of the many wrappers available on npm, like Reference to a back end with the role of a client in the WebSocketĬommunication. Note: This module does not work in the browser. Passes the quite extensive Autobahn test suite: server, Ws is a simple to use, blazing fast, and thoroughly tested WebSocket client and
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