floodesh-lib

# floodesh-lib floodesh-lib is middleware based web spider library written with Nodejs. # Install $ npm install floodesh-lib # Context A context instance is a kind of [Finite-State Machine](https://en.wikipedia.org/wiki/Finite-state_machine) implemented by `Generators` which is [ECMAScript 6](http://es6-features.org/#GeneratorFunctionIteratorProtocol) feature. By context, we can access almost all fields in `response` and `request`, like: ```javascript worker.responsemw.use( (ctx,next) => { ctx.content = ctx.body.toString(); // totally do not care about the body return next(); }) ``` ## Request ### ctx.querystring * String Get querystring. ### ctx.idempotent * Boolean Check if the request is idempotent. ### ctx.search * String Get the search string. It includes the leading "?" compare to querystring. ### ctx.method * String Get request method. ### ctx.query * Object Get parsed query-string. ### ctx.path * String Get the request pathname ### ctx.url * String Return request url, the same as __ctx.href__. ### ctx.origin * String Get the origin of URL, for instance, "https://www.google.com". ### ctx.protocol * String Return the protocol string "http" or "https". ### ctx.host * String, hostname:port Parse the "Host" header field host and support X-Forwarded-Host when a proxy is enabled. ### ctx.hostname * String Parse the "Host" header field hostname and support X-Forwarded-Host when a proxy is enabled. ### ctx.secure * Boolean Check if protocol is https. ## Response ### ctx.status * Number Get status code from response. ### ctx.message * String Get status message from response. ### ctx.body * Buffer Get the response body in Buffer. ### ctx.length * Number Get length of response body. ### ctx.type * String Get the response mime type, for instance, "text/html" ### ctx.lastModifieds * Date Get the Last-Modified date in Date form, if it exists. ### ctx.etag * String Get the ETag of a response. ### ctx.header * Object Return the response header. ### ctx.contentType * String ### ctx.get(key) * `key` String * Return: String Get value by key in response headers ### ctx.is(types) * `type`s String|Array * Return: String|false|null Check if the incoming response contains the "Content-Type" header field, and it contains any of the give mime `type`s.If there is no response body, `null` is returned.If there is no content type, `false` is returned.Otherwise, it returns the first `type` that matches.