HTTP 協議解析庫：fast-http

這是一個快速的 HTTP request/response 協議解析器，用于 Common Lisp開發中。 大部分移植自 C 語言版本的 http-parser.

具體有多快請看下圖：

• http-parser: An HTTP Parser for Node.js

NOTE: Deleted PicoHTTPParser because the benchmark was wrong. It's 3.7 times faster than fast-http. Amazing.

詳情請看 Benchmark

用法

其API非常類似于 http-parse.

(let* ((http (make-http-request))
       (parser (make-parser http
                            :header-callback (lambda (headers)
                                               (my-app:got-headers!!! headers))
                            :body-callback (lambda (bytes)
                                             (my-app:got-body-piece bytes)))))
  (loop for http-data = (my-app:get-http-data-from-request-i-sent-out-earlier) do
    (multiple-value-bind (http headers-finished-p body-finished-p)
        (funcall parser http-data)
      (when body-finished-p
        (my-app:close-http-stream))
      ...)))

API 與 http-parse 不同之處

• http, http-request and http-response are structure classes, not standard classes.
• http doesn't have :force-stream option. (always streaming)
• http doesn't have :store-body option because it can consume much memory.
• body-callback for make-parser and make-multipart-parser doesn't take a flag body-complete-p.
  • Use finish-callback to know if the parsing is finished.
• :multipart-callback of make-parser and :callback of make-multipart-parser takes a stream, not a body octet vector at the 4th argument.
• Raises errors aggressively while parsing.
  • Handle fast-http-error as you needed.
• Doesn't use a property list as a representation of HTTP headers. (See issue #1)

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