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net/http/codes.lua @ 11661:735b8f4a6d7e
net.http: Send entire HTTP request header as one write
When opportunistic writes are enabled this reduces the number of
syscalls and TCP packets sent on the wire.
Experiments with TCP Fast Open made this even more obvious.
That table trick probably wasn't as efficient. Lua generates bytecode
for a table with zero array slots and space for two entries in the hash
part, plus code to set [2] and [4]. I didn't verify but I suspect it
would have had to resize the table when setting [1] and [3], although
probably only once. Concatenating the strings directly in Lua is easier
to read and involves no extra table or function call.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 08 Jul 2021 18:21:59 +0200 |
parent | 10370:78bda7932f17 |
child | 12548:5133d6e48686 |
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local response_codes = { -- Source: http://www.iana.org/assignments/http-status-codes [100] = "Continue"; -- RFC7231, Section 6.2.1 [101] = "Switching Protocols"; -- RFC7231, Section 6.2.2 [102] = "Processing"; [103] = "Early Hints"; -- [104-199] = "Unassigned"; [200] = "OK"; -- RFC7231, Section 6.3.1 [201] = "Created"; -- RFC7231, Section 6.3.2 [202] = "Accepted"; -- RFC7231, Section 6.3.3 [203] = "Non-Authoritative Information"; -- RFC7231, Section 6.3.4 [204] = "No Content"; -- RFC7231, Section 6.3.5 [205] = "Reset Content"; -- RFC7231, Section 6.3.6 [206] = "Partial Content"; -- RFC7233, Section 4.1 [207] = "Multi-Status"; [208] = "Already Reported"; -- [209-225] = "Unassigned"; [226] = "IM Used"; -- [227-299] = "Unassigned"; [300] = "Multiple Choices"; -- RFC7231, Section 6.4.1 [301] = "Moved Permanently"; -- RFC7231, Section 6.4.2 [302] = "Found"; -- RFC7231, Section 6.4.3 [303] = "See Other"; -- RFC7231, Section 6.4.4 [304] = "Not Modified"; -- RFC7232, Section 4.1 [305] = "Use Proxy"; -- RFC7231, Section 6.4.5 -- [306] = "(Unused)"; -- RFC7231, Section 6.4.6 [307] = "Temporary Redirect"; -- RFC7231, Section 6.4.7 [308] = "Permanent Redirect"; -- [309-399] = "Unassigned"; [400] = "Bad Request"; -- RFC7231, Section 6.5.1 [401] = "Unauthorized"; -- RFC7235, Section 3.1 [402] = "Payment Required"; -- RFC7231, Section 6.5.2 [403] = "Forbidden"; -- RFC7231, Section 6.5.3 [404] = "Not Found"; -- RFC7231, Section 6.5.4 [405] = "Method Not Allowed"; -- RFC7231, Section 6.5.5 [406] = "Not Acceptable"; -- RFC7231, Section 6.5.6 [407] = "Proxy Authentication Required"; -- RFC7235, Section 3.2 [408] = "Request Timeout"; -- RFC7231, Section 6.5.7 [409] = "Conflict"; -- RFC7231, Section 6.5.8 [410] = "Gone"; -- RFC7231, Section 6.5.9 [411] = "Length Required"; -- RFC7231, Section 6.5.10 [412] = "Precondition Failed"; -- RFC7232, Section 4.2 [413] = "Payload Too Large"; -- RFC7231, Section 6.5.11 [414] = "URI Too Long"; -- RFC7231, Section 6.5.12 [415] = "Unsupported Media Type"; -- RFC7231, Section 6.5.13 [416] = "Range Not Satisfiable"; -- RFC7233, Section 4.4 [417] = "Expectation Failed"; -- RFC7231, Section 6.5.14 [418] = "I'm a teapot"; -- RFC2324, Section 2.3.2 -- [419-420] = "Unassigned"; [421] = "Misdirected Request"; -- RFC7540, Section 9.1.2 [422] = "Unprocessable Entity"; [423] = "Locked"; [424] = "Failed Dependency"; [425] = "Too Early"; [426] = "Upgrade Required"; -- RFC7231, Section 6.5.15 -- [427] = "Unassigned"; [428] = "Precondition Required"; [429] = "Too Many Requests"; -- [430] = "Unassigned"; [431] = "Request Header Fields Too Large"; -- [432-450] = "Unassigned"; [451] = "Unavailable For Legal Reasons"; -- [452-499] = "Unassigned"; [500] = "Internal Server Error"; -- RFC7231, Section 6.6.1 [501] = "Not Implemented"; -- RFC7231, Section 6.6.2 [502] = "Bad Gateway"; -- RFC7231, Section 6.6.3 [503] = "Service Unavailable"; -- RFC7231, Section 6.6.4 [504] = "Gateway Timeout"; -- RFC7231, Section 6.6.5 [505] = "HTTP Version Not Supported"; -- RFC7231, Section 6.6.6 [506] = "Variant Also Negotiates"; [507] = "Insufficient Storage"; [508] = "Loop Detected"; -- [509] = "Unassigned"; [510] = "Not Extended"; [511] = "Network Authentication Required"; -- [512-599] = "Unassigned"; }; for k,v in pairs(response_codes) do response_codes[k] = ("%03d %s"):format(k, v); end return setmetatable(response_codes, { __index = function(_, k) return k.." Unassigned"; end })