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local json = require 'json'
local inspect = require 'inspect'
local pcall = pcall
local tonumber = tonumber
---@class jsonrpc
local m = {}
m.type = 'jsonrpc'
function m.encode(pack)
pack.jsonrpc = '2.0'
local content = json.encode(pack)
local buf = ('Content-Length: %d\r\n\r\n%s'):format(#content, content)
return buf
end
local function readProtoHead(reader)
local head = {}
while true do
local line = reader 'L'
if line == nil then
-- 说明管道已经关闭了
return nil, 'Disconnected!'
end
if line == '\r\n' then
break
end
local k, v = line:match '^([^:]+)%s*%:%s*(.+)\r\n$'
if not k then
return nil, 'Proto header error: ' .. line
end
if k == 'Content-Length' then
v = tonumber(v)
end
head[k] = v
end
return head
end
function m.decode(reader)
local head, err = readProtoHead(reader)
if not head then
return nil, err
end
local len = head['Content-Length']
if not len then
return nil, 'Proto header error: ' .. inspect(head)
end
local content = reader(len)
if not content then
return nil, 'Proto read error'
end
local null = json.null
json.null = nil
local suc, res = pcall(json.decode, content)
json.null = null
if not suc then
return nil, 'Proto parse error: ' .. res
end
return res
end
return m
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