-
-
Notifications
You must be signed in to change notification settings - Fork 1.6k
/
request_processor.cr
95 lines (79 loc) · 2.55 KB
/
request_processor.cr
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
require "./handler"
class HTTP::Server::RequestProcessor
# Maximum permitted size of the request line in an HTTP request.
property max_request_line_size = HTTP::MAX_REQUEST_LINE_SIZE
# Maximum permitted combined size of the headers in an HTTP request.
property max_headers_size = HTTP::MAX_HEADERS_SIZE
def initialize(&@handler : HTTP::Handler::HandlerProc)
@wants_close = false
end
def initialize(@handler : HTTP::Handler | HTTP::Handler::HandlerProc)
@wants_close = false
end
def close
@wants_close = true
end
def process(input, output, error = STDERR)
must_close = true
response = Response.new(output)
begin
until @wants_close
request = HTTP::Request.from_io(
input,
max_request_line_size: max_request_line_size,
max_headers_size: max_headers_size,
)
# EOF
break unless request
if request.is_a?(HTTP::Status)
response.respond_with_status(request)
return
end
response.version = request.version
response.reset
response.headers["Connection"] = "keep-alive" if request.keep_alive?
context = Context.new(request, response)
begin
@handler.call(context)
rescue ex
response.respond_with_status(:internal_server_error)
error.puts "Unhandled exception on HTTP::Handler"
ex.inspect_with_backtrace(error)
return
end
if response.upgraded?
must_close = false
return
end
response.output.close
output.flush
break unless request.keep_alive?
# Don't continue if the handler set `Connection` header to `close`
break unless HTTP.keep_alive?(response)
# The request body is either FixedLengthContent or ChunkedContent.
# In case it has not entirely been consumed by the handler, the connection is
# closed the connection even if keep alive was requested.
case body = request.body
when FixedLengthContent
if body.read_remaining > 0
# Close the connection if there are bytes remaining
break
end
when ChunkedContent
# Close the connection if the IO has still bytes to read.
break unless body.closed?
else
# Nothing to do
end
end
rescue IO::Error
# IO-related error, nothing to do
ensure
begin
input.close if must_close
rescue IO::Error
# IO-related error, nothing to do
end
end
end
end