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Support persistent connection, even in single thread mode (i.e concurrency=none).

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Warning: as there is no concurrent request handling in single threaded mode,
            it is recommended to either set the keep_alive_timeout to a small value,
            or disable persistent connection by setting max_keep_alive_requests to 0.
Change the default keep_alive_timeout from 15 to 5 seconds.
Accept -1 as value of max_keep_alive_requests to have unlimited number of request in the same persistent connection.
This commit is contained in:
Jocelyn Fiat
2017-10-18 23:29:16 +02:00
parent edec837c4e
commit 74121be470
6 changed files with 42 additions and 17 deletions
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12
library/server/httpd/concurrency/none/httpd_request_handler.e
View File

@@ -8,19 +8,9 @@ deferred class
inherit
HTTPD_REQUEST_HANDLER_I
redefine
is_persistent_connection_supported
end
feature -- Status report
is_persistent_connection_supported: BOOLEAN = False
-- <Precursor>
-- When there is no concurrency support, do not try to support
-- persistent connection!
note
copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
copyright: "2011-2017, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
source: "[
Eiffel Software

2
library/server/httpd/configuration/httpd_constants.e
View File

@@ -25,7 +25,7 @@ feature -- Default timeout settings
feature -- Default persistent connection settings
default_keep_alive_timeout: INTEGER = 15 -- seconds
default_keep_alive_timeout: INTEGER = 5 -- seconds
default_max_keep_alive_requests: INTEGER = 100
note

6
library/server/httpd/httpd_request_handler_i.e
View File

@@ -140,7 +140,8 @@ feature -- Settings
is_persistent_connection_supported: BOOLEAN
-- Is persistent connection supported?
do
Result := {HTTPD_SERVER}.is_persistent_connection_supported and then max_keep_alive_requests > 0
Result := {HTTPD_SERVER}.is_persistent_connection_supported and then
max_keep_alive_requests /= 0 --| `-1` no limit
end
is_next_persistent_connection_supported: BOOLEAN
@@ -247,7 +248,8 @@ feature -- Execution
l_exit
loop
n := n + 1
if n >= m then
-- If `m` is `-1`, no limit for the number of keep_alive requests.
if m >= 0 and n >= m then
is_next_persistent_connection_supported := False
elseif n > 1 and is_verbose then
log ("Reuse connection (" + n.out + ")", information_level)