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
|
START
=====
|
,------------------>|<-----------------------------------------------.
| | |
| < article has been deferred already > |
| no yes |
| | | |
| | < article exists > |
| | yes no |
| | | | |
| |<---------' | missing++ |
| | | |
| |offered++ === |
|conn | END |
|fails; < nocheck mode > |
|requeued yes no |
|.id/bod/nc / |CHECK/IHAVE |
|++ | |offered.ch++ |
| | | |
| | | |
^^^^^^^^ | | |
at | | |
any | | |
time | ______ < peer response > _________ |
| wanted unwanted rejected deferred |
| 238/338 438/435 439* 436/431 |
| / | | | |
|<-------' |unwanted |rejected |deferred |
| | .id++ | .id++ | .id++ |
< article exists > | | | |
no yes === === `-----------> |
| | END END |
| | |
| |TAKETHIS/body |
| |sent.ch/.nc++ |
| `-------. |
| | |
| ______ < peer response > _________ |
| accepted unwanted rejected deferred |
| 239/235 438*/435* 439/437 436/431* |
| | | | | |
|missing |accepted |unwanted |rejected |deferred |
|.bod/nc++ |.bod/nc++ |.bod/nc++ |.bod/nc++ |.bod/nc++ |
| | | | | |
=== === === === `----------'
END END END END
Response codes are <code from CHECK/TAKETHIS>/<code from IHAVE>
* indicates response which is forbidden in this context by RFC4644/3977
|
