diff options
author | Damien Miller <djm@mindrot.org> | 2000-04-04 14:38:59 +1000 |
---|---|---|
committer | Damien Miller <djm@mindrot.org> | 2000-04-04 14:38:59 +1000 |
commit | 33b13568b520b25990261206e10c941a9270238f (patch) | |
tree | be9d549ee0c9c7774e3ec1da8d807b2e04b00bec /nchan2.ms | |
parent | 193ba88dd6e9d6bcd5f476c7f5ddde8fd0b752bf (diff) |
- OpenBSD CVS update:
- [packet.h packet.c]
ssh2 packet format
- [packet.h packet.c nchan2.ms nchan.h compat.h compat.c]
[channels.h channels.c]
channel layer support for ssh2
- [kex.h kex.c hmac.h hmac.c dsa.c dsa.h]
DSA, keyexchange, algorithm agreement for ssh2
Diffstat (limited to 'nchan2.ms')
-rw-r--r-- | nchan2.ms | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/nchan2.ms b/nchan2.ms new file mode 100644 index 000000000..1b119d135 --- /dev/null +++ b/nchan2.ms | |||
@@ -0,0 +1,64 @@ | |||
1 | .TL | ||
2 | OpenSSH Channel Close Protocol 2.0 Implementation | ||
3 | .SH | ||
4 | Channel Input State Diagram | ||
5 | .PS | ||
6 | reset | ||
7 | l=1 | ||
8 | s=1.2 | ||
9 | ellipsewid=s*ellipsewid | ||
10 | boxwid=s*boxwid | ||
11 | ellipseht=s*ellipseht | ||
12 | S1: ellipse "INPUT" "OPEN" | ||
13 | move right 2*l from last ellipse.e | ||
14 | S3: ellipse invis | ||
15 | move down l from last ellipse.s | ||
16 | S4: ellipse "INPUT" "CLOSED" | ||
17 | move down l from 1st ellipse.s | ||
18 | S2: ellipse "INPUT" "WAIT" "DRAIN" | ||
19 | arrow from S1.e to S4.n | ||
20 | box invis "rcvd CLOSE/" "shutdown_read" with .sw at last arrow.c | ||
21 | arrow "ibuf_empty ||" "rcvd CLOSE/" "send EOF" "" from S2.e to S4.w | ||
22 | arrow from S1.s to S2.n | ||
23 | box invis "read_failed/" "shutdown_read" with .e at last arrow.c | ||
24 | ellipse wid .9*ellipsewid ht .9*ellipseht at S4 | ||
25 | arrow "start" "" from S1.w+(-0.5,0) to S1.w | ||
26 | .PE | ||
27 | .SH | ||
28 | Channel Output State Diagram | ||
29 | .PS | ||
30 | S1: ellipse "OUTPUT" "OPEN" | ||
31 | move right 2*l from last ellipse.e | ||
32 | S3: ellipse invis | ||
33 | move down l from last ellipse.s | ||
34 | S4: ellipse "OUTPUT" "CLOSED" | ||
35 | move down l from 1st ellipse.s | ||
36 | S2: ellipse "OUTPUT" "WAIT" "DRAIN" | ||
37 | arrow from S1.e to S4.n | ||
38 | box invis "write_failed/" "shutdown_write" with .sw at last arrow.c | ||
39 | arrow "obuf_empty ||" "write_failed/" "shutdown_write" "" from S2.e to S4.w | ||
40 | arrow from S1.s to S2.n | ||
41 | box invis "rcvd EOF ||" "rcvd CLOSE/" "-" with .e at last arrow.c | ||
42 | ellipse wid .9*ellipsewid ht .9*ellipseht at S4 | ||
43 | arrow "start" "" from S1.w+(-0.5,0) to S1.w | ||
44 | .PE | ||
45 | .SH | ||
46 | Notes | ||
47 | .PP | ||
48 | The input buffer is filled with data from the socket | ||
49 | (the socket represents the local consumer/producer of the | ||
50 | forwarded channel). | ||
51 | The data is then sent over the INPUT-end (transmit-end) of the channel to the | ||
52 | remote peer. | ||
53 | Data sent by the peer is received on the OUTPUT-end (receive-end), | ||
54 | saved in the output buffer and written to the socket. | ||
55 | .PP | ||
56 | If the local protocol instance has forwarded all data on the | ||
57 | INPUT-end of the channel, it sends an EOF message to the peer. | ||
58 | .PP | ||
59 | A CLOSE message is sent to the peer if | ||
60 | both the INPUT- and the OUTOUT-half of the local | ||
61 | end of the channel are closed. | ||
62 | .PP | ||
63 | The channel can be deallocated by a protocol instance | ||
64 | if a CLOSE message he been both sent and received. | ||