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1 | !747 |
2 | |
3 | m {
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4 | static Set<S> peers = synchroTreeSet(); // only those with a running web server are listed |
5 | |
6 | p {
|
7 | makeAndroid("Networking module!");
|
8 | startAWebServer(8888); |
9 | for (S ip : getMyIPs()) discover(ip); // You are your own peer! :) |
10 | connectToGateway(); |
11 | } |
12 | |
13 | static synchronized S answer(S s) {
|
14 | if (match3("how many peers", s))
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15 | return "" + peers.size(); |
16 | if (match3("what is a peer", s))
|
17 | return "an ip address that had a port 8888 web server at some point"; |
18 | if (match3("list peers", s))
|
19 | return structure(peers); |
20 | if (match3("ok", s))
|
21 | return "ok!"; |
22 | return null; |
23 | } |
24 | |
25 | static void startAWebServer(int port) {
|
26 | Class webserver = hotwire("#1000842");
|
27 | set(webserver, "port", port); |
28 | set(webserver, "onClient", new Object() {
|
29 | public Object run(Object... args) {
|
30 | /* args are: final String uri, final Method method, |
31 | final Map<String, String> header, final Map<String, String> parms, |
32 | final Map<String, String> files */ |
33 | |
34 | Map<S, S> header = (Map) args[2]; |
35 | print("header: " + structure(header));
|
36 | S ip = header.get("remote-addr");
|
37 | discover(ip); |
38 | return null; |
39 | } |
40 | }); |
41 | call(webserver, "start"); |
42 | } |
43 | |
44 | static void connectToGateway() {
|
45 | L<S> ips = detectGateways(); |
46 | if (ips.isEmpty()) print("No gateways found.");
|
47 | for (String ip : ips) |
48 | discover(ip); |
49 | } |
50 | |
51 | static void discover(S ip) {
|
52 | if (peers.contains(ip)) |
53 | return; |
54 | |
55 | print("Possible peer found: " + ip + " - connecting");
|
56 | try {
|
57 | String page = loadPage("http://" + ip + ":8888"); // TODO: HEAD is enough
|
58 | peers.add(ip); |
59 | print("OK, peer found: " + ip + " - peers now: " + structure(peers));
|
60 | } catch (Throwable e) {
|
61 | print("Could not load home page of " + ip + ", not adding as peer. Peers: " + structure(peers));
|
62 | } |
63 | } |
64 | } |
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| Snippet ID: | #1001178 |
| Snippet name: | Networking module (developing) |
| Eternal ID of this version: | #1001178/1 |
| Text MD5: | c3274e29deafb72c731722d64047f7e0 |
| Transpilation MD5: | 243568b271c38478f589184d03783241 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX source code |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2015-09-29 14:40:50 |
| Source code size: | 1971 bytes / 64 lines |
| Pitched / IR pitched: | No / Yes |
| Views / Downloads: | 640 / 768 |
| Referenced in: | [show references] |