Hi everybody,
I would like to sync my devices in p2p using the phonegap plugin on Android
devices. I shouldn't have more than 10 devices and the LAN should be stable.
1. I'm thinking to make one device as a master and, if possible, take the
role of the sync gateway.
What do you think about that ?
2. For the moment, I'm not using any discovery service but instead, just
setting the IP addresses manually in the source code. If I'm using the
architecture with one master device as a star, do my devices need to know
only the IP address of my master device? Or the master device need as well
the IP address of the other remote devices in order to replicate any change
on the database?
3. I tried a really simple example doing a p2p replication. It's working
quite well when I provide both IP addresses. When I provide the IP address
of my device A to my device B, the device A can make any change and the
data is replicated well but it's not working in the other way, so from the
device B to A.
I'm using this function to make the replication with the same URL, the
device's A one to both devices (probably why it's not working...)
function triggerSync(cb, retryCount) {
if (!config.user) {
return log("no user")
}
console.log("window.config.site.syncUrl " + window.config.site.syncUrl);
var remote = {
url : window.config.site.syncUrl
},
push = {
source : appDbName,
target : remote,
continuous : true
}, pull = {
target : appDbName,
source : remote,
continuous : true
};
pushSync = syncManager(window.config.site.server, push);
pullSync = syncManager(window.config.site.server, pull);
...
}
The logs, when it is not working :
04-16 11:31:25.023: I/CBLSQL(749): Acme.Utils.ThreadPool(0)-PooledThread:
Acme.Serve.Serve$ServeConnection@4221c580 Begin transaction (level 1)
04-16 11:31:25.023: I/CBLSQL(749): Acme.Utils.ThreadPool(0)-PooledThread:
Acme.Serve.Serve$ServeConnection@4221c580 Begin transaction (level 2)
04-16 11:31:25.033: I/CBLSQL(749): Acme.Utils.ThreadPool(0)-PooledThread:
Acme.Serve.Serve$ServeConnection@4221c580 CANCEL transaction (level 2)
04-16 11:31:25.033: W/System.err(749):
com.couchbase.lite.CouchbaseLiteException: No existing revision found with
doc id: 4237ce67-922b-46a9-9d5d-54f0c6504cc5
04-16 11:31:25.033: W/System.err(749): at
com.couchbase.lite.Database.putRevision(Database.java:2981)
04-16 11:31:25.033: W/System.err(749): at
com.couchbase.lite.Database.putRevision(Database.java:2916)
04-16 11:31:25.043: W/System.err(749): at
com.couchbase.lite.router.Router.update(Router.java:1453)
04-16 11:31:25.043: W/System.err(749): at
com.couchbase.lite.router.Router.do_POST_Document_bulk_docs(Router.java:904)
04-16 11:31:25.043: W/System.err(749): at
java.lang.reflect.Method.invokeNative(Native Method)
04-16 11:31:25.043: W/System.err(749): at
java.lang.reflect.Method.invoke(Method.java:515)
04-16 11:31:25.043: W/System.err(749): at
com.couchbase.lite.router.Router.start(Router.java:443)
04-16 11:31:25.043: W/System.err(749): at
com.couchbase.lite.listener.LiteServlet.service(LiteServlet.java:102)
04-16 11:31:25.043: W/System.err(749): at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
04-16 11:31:25.043: W/System.err(749): at
Acme.Serve.Serve$ServeConnection.runServlet(Serve.java:2251)
04-16 11:31:25.053: W/System.err(749): at
Acme.Serve.Serve$ServeConnection.parseRequest(Serve.java:2176)
04-16 11:31:25.053: W/System.err(749): at
Acme.Serve.Serve$ServeConnection.run(Serve.java:1988)
04-16 11:31:25.053: W/System.err(749): at
Acme.Utils$ThreadPool$PooledThread.run(Utils.java:1223)
04-16 11:31:25.053: W/System.err(749): at
java.lang.Thread.run(Thread.java:841)
04-16 11:31:25.053: E/Database(749):
com.couchbase.lite.CouchbaseLiteException: No existing revision found with
doc id: 4237ce67-922b-46a9-9d5d-54f0c6504cc5
3. Any clues why is acting like that and how to do it properly?
3. Using phonegap, if i want to discover the other peers, how would you do
that?
I was thinking to make a plugin doing that in native language on Android
and iOS, using for instance Bonjour service.
Thank you in advance for your help,
Bart
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