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status-go/services/shhext
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Dmitry Shulyak d32cd18c09
Fix channel subscriber that was blocking sending new requests (#1465) 
In RequestMessagesSync subscriber is listening to a feed where all whisper
events are posted. After we received event with a request hash - subscriber will
stop actively consuming messages from a feed, as a subscription channel will
get overflow and whole feed will get blocked.

Some events are posted to a feed before request is sent, so blocked feed results
in blocked sending.

Now we will unsubscribe after relevant event was received, and terminate subscriber
explicitly by timeout.
 		2019-05-20 11:10:26 +03:00
..
chat Add postgres 2019-05-15 11:01:34 +02:00
dedup Add confirm messages processed by ID (#1375) 2019-02-19 13:58:42 +01:00
mailservers Add request with retries api call 2019-01-24 14:31:56 +02:00
README.md Implement mailserver canary service. Closes #1086 2018-08-07 17:17:59 +02:00
api.go Fix channel subscriber that was blocking sending new requests (#1465) 2019-05-20 11:10:26 +03:00
api_test.go Fix channel subscriber that was blocking sending new requests (#1465) 2019-05-20 11:10:26 +03:00
context.go Execute writes atomically only after request was processed without errors (#1454) 2019-05-06 09:33:19 +03:00
envelopes.go Notify users that envelope was discarded and retry sending it (#1446) 2019-04-30 09:46:12 +03:00
envelopes_test.go Re-send user payload if previously sent envelope wasn't acknowledged (#1386) 2019-03-01 14:36:21 +01:00
history.go Execute writes atomically only after request was processed without errors (#1454) 2019-05-06 09:33:19 +03:00
history_test.go Execute writes atomically only after request was processed without errors (#1454) 2019-05-06 09:33:19 +03:00
mailrequests.go Split shhext.tracker into envelopes and mail monitors 2019-02-22 09:33:46 +02:00
mailrequests_test.go Split shhext.tracker into envelopes and mail monitors 2019-02-22 09:33:46 +02:00
requests.go Notify users that envelope was discarded and retry sending it (#1446) 2019-04-30 09:46:12 +03:00
requests_test.go Prevent frequent requests with same topics 2019-01-18 14:52:33 +02:00
service.go Execute writes atomically only after request was processed without errors (#1454) 2019-05-06 09:33:19 +03:00
service_test.go Execute writes atomically only after request was processed without errors (#1454) 2019-05-06 09:33:19 +03:00
signal.go Notify users that envelope was discarded and retry sending it (#1424) 2019-04-02 13:40:45 +03:00

README.md

Whisper API Extension

API

shhext_getNewFilterMessages

Accepts the same input as shh_getFilterMessages.

Returns

Returns a list of whisper messages matching the specified filter. Filters out the messages already confirmed received by shhext_confirmMessagesProcessed

Deduplication is made using the whisper envelope content and topic only, so the same content received in different whisper envelopes will be deduplicated.

shhext_confirmMessagesProcessed

Confirms whisper messages received and processed on the client side. These messages won't appear anymore when shhext_getNewFilterMessages is called.

Parameters

Gets a list of whisper envelopes.

shhext_post

Accepts same input as shh_post.

Returns

DATA, 32 Bytes - the envelope hash

shhext_requestMessages

Sends a request for historic messages to a mail server.

Parameters
  1. Object - The message request object:
  • mailServerPeer:URL - Mail servers' enode addess
  • from:QUANTITY - (optional) Lower bound of time range as unix timestamp, default is 24 hours back from now
  • to:QUANTITY- (optional) Upper bound of time range as unix timestamp, default is now
  • topic:DATA, 4 Bytes - Regular whisper topic
  • symKeyID:DATA- ID of a symmetric key to authenticate to mail server, derived from mail server password
Returns

Boolean - returns true if the request was send, otherwise false.

Signals

Sends sent signal once per envelope.

{
  "type": "envelope.sent",
  "event": {
    "hash": "0xea0b93079ed32588628f1cabbbb5ed9e4d50b7571064c2962c3853972db67790"
  }
}

Sends expired signal if envelope dropped from whisper local queue before it was sent to any peer on the network.

{
  "type": "envelope.expired",
  "event": {
    "hash": "0x754f4c12dccb14886f791abfeb77ffb86330d03d5a4ba6f37a8c21281988b69e"
  }
}