status-go/mailserver
Andrea Maria Piana d60a6713fe Enable mailserver cycle by default
This commit enables mailserver cycle logic by default and make a few
changes:

1) Nodes are graylisted instead of being blacklisted for a set amount of
   time. The reason is that if we blacklist, any cut in connectivity
   might result in long delays before reconnecting, especially on spotty
   connections.

2) Fixes an issue on the devp2p server, whereby the node would not
   connect to one of the static nodes since all the connection slots
   where filled. The fix is a bit inelegant, it always connects to
   static nodes, ignoring maxpeers, but it's tricky to get it to work
   since the code is clearly not written to select a specific node.

3) Adds support to pinned mailservers

4) Add retries to mailservers requests. It uses a closure for now, I
   think we should eventually have a channel etc, but I'd leave that for
   later.
2022-03-19 08:56:22 +00:00
..
2019-05-15 11:01:34 +02:00
2020-01-06 10:17:23 +01:00
2021-05-21 07:22:58 +02:00
2021-05-21 07:22:58 +02:00

MailServer

This document is meant to collect various information about our MailServer implementation.

Syncing between mail servers

It might happen that one mail server is behind other due to various reasons like a machine being down for a few minutes etc.

There is an option to fix such a mail server:

  1. SSH to a machine where this broken mail server runs,
  2. Add a mail server from which you want to sync:
# sudo might be not needed in your setup
$ echo '{"jsonrpc":"2.0","method":"admin_addPeer", "params": ["enode://c42f368a23fa98ee546fd247220759062323249ef657d26d357a777443aec04db1b29a3a22ef3e7c548e18493ddaf51a31b0aed6079bd6ebe5ae838fcfaf3a49@206.189.243.162:30504"], "id":1}' | \
    sudo socat -d -d - UNIX-CONNECT:/docker/statusd-mail/data/geth.ipc
  1. Mark it as a trusted peer:
# sudo might be not needed in your setup
$ echo '{"jsonrpc":"2.0","method":"shh_markTrustedPeer", "params": ["enode://c42f368a23fa98ee546fd247220759062323249ef657d26d357a777443aec04db1b29a3a22ef3e7c548e18493ddaf51a31b0aed6079bd6ebe5ae838fcfaf3a49@206.189.243.162:30504"], "id":1}' | \
    sudo socat -d -d - UNIX-CONNECT:/docker/statusd-mail/data/geth.ipc
  1. Finally, trigger the sync command:
# sudo might be not needed in your setup
$ echo '{"jsonrpc":"2.0","method":"shhext_syncMessages","params":[{"mailServerPeer":"enode://c42f368a23fa98ee546fd247220759062323249ef657d26d357a777443aec04db1b29a3a22ef3e7c548e18493ddaf51a31b0aed6079bd6ebe5ae838fcfaf3a49@206.189.243.162:30504", "to": 1550479953, "from": 1550393583, "limit": 1000}],"id":1}' | \
    sudo socat -d -d - UNIX-CONNECT:/docker/statusd-mail/data/geth.ipc

You can add "followCursor": true if you want it to automatically download messages until the cursor is empty meaning all data was synced.

Debugging

To verify that your mail server received any responses, watch logs and seek for logs like this:

INFO [02-18|09:08:54.257] received sync response count=217 final=false err= cursor=[]

And it should finish with:

INFO [02-18|09:08:54.431] received sync response count=0 final=true err= cursor=[]