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i2p: lower the number of tunnels for transient sessions

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This will lower the load on the I2P network. Since we use one transient
session for connecting to just one peer, a higher number of tunnels is
unnecessary.

This was suggested in:
https://github.com/bitcoin/bitcoin/issues/26754#issuecomment-1365449401
https://github.com/bitcoin/bitcoin/issues/26754#issuecomment-1367356129

The options are documented in:
https://geti2p.net/en/docs/protocol/i2cp#options

A tunnel is unidirectional, so even if we make a single outbound
connection we still need an inbound tunnel to receive the messages sent
to us over that connection.

Alleviates: https://github.com/bitcoin/bitcoin/issues/26754

Github-Pull: #26837
Rebased-From: 801b405f85
This commit is contained in:
Vasil Dimov 2023-01-06 17:11:26 +01:00 • committed by fanquake
parent 5027e93b6a
commit 29cdf42226
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1 changed files with 3 additions and 1 deletions
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4
src/i2p.cpp
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@ -379,7 +379,9 @@ void Session::CreateIfNotCreatedAlready()
// in the reply in DESTINATION=.
const Reply& reply = SendRequestAndGetReply(
*sock,
strprintf("SESSION CREATE STYLE=STREAM ID=%s DESTINATION=TRANSIENT SIGNATURE_TYPE=7", session_id));
strprintf("SESSION CREATE STYLE=STREAM ID=%s DESTINATION=TRANSIENT SIGNATURE_TYPE=7 "
"inbound.quantity=1 outbound.quantity=1",
session_id));
m_private_key = DecodeI2PBase64(reply.Get("DESTINATION"));
} else {