fix: upsert peer address on connect and bump to v0.7.0-rc.27

PeerStore::add_peer previously returned early if a peer already existed,
silently discarding address updates. When an LSP node's IP changed, the
reconnection loop would indefinitely retry the stale cached address.

This commit:
1. Changes add_peer to upsert: if the peer exists but the address
   differs, update and re-persist it.
2. Reorders Node::connect to persist the peer *before* attempting the
   connection, so the new address is saved even if the connection
   races with an in-flight reconnection attempt at the old address.
3. Adds unit tests for the upsert logic and an integration test for
   persist-on-failed-connect.

See upstream issue lightningdevkit#700.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: ben-kaufman

CHANGELOG.md

@@ -1,7 +1,12 @@
-# 0.7.0-rc.25 (Synonym Fork)
+# 0.7.0-rc.27 (Synonym Fork)
 
 ## Bug Fixes
 
+- Fixed `PeerStore::add_peer` silently ignoring address updates for existing peers. When a peer's
+  IP address changes (e.g., LSP node migration), `add_peer` now upserts the socket address and
+  re-persists, instead of returning early. This fixes the issue where ldk-node's reconnection loop
+  would indefinitely use a stale cached IP after an LSP node IP change.
+  (See [upstream issue #700](https://github.com/lightningdevkit/ldk-node/issues/700))
 - Backported upstream Electrum sync fix (PR #4341): Skip unconfirmed `get_history` entries in
   `ElectrumSyncClient`. Previously, mempool entries (height=0 or -1) were incorrectly treated as
   confirmed, causing `get_merkle` to fail for 0-conf channel funding transactions.

Cargo.toml

@@ -4,7 +4,7 @@ exclude = ["bindings/uniffi-bindgen"]
 
 [package]
 name = "ldk-node"
-version = "0.7.0-rc.25"
+version = "0.7.0-rc.27"
 authors = ["Elias Rohrer <dev@tnull.de>"]
 homepage = "https://lightningdevkit.org/"
 license = "MIT OR Apache-2.0"

Package.swift

@@ -3,8 +3,8 @@
 
 import PackageDescription
 
-let tag = "v0.7.0-rc.25"
-let checksum = "3abf83a20d41a79337b9eae1c86da375b49423d5fe5176e4876b76285fde44ee"
+let tag = "v0.7.0-rc.27"
+let checksum = "c09c40d6bc96c0850f0f259c6a498893becad81a62ab8df877e0b06d5b0057a8"
 let url = "https://github.com/synonymdev/ldk-node/releases/download/\(tag)/LDKNodeFFI.xcframework.zip"
 
 let package = Package(

bindings/kotlin/ldk-node-android/gradle.properties

@@ -2,4 +2,4 @@ org.gradle.jvmargs=-Xmx1536m
 android.useAndroidX=true
 android.enableJetifier=true
 kotlin.code.style=official
-libraryVersion=0.7.0-rc.25
+libraryVersion=0.7.0-rc.27