Merge bitcoin/bitcoin#29561: Fixed seeds update for 27.0

7ab54397f8b818b0474d4e9d4f5db45abb6fc249 seeds: Update testnet seeds (Ava Chow)
34a233b6d875976f354094f67b363a4d7b63ad2f seeds: Update mainnet seeds (Ava Chow)
9701bc435fe16fb7c285c682d87c44972f1c23b9 makeseeds: Check i2p seeds too (Ava Chow)
a8ec9eede4c745c6b6fd76974816ffad8034129a makeseeds: Update PATTERN_AGENT (Ava Chow)

Pull request description:

  The ipv4 and ipv6 seeds are updated from sipa's crawler, as outlined in contrib/seeds/README.md. The onion and i2p seeds are pulled from my node's addrman using `getrawaddrman` and then a connection was made to each node to retrieve the current service flags, block height, and user agent string before filtering through makeseeds.py. The CJDNS nodes were not updated as my node is not connected to that network.

  makeseeds.py is also updated for more recent user agent strings as well as being able to handle i2p addresses.

  Also updated the testnet seeds.

ACKs for top commit:
  fanquake:
    ACK 7ab54397f8b818b0474d4e9d4f5db45abb6fc249

Tree-SHA512: 5edba63d51116e5d9a8ae23561ba5a311f4df88c555c60b2d7a6066e63f8cdfd256be7dac9acea4b370879d0d3c3a4b55328c15de4284b5f0d86e6cac2e5ba9b

contrib/seeds/makeseeds.py

@@ -27,6 +27,7 @@ MIN_BLOCKS = 730000
 PATTERN_IPV4 = re.compile(r"^((\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})):(\d+)$")
 PATTERN_IPV6 = re.compile(r"^\[([0-9a-z:]+)\]:(\d+)$")
 PATTERN_ONION = re.compile(r"^([a-z2-7]{56}\.onion):(\d+)$")
+PATTERN_I2P = re.compile(r"^([a-z2-7]{52}\.b32.i2p):(\d+)$")
 PATTERN_AGENT = re.compile(
     r"^/Satoshi:("
     r"0.14.(0|1|2|3|99)|"
@@ -40,7 +41,8 @@ PATTERN_AGENT = re.compile(
     r"22.(0|1|99)|"
     r"23.(0|1|99)|"
     r"24.(0|1|99)|"
-    r"25.99"
+    r"25.(0|1|99)|"
+    r"26.(0|99)|"
     r")")
 
 def parseline(line: str) -> Union[dict, None]:
@@ -65,7 +67,13 @@ def parseline(line: str) -> Union[dict, None]:
         if m is None:
             m = PATTERN_ONION.match(sline[0])
             if m is None:
-                return None
+                m = PATTERN_I2P.match(sline[0])
+                if m is None:
+                    return None
+                else:
+                    net = 'i2p'
+                    ipstr = sortkey = m.group(1)
+                    port = int(m.group(2))
             else:
                 net = 'onion'
                 ipstr = sortkey = m.group(1)
@@ -140,6 +148,7 @@ def filterbyasn(asmap: ASMap, ips: list[dict], max_per_asn: dict, max_per_net: i
     # Sift out ips by type
     ips_ipv46 = [ip for ip in ips if ip['net'] in ['ipv4', 'ipv6']]
     ips_onion = [ip for ip in ips if ip['net'] == 'onion']
+    ips_i2p = [ip for ip in ips if ip['net'] == 'i2p']
 
     # Filter IPv46 by ASN, and limit to max_per_net per network
     result = []
@@ -163,6 +172,7 @@ def filterbyasn(asmap: ASMap, ips: list[dict], max_per_asn: dict, max_per_net: i
 
     # Add back Onions (up to max_per_net)
     result.extend(ips_onion[0:max_per_net])
+    result.extend(ips_i2p[0:max_per_net])
     return result
 
 def ip_stats(ips: list[dict]) -> str:
@@ -172,7 +182,7 @@ def ip_stats(ips: list[dict]) -> str:
         if ip is not None:
             hist[ip['net']] += 1
 
-    return f"{hist['ipv4']:6d} {hist['ipv6']:6d} {hist['onion']:6d}"
+    return f"{hist['ipv4']:6d} {hist['ipv6']:6d} {hist['onion']:6d} {hist['i2p']:6d}"
 
 def parse_args():
     argparser = argparse.ArgumentParser(description='Generate a list of bitcoin node seed ip addresses.')
@@ -194,7 +204,7 @@ def main():
     ips = [parseline(line) for line in lines]
     print('Done.', file=sys.stderr)
 
-    print('\x1b[7m  IPv4   IPv6  Onion Pass                                               \x1b[0m', file=sys.stderr)
+    print('\x1b[7m  IPv4   IPv6  Onion  I2P Pass                                               \x1b[0m', file=sys.stderr)
     print(f'{ip_stats(ips):s} Initial', file=sys.stderr)
     # Skip entries with invalid address.
     ips = [ip for ip in ips if ip is not None]
@@ -208,11 +218,12 @@ def main():
     # Require service bit 1.
     ips = [ip for ip in ips if (ip['service'] & 1) == 1]
     print(f'{ip_stats(ips):s} Require service bit 1', file=sys.stderr)
-    # Require at least 50% 30-day uptime for clearnet, 10% for onion.
+    # Require at least 50% 30-day uptime for clearnet, 10% for onion and i2p.
     req_uptime = {
         'ipv4': 50,
         'ipv6': 50,
         'onion': 10,
+        'i2p' : 10,
     }
     ips = [ip for ip in ips if ip['uptime'] > req_uptime[ip['net']]]
     print(f'{ip_stats(ips):s} Require minimum uptime', file=sys.stderr)

contrib/seeds/nodes_test.txt

@@ -1,89 +1,29 @@
-# List of fixed seed nodes for testnet
-
-# Onion nodes, last verified 2022-08 for minimal torv3 bootstrap support
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