[RPC][Net] Add getnodeaddresses RPC command #2503
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New getnodeaddresses call gives access via RPC to the peers known by the node. It may be useful for PIVX wallets to broadcast their transactions over tor for improved privacy without using the centralized DNS seeds. getnodeaddresses is very similar to the getaddr p2p method. Tests the new rpc call by feeding IP address to a test node via the p2p protocol, then obtaining someone of those addresses with getnodeaddresses and checking that they are a subset.
CAddrMan.GetAddr() would previously limit the number and percentage of addresses returned (to ADDRMAN_GETADDR_MAX (1000) and ADDRMAN_GETADDR_MAX_PCT (23) respectively). Instead, make it the callers responsibility to specify the maximum addresses and percentage they want returned. For net_processing, the maximums are MAX_ADDR_TO_SEND (1000) and MAX_PCT_ADDR_TO_SEND (23). For rpc/net, the maximum is specified by the client.
Allows addresses to be added to Address Manager for testing.
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Implement a new RPC command (
getnodeaddresses) that provides RPC access to the node's addrman. It may be useful for PIVX wallets to broadcast their transactions over tor for improved privacy without using the centralized DNS seeds.I've included upstream improvements to this feature here as well, and this RPC command was used to scrape the Tor v3 hardcoded seed nodes added in #2502
Based on the following upstream PRs: