Move clientId from constant.

eth_p2p/peer_pool.nim

@@ -17,6 +17,7 @@ type
     keyPair: KeyPair
     networkId: int
     minPeers: int
+    clientId: string
     discovery: DiscoveryProtocol
     lastLookupTime: float
     connectedNodes: Table[Node, Peer]
@@ -33,14 +34,15 @@ const
   connectLoopSleepMs = 2000
 
 proc newPeerPool*(chainDb: AsyncChainDb, networkId: int, keyPair: KeyPair,
-                  discovery: DiscoveryProtocol, minPeers = 10): PeerPool =
+                  discovery: DiscoveryProtocol, clientId: string,
+                  listenPort = Port(30303), minPeers = 10): PeerPool =
   result.new()
   result.keyPair = keyPair
   result.minPeers = minPeers
   result.networkId = networkId
   result.discovery = discovery
   result.connectedNodes = initTable[Node, Peer]()
-  result.listenPort = Port(30303)
+  result.listenPort = listenPort
 
 template ensureFuture(f: untyped) = asyncCheck f
 
@@ -73,7 +75,7 @@ proc connect(p: PeerPool, remote: Node): Future[Peer] {.async.} =
     debug "Skipping ", remote, "; already connected to it"
     return nil
 
-  result = await remote.rlpxConnect(p.keyPair, p.listenPort)
+  result = await remote.rlpxConnect(p.keyPair, p.listenPort, p.clientId)
 
   # expected_exceptions = (
   #   UnreachablePeer, TimeoutError, PeerConnectionLost, HandshakeFailure)

eth_p2p/rlpx.nim

@@ -73,7 +73,6 @@ type
 
 const
   baseProtocolVersion = 4
-  clienId = "Nimbus 0.1.0"
 
 # TODO: Usage of this variables causes GCSAFE problems.
 var
@@ -536,8 +535,8 @@ proc initSecretState(hs: var Handshake, authMsg, ackMsg: openarray[byte],
   initSecretState(secrets, p.secretsState)
   burnMem(secrets)
 
-proc rlpxConnect*(remote: Node, myKeys: KeyPair,
-                  listenPort: Port): Future[Peer] {.async.} =
+proc rlpxConnect*(remote: Node, myKeys: KeyPair, listenPort: Port,
+                  clientId: string): Future[Peer] {.async.} =
   new result
   result.remote = remote
   let ta = initTAddress(remote.node.address.ip, remote.node.address.tcpPort)
@@ -571,7 +570,7 @@ proc rlpxConnect*(remote: Node, myKeys: KeyPair,
     # if handshake.remoteHPubkey != remote.node.pubKey:
     #   raise newException(Exception, "Remote pubkey is wrong")
 
-    discard result.hello(baseProtocolVersion, clienId, rlpxCapabilities,
+    discard result.hello(baseProtocolVersion, clientId, rlpxCapabilities,
                          uint(listenPort), myKeys.pubkey.getRaw())
 
     var response = await result.nextMsg(p2p.hello, discardOthers = true)
@@ -584,8 +583,8 @@ proc rlpxConnect*(remote: Node, myKeys: KeyPair,
     if not isNil(result.transp):
       result.transp.close()
 
-proc rlpxAccept*(transp: StreamTransport,
-                 myKeys: KeyPair): Future[Peer] {.async.} =
+proc rlpxAccept*(transp: StreamTransport, myKeys: KeyPair,
+                 clientId: string): Future[Peer] {.async.} =
   new result
   result.transp = transp
   var handshake = newHandshake({Responder})
@@ -613,8 +612,9 @@ proc rlpxAccept*(transp: StreamTransport,
 
     var response = await result.nextMsg(p2p.hello, discardOthers = true)
     let listenPort = transp.localAddress().port
-    discard result.hello(baseProtocolVersion, clienId,
-                         rlpxCapabilities, listenPort.uint, myKeys.pubkey.getRaw())
+    discard result.hello(baseProtocolVersion, clientId,
+                         rlpxCapabilities, listenPort.uint,
+                         myKeys.pubkey.getRaw())
 
     if validatePubKeyInHello(response, handshake.remoteHPubkey):
       warn "Remote nodeId is not its public key" # XXX: Do we care?
@@ -669,4 +669,3 @@ when isMainModule:
       dispatchMsgPtr = dispatchMsg
       recvMsgPtr: GcSafeRecvMsg = recvMsg
       acceptPtr: GcSafeAccept = rlpxAccept
-

eth_p2p/server.nim

@@ -18,13 +18,14 @@ type
     keyPair: KeyPair
     address: Address
     networkId: int
+    clientId: string
     discovery: DiscoveryProtocol
     peerPool: PeerPool
 
 proc processIncoming(server: StreamServer,
                      remote: StreamTransport): Future[void] {.async, gcsafe.} =
   var p2p = getUserData[P2PServer](server)
-  let peerfut = remote.rlpxAccept(p2p.keyPair)
+  let peerfut = remote.rlpxAccept(p2p.keyPair, p2p.clientId)
   yield peerfut
   if not peerfut.failed:
     let peer = peerfut.read()
@@ -35,16 +36,18 @@ proc processIncoming(server: StreamServer,
     remote.close()
 
 proc newP2PServer*(keyPair: KeyPair, address: Address, chainDb: AsyncChainDB,
-                   bootstrapNodes: openarray[ENode],
+                   bootstrapNodes: openarray[ENode], clientId: string,
                    networkId: int): P2PServer =
   result.new()
   result.chainDb = chainDb
   result.keyPair = keyPair
   result.address = address
+  result.clientId = clientId
   result.networkId = networkId
   result.discovery = newDiscoveryProtocol(keyPair.seckey, address,
                                           bootstrapNodes)
-  result.peerPool = newPeerPool(chainDb, networkId, keyPair, result.discovery)
+  result.peerPool = newPeerPool(chainDb, networkId, keyPair, result.discovery,
+                                clientId, address.tcpPort)
 
   let ta = initTAddress(address.ip, address.tcpPort)
   result.server = createStreamServer(ta, processIncoming, {ReuseAddr},

tests/tdiscovery.nim

@@ -11,6 +11,8 @@ import sequtils, logging
 import eth_keys, asyncdispatch2, byteutils
 import eth_p2p/[discovery, kademlia, peer_pool, enode]
 
+const clientId = "nim-eth-p2p/0.0.1"
+
 addHandler(newConsoleLogger())
 
 proc startDiscoveryNode(privKey: PrivateKey, address: Address, bootnodes: seq[ENode]): Future[DiscoveryProtocol] {.async.} =
@@ -42,7 +44,9 @@ proc test() {.async.} =
   var nodeAddrs = newSeqOfCap[Address](nodeKeys.len)
   for i in 0 ..< nodeKeys.len: nodeAddrs.add(localAddress(20302 + i))
 
-  var nodes = await all(zip(nodeKeys, nodeAddrs).mapIt(startDiscoveryNode(it.a, it.b, @[bootENode])))
+  var nodes = await all(zip(nodeKeys, nodeAddrs).mapIt(
+    startDiscoveryNode(it.a, it.b, @[bootENode]))
+  )
   nodes.add(bootNode)
 
   for i in nodes:

tests/tserver.nim

@@ -11,6 +11,8 @@ import sequtils
 import eth_keys, asyncdispatch2
 import eth_p2p/[discovery, kademlia, peer_pool, enode, server, rlpx]
 
+const clientId = "nim-eth-p2p/0.0.1"
+
 proc localAddress(port: int): Address =
   let port = Port(port)
   result = Address(udpPort: port, tcpPort: port, ip: parseIpAddress("127.0.0.1"))
@@ -19,11 +21,11 @@ proc test() {.async.} =
   let kp = newKeyPair()
   let address = localAddress(20301)
 
-  let s = newP2PServer(kp, address, nil, [], 1)
+  let s = newP2PServer(kp, address, nil, [], clientId, 1)
   s.start()
 
   let n = newNode(initENode(kp.pubKey, address))
-  let peer = await rlpxConnect(n, newKeyPair(), Port(1234))
+  let peer = await rlpxConnect(n, newKeyPair(), Port(1234), clientId)
 
   doAssert(not peer.isNil)