Add WebSocket support to Fluffy.

fluffy/conf.nim

@@ -174,11 +174,12 @@ type
       name: "metrics-port"
     .}: Port
 
-    rpcEnabled* {.desc: "Enable the JSON-RPC server", defaultValue: false, name: "rpc".}:
-      bool
+    rpcEnabled* {.
+      desc: "Enable the HTTP JSON-RPC server", defaultValue: false, name: "rpc"
+    .}: bool
 
     rpcPort* {.
-      desc: "HTTP port for the JSON-RPC server", defaultValue: 8545, name: "rpc-port"
+      desc: "Port for the HTTP JSON-RPC server", defaultValue: 8545, name: "rpc-port"
     .}: Port
 
     rpcAddress* {.
@@ -188,6 +189,22 @@ type
       name: "rpc-address"
     .}: IpAddress
 
+    wsEnabled* {.
+      desc: "Enable the WebSocket JSON-RPC server", defaultValue: false, name: "ws"
+    .}: bool
+
+    wsPort* {.
+      desc: "Port for the WebSocket JSON-RPC server",
+      defaultValue: 8546,
+      name: "ws-port"
+    .}: Port
+
+    wsCompression* {.
+      desc: "Enable compression for the WebSocket JSON-RPC server",
+      defaultValue: false,
+      name: "ws-compression"
+    .}: bool
+
     tableIpLimit* {.
       hidden,
       desc:

fluffy/fluffy.nim

@@ -208,36 +208,49 @@ proc run(config: PortalConf) {.raises: [CatchableError].} =
   node.start()
 
   ## Start the JSON-RPC APIs
-  if config.rpcEnabled:
-    let ta = initTAddress(config.rpcAddress, config.rpcPort)
-
-    let rpcHttpServer = RpcHttpServer.new()
-    # Note: Set maxRequestBodySize to 4MB instead of 1MB as there are blocks
-    # that reach that limit (in hex, for gossip method).
-    rpcHttpServer.addHttpServer(ta, maxRequestBodySize = 4 * 1_048_576)
 
-    rpcHttpServer.installDiscoveryApiHandlers(d)
-    rpcHttpServer.installWeb3ApiHandlers()
+  proc setupRpcServer(
+      rpcServer: RpcHttpServer | RpcWebSocketServer
+  ) {.raises: [CatchableError].} =
+    rpcServer.installDiscoveryApiHandlers(d)
+    rpcServer.installWeb3ApiHandlers()
     if node.stateNetwork.isSome():
-      rpcHttpServer.installPortalApiHandlers(
+      rpcServer.installPortalApiHandlers(
         node.stateNetwork.value.portalProtocol, "state"
       )
     if node.historyNetwork.isSome():
-      rpcHttpServer.installEthApiHandlers(
+      rpcServer.installEthApiHandlers(
         node.historyNetwork.value, node.beaconLightClient, node.stateNetwork
       )
-      rpcHttpServer.installPortalApiHandlers(
+      rpcServer.installPortalApiHandlers(
         node.historyNetwork.value.portalProtocol, "history"
       )
-      rpcHttpServer.installPortalDebugApiHandlers(
+      rpcServer.installPortalDebugApiHandlers(
         node.historyNetwork.value.portalProtocol, "history"
       )
     if node.beaconNetwork.isSome():
-      rpcHttpServer.installPortalApiHandlers(
+      rpcServer.installPortalApiHandlers(
         node.beaconNetwork.value.portalProtocol, "beacon"
       )
 
-    rpcHttpServer.start()
+    rpcServer.start()
+
+  if config.rpcEnabled:
+    let
+      ta = initTAddress(config.rpcAddress, config.rpcPort)
+      rpcHttpServer = RpcHttpServer.new()
+    # Note: Set maxRequestBodySize to 4MB instead of 1MB as there are blocks
+    # that reach that limit (in hex, for gossip method).
+    rpcHttpServer.addHttpServer(ta, maxRequestBodySize = 4 * 1_048_576)
+
+    setupRpcServer(rpcHttpServer)
+
+  if config.wsEnabled:
+    let
+      ta = initTAddress(config.rpcAddress, config.wsPort)
+      rpcWsServer = newRpcWebSocketServer(ta, compression = config.wsCompression)
+
+    setupRpcServer(rpcWsServer)
 
   runForever()