feat(c-bindings): update bootnodes

library/README.md

@@ -1219,6 +1219,27 @@ For example:
 }
 ```
 
+### `extern char* waku_discv5_update_bootnodes(char* bootnodes)`
+Update the bootnode list used for discovering new peers via DiscoveryV5
+
+**Parameters**
+
+1. `char* bootnodes`: JSON array containing the bootnode ENRs i.e. `["enr:...", "enr:..."]`
+
+**Returns**
+
+A [`JsonResponse`](#jsonresponse-type).
+If the execution is successful, the `result` field is set to `true`.
+
+For example:
+
+```json
+{
+  "result": true
+}
+```
+
+
 ### `extern char* waku_discv5_stop()`
 Stops the DiscoveryV5 service
 

library/api_discovery.go

@@ -7,7 +7,9 @@ import (
 )
 
 // Returns a list of objects containing the peerID, enr and multiaddresses for each node found
-//  given a url to a DNS discoverable ENR tree
+//
+//	given a url to a DNS discoverable ENR tree
+//
 // The nameserver can optionally be specified to resolve the enrtree url. Otherwise NULL or
 // empty to automatically use the default system dns.
 // If ms is greater than 0, the subscription must happen before the timeout
@@ -18,3 +20,12 @@ func waku_dns_discovery(url *C.char, nameserver *C.char, ms C.int) *C.char {
 	response := mobile.DnsDiscovery(C.GoString(url), C.GoString(nameserver), int(ms))
 	return C.CString(response)
 }
+
+// Update the bootnode list used for discovering new peers via DiscoveryV5
+// The bootnodes param should contain a JSON array containing the bootnode ENRs i.e. `["enr:...", "enr:..."]`
+//
+//export waku_discv5_update_bootnodes
+func waku_discv5_update_bootnodes(bootnodes *C.char) *C.char {
+	response := mobile.SetBootnodes(C.GoString(bootnodes))
+	return C.CString(response)
+}

mobile/api_discovery.go

@@ -2,9 +2,11 @@ package gowaku
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"time"
 
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/waku-org/go-waku/waku/v2/dnsdisc"
 )
 
@@ -79,3 +81,38 @@ func StopDiscoveryV5() string {
 	wakuState.node.DiscV5().Stop()
 	return MakeJSONResponse(nil)
 }
+
+func SetBootnodes(bootnodes string) string {
+	if wakuState.node == nil {
+		return MakeJSONResponse(errWakuNodeNotReady)
+	}
+	if wakuState.node.DiscV5() == nil {
+		return MakeJSONResponse(errors.New("DiscV5 is not mounted"))
+	}
+
+	var tmp []json.RawMessage
+	if err := json.Unmarshal([]byte(bootnodes), &tmp); err != nil {
+		return MakeJSONResponse(err)
+	}
+
+	var enrList []string
+	for _, el := range tmp {
+		var enr string
+		if err := json.Unmarshal(el, &enr); err != nil {
+			return MakeJSONResponse(err)
+		}
+		enrList = append(enrList, enr)
+	}
+
+	var nodes []*enode.Node
+	for _, addr := range enrList {
+		node, err := enode.Parse(enode.ValidSchemes, addr)
+		if err != nil {
+			return MakeJSONResponse(err)
+		}
+		nodes = append(nodes, node)
+	}
+
+	err := wakuState.node.DiscV5().SetBootnodes(nodes)
+	return MakeJSONResponse(err)
+}