chore: fix c-bindings example (#915)

README.md

@@ -85,7 +85,7 @@ make mobile-ios
 - [Send messages using Waku Lightpush](docs/api/lightpush.md)
 - [Encrypting and decrypting Waku Messages](docs/api/encoding.md)
 - [Retrieve message history using Waku Store](docs/api/store.md)
-- [C Bindings](library/README.md)
+- [C Bindings](library/c/README.md)
 - [Waku Specs](https://rfc.vac.dev/spec), has information of [waku topics](https://rfc.vac.dev/spec/23/), wakuv1/[wakuv2](https://rfc.vac.dev/spec/14/) message, [rln relay](https://rfc.vac.dev/spec/58/) etc.
 - [Enr](https://eips.ethereum.org/EIPS/eip-778), [Enrtree](https://eips.ethereum.org/EIPS/eip-1459)
 - [devp2p](https://github.com/ethereum/go-ethereum/tree/master/cmd/devp2p) tool for playing with enr/entree sync tree. [Tutorial](https://geth.ethereum.org/docs/developers/geth-developer/dns-discovery-setup)

examples/c-bindings/main.c

@@ -154,9 +154,7 @@ int main(int argc, char *argv[])
 
   // To use dns discovery, and retrieve nodes from a enrtree url
   char *discoveredNodes = NULL;
-  waku_dns_discovery("enrtree://"
+  waku_dns_discovery("enrtree://AO47IDOLBKH72HIZZOXQP6NMRESAN7CHYWIBNXDXWRJRZWLODKII6@test.wakuv2.nodes.status.im",
-                     "AOGECG2SPND25EEFMAJ5WF3KSGJNSGV356DSTL2YVLLZWIV"
-                     "6SAYBM@test.waku.nodes.status.im",
                      "", 0, on_response, (void *)&discoveredNodes);
   printf("Discovered nodes: %s\n", discoveredNodes);
 

examples/chat2/README.md

@@ -17,6 +17,12 @@ To start the `chat2` application in its most basic form, run the following from
 ./build/chat2
 ```
 
+You may need to set DNS server if behind a VPN,
+
+```
+./build/chat2 --dns-discovery-name-server 8.8.8.8
+```
+
 ## Specifying a static peer
 
 In order to connect to a *specific* node as [`relay`](https://specs.vac.dev/specs/waku/v2/waku-relay) peer, define that node's `multiaddr` as a `staticnode` when starting the app:

examples/filter2/README.md

@@ -27,7 +27,7 @@ The app will run 2 nodes ("full" node and "light" node), with light node subscri
 3. Light node submits a FilterSubscribeRequest through WakuFilterLightNode.Subscribe. This request is submitted to a particular peer.
 Filter is stored in WakuFilterLightNode.subscriptions map. That's it.
 4. Now we wait on WakuFilterLightNode.onRequest to process any further messages.
-5. On receiving a message check and notify all subscribers on relevant channel (which is part of subscription obbject).
+5. On receiving a message check and notify all subscribers on relevant channel (which is part of subscription object).
 6. If a broadcaster is specified, 
   WakuNode.Subscribe has a message loop extracting WakuMessages from a wakurelay.Subscription object. It denotes a pubsub topic subscription. All envelopes are then submitted to node.broadcaster.
 ### Full Node

waku/v2/protocol/relay/options.go

@@ -14,7 +14,7 @@ func WithPubSubTopic(pubsubTopic string) PublishOption {
 	}
 }
 
-// WithPubSubTopic is used to indicate that the message should be broadcasted in the default pubsub topic
+// WithDefaultPubsubTopic is used to indicate that the message should be broadcasted in the default pubsub topic
 func WithDefaultPubsubTopic() PublishOption {
 	return func(params *publishParameters) {
 		params.pubsubTopic = DefaultWakuTopic