Add err handlers to swarm connections (#70)

guide/making-a-pear-desktop-app.md

@@ -203,6 +203,7 @@ swarm.on('connection', (peer) => {
   // name incoming peers after first 6 chars of its public key as hex
   const name = b4a.toString(peer.remotePublicKey, 'hex').substr(0, 6)
   peer.on('data', message => onMessageAdded(name, message))
+  peer.on('error', e => console.log(`Connection error: ${e}`))
 })
 
 // When there's updates to the swarm, update the peers count

guide/making-a-pear-terminal-app.md

@@ -41,6 +41,7 @@ swarm.on('connection', peer => {
   const name = b4a.toString(peer.remotePublicKey, 'hex').substr(0, 6)
   console.log(`[info] New peer joined, ${name}`)
   peer.on('data', message => appendMessage({ name, message }))
+  peer.on('error', e => console.log(`Connection error: ${e}`))
 })
 swarm.on('update', () => {
   console.log(`[info] Number of connections is now ${swarm.connections.size}`)

howto/connect-to-many-peers-by-topic-with-hyperswarm.md

@@ -37,6 +37,7 @@ swarm.on('connection', conn => {
   conns.push(conn)
   conn.once('close', () => conns.splice(conns.indexOf(conn), 1))
   conn.on('data', data => console.log(`${name}: ${data}`))
+  conn.on('error', e => console.log(`Connection error: ${e}`))
 })
 
 // Broadcast stdin to all connections