AWS.ApiGatewayManagementApi() postToConnection no initial response detected on client - websocket

Question

I have a lambda function that returns a message to the client.
function replyToMessage (messageText,connectionId) {
const data = {message:messageText}
const params = {
ConnectionId : connectionId,
Data: Buffer.from(JSON.stringify(data))
}
return api.postToConnection(params).promise()
.then(data => {})
.catch(error => {console.log("error",error)})
}
This code is called once when the connection is made and I get a response to my client. When I call the function again with a different endpoint, it doesn't send a response to my client. However, when I call it a third time, I get the response to my client from the second call. Here's my switch when the Lambda function is called.
switch(route) {
case "$connect":
break
case "$disconnect":
break
case "connectTo":
await connectToService(JSON.parse(event.body).eventId,connectionId)
await replyToMessage("Connected eventId to connId",connectionId)
break
case "disconnectFrom":
await disConnectToService(JSON.parse(event.body).eventId,connectionId)
break
case "project":
responseItems = await getBroadcastIds (JSON.parse(event.body).eventId,JSON.parse(event.body).sourceId,connectionId)
console.log(responseItems)
responseItems.Items.forEach(async function(item) {
await replyToMessage(JSON.parse(event.body).sourceId,item.connectionId)
})
responseItems = []
break
default :
console.log("Unknown route", route)

Answer 1

The issue appears to be the async forEach loop. Switching to the following resolves the issue.
for (const item of responseItems.Items) {
console.log("Sending to:",item.connectionId);
await replyToMessage(JSON.parse(event.body).sourceId,item.connectionId)
}
See this post for the answer that led to this resolution. Using async/await with a forEach loop