How to trigger function from javascript websocket
I am new to websocket. I am currently listening to a websocket in my node.js middleware application. Once I receive a message I have to store that message on database.
const ws = new WebSocket("ws://localhost:3000");
ws.on("message", (event) => {
console.log("connected to DB");
testConnection();
});
Whenever a new message is received the testConnection function should be triggered.
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
I am trying to test connection for now.
But whenever a new message is received the testConnection function is not getting called.
I would like to know how to call a function when receiving a new message.
javascript websocket
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
add a comment |
I am new to websocket. I am currently listening to a websocket in my node.js middleware application. Once I receive a message I have to store that message on database.
const ws = new WebSocket("ws://localhost:3000");
ws.on("message", (event) => {
console.log("connected to DB");
testConnection();
});
Whenever a new message is received the testConnection function should be triggered.
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
I am trying to test connection for now.
But whenever a new message is received the testConnection function is not getting called.
I would like to know how to call a function when receiving a new message.
javascript websocket
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
add a comment |
I am new to websocket. I am currently listening to a websocket in my node.js middleware application. Once I receive a message I have to store that message on database.
const ws = new WebSocket("ws://localhost:3000");
ws.on("message", (event) => {
console.log("connected to DB");
testConnection();
});
Whenever a new message is received the testConnection function should be triggered.
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
I am trying to test connection for now.
But whenever a new message is received the testConnection function is not getting called.
I would like to know how to call a function when receiving a new message.
javascript websocket
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
I am new to websocket. I am currently listening to a websocket in my node.js middleware application. Once I receive a message I have to store that message on database.
const ws = new WebSocket("ws://localhost:3000");
ws.on("message", (event) => {
console.log("connected to DB");
testConnection();
});
Whenever a new message is received the testConnection function should be triggered.
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
I am trying to test connection for now.
But whenever a new message is received the testConnection function is not getting called.
I would like to know how to call a function when receiving a new message.
javascript websocket
javascript websocket
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
edited Nov 22 '18 at 9:48
Tony Roczz
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
asked Nov 22 '18 at 8:22
Tony RoczzTony Roczz
74111437
74111437
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You should check out the Websockets docs the message handlers is a callback on the websocket onmessage calling on will just return undefined.
const ws = new WebSocket("ws://localhost:3000");
ws.onmessage = (event) => {
console.log("connected to DB");
testConnection();
};
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
whenever a message is sent thews.onmessagefunction is not getting invoked. I tried with breakpoints in my node service.
– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53426595%2fhow-to-trigger-function-from-javascript-websocket%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You should check out the Websockets docs the message handlers is a callback on the websocket onmessage calling on will just return undefined.
const ws = new WebSocket("ws://localhost:3000");
ws.onmessage = (event) => {
console.log("connected to DB");
testConnection();
};
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
whenever a message is sent thews.onmessagefunction is not getting invoked. I tried with breakpoints in my node service.
– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
add a comment |
You should check out the Websockets docs the message handlers is a callback on the websocket onmessage calling on will just return undefined.
const ws = new WebSocket("ws://localhost:3000");
ws.onmessage = (event) => {
console.log("connected to DB");
testConnection();
};
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
whenever a message is sent thews.onmessagefunction is not getting invoked. I tried with breakpoints in my node service.
– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
add a comment |
You should check out the Websockets docs the message handlers is a callback on the websocket onmessage calling on will just return undefined.
const ws = new WebSocket("ws://localhost:3000");
ws.onmessage = (event) => {
console.log("connected to DB");
testConnection();
};
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
You should check out the Websockets docs the message handlers is a callback on the websocket onmessage calling on will just return undefined.
const ws = new WebSocket("ws://localhost:3000");
ws.onmessage = (event) => {
console.log("connected to DB");
testConnection();
};
async function testConnection() {
await sequelize.authenticate().then(() => {
console.log("Connected to DB");
})
.catch((err) => {
console.log(err);
});
};
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
edited Nov 22 '18 at 10:37
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
answered Nov 22 '18 at 9:20
Jonathan NewtonJonathan Newton
711517
711517
whenever a message is sent thews.onmessagefunction is not getting invoked. I tried with breakpoints in my node service.
– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
add a comment |
whenever a message is sent thews.onmessagefunction is not getting invoked. I tried with breakpoints in my node service.
– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
whenever a message is sent the
ws.onmessage function is not getting invoked. I tried with breakpoints in my node service.– Tony Roczz
Nov 22 '18 at 9:46
whenever a message is sent the
ws.onmessage function is not getting invoked. I tried with breakpoints in my node service.– Tony Roczz
Nov 22 '18 at 9:46
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
@TonyRoczz could you add your node websocket code into the question?
– Jonathan Newton
Nov 22 '18 at 10:40
1
1
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
Its working now. it was some other error with my code.
– Tony Roczz
Nov 22 '18 at 11:58
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
@TonyRoczz amazing! Could you mark this as the correct answer?
– Jonathan Newton
Nov 22 '18 at 12:03
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53426595%2fhow-to-trigger-function-from-javascript-websocket%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
