When i hit an api : "http://localhost:4040/api/v1/user/getAUser"
I got a Error how to solve this
server is running on port 4040
DB connection successful
node:internal/errors:496
ErrorCaptureStackTrace(err);
^
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
at new NodeError (node:internal/errors:405:5)
at ServerResponse.setHeader (node:_http_outgoing:648:11)
at ServerResponse.header (D:blogAppBackendnode_modulesexpresslibresponse.js:794:10)
at ServerResponse.send (D:blogAppBackendnode_modulesexpresslibresponse.js:174:12)
at ServerResponse.json (D:blogAppBackendnode_modulesexpresslibresponse.js:278:15)
at exports.getAUser (D:blogAppBackendcontrollersuserControllers.js:206:32)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
code: 'ERR_HTTP_HEADERS_SENT'
}
Node.js v18.18.2
[nodemon] app crashed - waiting for file changes before starting...
stuck my mind
and i do nothing
some parts of code
added some parts of code
exports.getAUser = async(req,res)=>{
try {
// get user id by paramsj or res ke body
const userId = req.user.id;
//get a user by id
const user = await User.findById(userId);
// return resposne
res.status(200).json({
success : true,
message : "User data Found ",
user
})
} catch (error) {
return res.status(500).json({
success : false,
message : error.message,
})
}
}
api :"http://localhost:4040/api/v1/user/getAUser"
// create token
const token = jwt.sign({email : user.email,id : user._id,name : user.name},"ramkumarsha256",{
expiresIn : "30d"
})
// remove password from user
user.password = undefined;
user.token = token;
const options = {
httpOnly : true
}
2
Answers
This error comes when the server is trying to have more than one requests. Add return statements for all the middlewares that you are using.
Error is straight forward. You are setting response headers somewhere in your code after the data is sent to the response object.