CODEWITHSUNDEEP
go
Valeriy
Valeriy

Reputation: 39

How to set a timeout for establishing a connection using net.Dialer?

For example if the server does not respond for more than 3 seconds, I neet to get an error or something specific. I search everything but only see the lifetime of the connection (net.Dialer.Timeout / net.Dialer.Deadline) but neet to limit limit exactly the establishing time.

Now my code like

dialer := net.Dialer{LocalAddr: net.TCPAddr{IP:"192.168.1.68", Port:35030}}
conn, err := tls.DialWithDialer(dialer, "tcp", "123.45.67.89", &tls.Config{...})

Thanks!

Upvotes: 1

Views: 974

Answers (1)

meshkati
meshkati

Reputation: 2393

There are many ways to do this, first, you can simply set the Timeout field of the net.Dialer, it does what you want:

// Timeout is the maximum amount of time a dial will wait for a connect to complete. If Deadline is also set, it may fail earlier.

timeout := time.Millisecond*3000

dialer := net.Dialer{Timeout: timeout, LocalAddr: net.TCPAddr{IP:"192.168.1.68", Port:35030}}
conn, err := tls.DialWithDialer(&dialer, "tcp", "123.45.67.89", &tls.Config{...})

There are some others solutions, like using net.DialTimeout, Dialer.DialContext and setting the timeout for the context you are passing:

timeout := time.Millisecond*3000

ctx, _ := context.WithTimeout(context.Background(), timeout)
conn , err := dialer.DialContext(ctx, "tcp", "123.45.67.89:8000")

Upvotes: 2

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