Home Backend Development Golang golang only uses https

golang only uses https

May 19, 2023 am 10:44 AM

With the rapid development of the Internet, the requirements for network security are becoming higher and higher. In many applications, security is crucial to data transmission, which requires us to take some measures to ensure the security and stability of data transmission. Among them, HTTPS is widely used in various network applications, and the security and reliability of data transmission can be ensured through the HTTPS protocol.

To use the HTTPS protocol in golang, you need to complete the following steps.

Step 1: Obtain the certificate

Under normal circumstances, the HTTPS protocol needs to obtain a certificate to ensure the security of the transmission. In golang, it is very convenient to use GoCert to generate certificates. We only need to use the following command:

go run $(go env GOROOT)/src/crypto/tls/generate_cert.go --host=localhost
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The above command will generate two files, server.pem and server.key. These two files are what we need. Certificate.

Step 2: Configure HTTPS server

In golang, you can easily build an http server using the net/http package. If we want to support the HTTPS protocol, we only need to use the ServeTLS method in the net/http package. The example is as follows:

package main

import (
    "crypto/tls"
    "net/http"
)

func main() {
    mux := http.NewServeMux()
    mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
        w.Header().Set("Content-Type", "text/plain")
        w.Write([]byte("This is an example HTTPS server.
"))
    })

    // load keys and certificate from server.pem and server.key
    server := &http.Server{Addr: ":8080", Handler: mux, TLSConfig: &tls.Config{
        MinVersion: tls.VersionTLS12,
    }}
    server.ListenAndServeTLS("server.pem", "server.key")
}
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The above code will start an HTTPS server to listen to the 8080 port, and the monitored request will return a Simple string. It should be noted that we specified the protocol version as TLS1.2 in TLSConfig.

Step 3: Send a request using HTTPS

In golang, sending a request using HTTPS is also very simple. We only need to use the Get or Post method in the net/http package and specify the URL to be requested. The example is as follows:

client := &http.Client{}
resp, err := client.Get("https://example.com")
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The above code will create an HTTP client and send an HTTPS to the target address GET request and return the server response information. It should be noted that before sending an HTTPS request, we need to create a tls.Config configuration for the client and pass the configuration to the Transport attribute. The example is as follows:

httpClient := &http.Client{
    Transport: &http.Transport{
        TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
    },
}
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The InsecureSkipVerify attribute will be skipped if it is true. Verification of the target server certificate.

Summary

In this article, we introduced how to use HTTPS in golang. Through the above steps, we can easily set up an HTTPS server and send HTTPS requests. It is important to note that the use of HTTPS is designed to protect the security of our data transmission, so use caution when using it.

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