Common invalid host-port pairs

Docs > Code Analysis > Static Analysis Rules > Common invalid host-port pairs

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Metadata

ID: go-best-practices/invalid-host-port-pair

Language: Go

Severity: Warning

Category: Best Practices

Description

The host:port pair is invalid. The HTTP server needs to use a valid pair of address and port.

Non-Compliant Code Examples

package main

import ("net")

func main(){
    // Good
    http.ListenAndServe("localhost:8080", nil)
    http.ListenAndServe(":8080", nil)
    http.ListenAndServe(":http", nil)
    http.ListenAndServe("localhost:http", nil)
    http.ListenAndServe("my_server:8080", nil)
    http.ListenAndServe("", nil) // Defaults to ":http"

    // Bad
    http.ListenAndServe("localhost:8080/", nil) 
    http.ListenAndServe("localhost", nil)       

    // Good
    http.ListenAndServeTLS("localhost:8443", "cert.pem", "key.pem", nil)
    http.ListenAndServeTLS(":8443", "cert.pem", "key.pem", nil)
    http.ListenAndServeTLS("localhost:https", "cert.pem", "key.pem", nil)
    http.ListenAndServeTLS("my_server:8443", "cert.pem", "key.pem", nil)
    http.ListenAndServeTLS("", "cert.pem", "key.pem", nil) // Defaults to ":https"

    // Bad
    http.ListenAndServeTLS("localhost:8443/", "cert.pem", "key.pem", nil)
    http.ListenAndServeTLS("localhost", "cert.pem", "key.pem", nil)
}