76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package main
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import (
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"bufio"
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"crypto/tls"
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"flag"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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)
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var tlsVersionToName = map[string]uint16{
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"tls10": tls.VersionTLS10,
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"tls11": tls.VersionTLS11,
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"tls12": tls.VersionTLS12,
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"tls13": tls.VersionTLS13,
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}
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// Usage client args host:port
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func main() {
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var version string
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var addr string
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var enableEMS bool
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var resume bool
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var config tls.Config
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var cache tls.ClientSessionCache
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cache = tls.NewLRUClientSessionCache(0)
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flag.StringVar(&version, "version", "tls12", "Version of TLS to use")
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flag.BoolVar(&enableEMS, "m", false, "Enable EMS")
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flag.BoolVar(&resume, "r", false, "Attempt Resumption")
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flag.Parse()
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config.MinVersion = tlsVersionToName[version]
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config.MaxVersion = tlsVersionToName[version]
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config.InsecureSkipVerify = true
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config.UseExtendedMasterSecret = !enableEMS
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config.ClientSessionCache = cache
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var iters int
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if resume {
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iters = 2
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} else {
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iters = 1
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}
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addr = flag.Arg(0)
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for ; iters > 0; iters-- {
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conn, err := tls.Dial("tcp", addr, &config)
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if err != nil {
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fmt.Println("Error %s", err)
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os.Exit(1)
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}
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var req http.Request
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var response *http.Response
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req.Method = "GET"
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req.URL, err = url.Parse("https://" + addr + "/")
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if err != nil {
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fmt.Println("Failed to parse url")
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os.Exit(1)
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}
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req.Write(conn)
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reader := bufio.NewReader(conn)
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response, err = http.ReadResponse(reader, nil)
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if err != nil {
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fmt.Println("HTTP problem")
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fmt.Println(err)
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os.Exit(1)
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}
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io.Copy(os.Stdout, response.Body)
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conn.Close()
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if resume && iters == 2 {
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fmt.Println("Attempting resumption")
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}
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}
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os.Exit(0)
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}
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