This topic provides the Python, Java, Go, PHP, and C# demos to help you sign your URLs based on your business needs.
For more information about URL signing rules, see Configure URL signing. The following demos use type A signing.
Note
- The
key
parameter in the demos corresponds to the Primary Key or Secondary Key parameter for URL signing in the ApsaraVideo Live console. You can configure or view the key in the Signed URL Settings section on the URL Authentication tab in the ApsaraVideo Live console. You can perform the following steps to go to the URL Authentication tab: In the left-side navigation pane, click Domains. Find the domain that you want to configure and click Domain Settings in the Actions column. Choose . Then, click the URL Authentication tab. - To generate ingest URLs, you must set the
key
parameter to the primary key or secondary key of an ingest domain. - To generate streaming URLs, you must set the
key
parameter to the primary key or secondary key of a streaming domain.
Python demo
import re
import time
import hashlib
import datetime
def md5sum(src):
m = hashlib.md5()
m.update(src)
return m.hexdigest()
def a_auth(uri, key, exp):
p = re.compile("^(rtmp://)?([^/?]+)(/[^?]*)?(\\?.*)?$")
if not p:
return None
m = p.match(uri)
scheme, host, path, args = m.groups()
if not scheme: scheme = "rtmp://"
if not path: path = "/"
if not args: args = ""
rand = "0" # "0" by default, other value is ok
uid = "0" # "0" by default, other value is ok
sstring = "%s-%s-%s-%s-%s" %(path, exp, rand, uid, key)
hashvalue = md5sum(sstring.encode('utf-8'))
auth_key = "%s-%s-%s-%s" %(exp, rand, uid, hashvalue)
if args:
return "%s%s%s%s&auth_key=%s" %(scheme, host, path, args, auth_key)
else:
return "%s%s%s%s?auth_key=%s" %(scheme, host, path, args, auth_key)
def main():
uri = "rtmp://example.aliyundoc.com/test/test?vhost=demo.aliyundoc.com" # original uri
key = "<input private key>" # private key of authorization
exp = int(time.time()) + 1 * 3600 # expiration time: 1 hour after current itme
authuri = a_auth(uri, key, exp) # auth type:
print("URL : %s\nAUTH: %s" %(uri, authuri))
if __name__ == "__main__":
main()
Java demo
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class AuthDemo {
private static String md5Sum(String src) {
MessageDigest md5 = null;
try {
md5 = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
md5.update(StandardCharsets.UTF_8.encode(src));
return String.format("%032x", new BigInteger(1, md5.digest()));
}
private static String aAuth(String uri, String key, long exp) {
String pattern = "^(rtmp://)?([^/?]+)(/[^?]*)?(\\\\?.*)?$";
Pattern r = Pattern.compile(pattern);
Matcher m = r.matcher(uri);
String scheme = "", host = "", path = "", args = "";
if (m.find()) {
scheme = m.group(1) == null ? "rtmp://" : m.group(1);
host = m.group(2) == null ? "" : m.group(2);
path = m.group(3) == null ? "/" : m.group(3);
args = m.group(4) == null ? "" : m.group(4);
} else {
System.out.println("NO MATCH");
}
String rand = "0"; // "0" by default, other value is ok
String uid = "0"; // "0" by default, other value is ok
String sString = String.format("%s-%s-%s-%s-%s", path, exp, rand, uid, key);
String hashValue = md5Sum(sString);
String authKey = String.format("%s-%s-%s-%s", exp, rand, uid, hashValue);
if (args.isEmpty()) {
return String.format("%s%s%s%s?auth_key=%s", scheme, host, path, args, authKey);
} else {
return String.format("%s%s%s%s&auth_key=%s", scheme, host, path, args, authKey);
}
}
public static void main(String[] args) {
String uri = "rtmp://example.aliyundoc.com/live/test"; // original uri
String key = "<input private key>"; // private key of authorization
long exp = System.currentTimeMillis() / 1000 + 1 * 3600; // expiration time: 1 hour after current time
String authUri = aAuth(uri, key, exp); // auth type:
System.out.printf("URL : %s\nAuth: %s", uri, authUri);
}
}
Go demo
package main
import (
"crypto/md5"
"encoding/hex"
"fmt"
"regexp"
"time"
)
func md5sum(src string) string {
h := md5.New()
h.Write([]byte(src))
return hex.EncodeToString(h.Sum(nil))
}
func a_auth(uri, key string, exp int64) string {
p, err := regexp.Compile("^(rtmp://)?([^/?]+)(/[^?]*)?(\\?.*)?$")
if err != nil {
fmt.Println(err)
return ""
}
m := p.FindStringSubmatch(uri)
var scheme, host, path, args string
if len(m) == 5 {
scheme, host, path, args = m[1], m[2], m[3], m[4]
} else {
scheme, host, path, args = "rtmp://", "", "/", ""
}
rand := "0" // "0" by default, other value is ok
uid := "0" // "0" by default, other value is ok
sstring := fmt.Sprintf("%s-%d-%s-%s-%s", path, exp, rand, uid, key)
hashvalue := md5sum(sstring)
auth_key := fmt.Sprintf("%d-%s-%s-%s", exp, rand, uid, hashvalue)
if len(args) != 0 {
return fmt.Sprintf("%s%s%s%s&auth_key=%s", scheme, host, path, args, auth_key)
} else {
return fmt.Sprintf("%s%s%s%s?auth_key=%s", scheme, host, path, args, auth_key)
}
}
func main() {
uri := "rtmp://example.aliyundoc.com/live/test" // original uri
key := "<input private key>" // private key of authorization
exp := time.Now().Unix() + 3600 // expiration time: 1 hour after current itme
authuri := a_auth(uri, key, exp) // auth type:
fmt.Printf("URL : %s\nAUTH: %s", uri, authuri)
}
PHP demo
<?php
function a_auth($uri, $key, $exp) {
preg_match("/^(rtmp:\/\/)?([^\/?]+)?(\/[^?]*)?(\\?.*)?$/", $uri, $matches);
$scheme = $matches[1];
$host = $matches[2];
$path = $matches[3];
$args = $matches[4];
if (empty($args)) {
$args ="";
}
if (empty($scheme)) {
$scheme ="rtmp://";
}
if (empty($path)) {
$path ="/";
}
$rand = "0";
// "0" by default, other value is ok
$uid = "0";
// "0" by default, other value is ok
$sstring = sprintf("%s-%u-%s-%s-%s", $path, $exp, $rand, $uid, $key);
$hashvalue = md5($sstring);
$auth_key = sprintf("%u-%s-%s-%s", $exp, $rand, $uid, $hashvalue);
if ($args) {
return sprintf("%s%s%s%s&auth_key=%s", $scheme, $host, $path, $args, $auth_key);
} else {
return sprintf("%s%s%s%s?auth_key=%s", $scheme, $host, $path, $args, $auth_key);
}
}
$uri = "rtmp://example.aliyundoc.com/live/test";
$key = "<input private key>";
$exp = time() + 3600;
$authuri = a_auth($uri, $key, $exp);
echo "URL :" . $uri;
echo PHP_EOL;
echo "AUTH:" . $authuri;
?>
C# demo
using System;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
using System.Text;
public class Test
{
public static void Main()
{
string uri= "rtmp://example.aliyundoc.com/live/test"; // original uri
string key= "<input private key>"; // private key of authorization
DateTime dateStart = new DateTime(1970, 1, 1, 8, 0, 0);
string exp = Convert.ToInt64((DateTime.Now - dateStart).TotalSeconds+3600).ToString(); // expiration time: 1 hour after current time
string authUri = aAuth(uri, key, exp);
Console.WriteLine (String.Format("URL :{0}",uri));
Console.WriteLine (String.Format("AUTH :{0}",authUri));
}
public static string aAuth(string uri, string key, string exp)
{
Regex regex = new Regex("^(rtmp://)?([^/?]+)(/[^?]*)?(\\\\?.*)?$");
Match m = regex.Match(uri);
string scheme = "rtmp://", host = "", path = "/", args = "";
if (m.Success)
{
scheme=m.Groups[1].Value;
host=m.Groups[2].Value;
path=m.Groups[3].Value;
args=m.Groups[4].Value;
}else{
Console.WriteLine ("NO MATCH");
}
string rand = "0"; // "0" by default, other value is ok
string uid = "0"; // "0" by default, other value is ok
string u = String.Format("{0}-{1}-{2}-{3}-{4}", path, exp, rand, uid, key);
string hashValue = Md5(u);
string authKey = String.Format("{0}-{1}-{2}-{3}", exp, rand, uid, hashValue);
if (args=="")
{
return String.Format("{0}{1}{2}{3}?auth_key={4}", scheme, host, path, args, authKey);
} else
{
return String.Format("{0}{1}{2}{3}&auth_key={4}", scheme, host, path, args, authKey);
}
}
public static string Md5(string value)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] bytes = Encoding.ASCII.GetBytes(value);
byte[] encoded = md5.ComputeHash(bytes);
StringBuilder sb = new StringBuilder();
for(int i=0; i<encoded.Length; ++i)
{
sb.Append(encoded[i].ToString("x2"));
}
return sb.ToString();
}
}