I have set a metadata groupip="10.0.0.2 10.0.0.3 10.0.0.4" in the project metadata. I am trying to query it using the following command:
curl 'http://metadata/computeMetadata/v1/projectid/groupip/' -H "Metadata-Flavor: Google"
As answer instead of the IP's I am getting the following:
<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
<meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width">
<title>Error 404 (Not Found)!!1</title>
<style>
*{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}bod
y{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/im
ages/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;t
ext-decoration:none}a img{border:0}#media screen and (max-width:772px){body{background:none;margin-top:0;max-width:
none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp
.png) no-repeat;margin-left:-5px}#media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.c
om/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//w
ww.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}#media only screen and (-webkit-min-d
evice-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.
png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}
</style>
<a href=//www.google.com/><span id=logo aria-label=Google></span></a>
<p><b>404.</b> <ins>That’s an error.</ins>
<p>The requested URL <code>/computeMetadata/v1/projectid/groupip/</code> was not found on this server. <ins>Th
at’s all we know.</ins>
In the same way that you get an instance's metadata via instance/attributes/xyz, so you can get the project's metadata via project/attributes/xyz.
curl http://metadata/computeMetadata/v1/project/attributes/groupip -H "Metadata-Flavor: Google"
To make sure you actually added the project-level metadata correctly, list all project attributes:
And more generally, keep shortening the URL to list ancestors:
Related
Foreword: I am stuck due to poor coding skills and a lack of understanding of the details of the URL authentication. I am not a coder but an amateur who usually get by with a little help from Google.
Challenge 1:
I am trying to set Icecast up in such a way that the audio stream can only be heard when you log in to my website. The method is called URL authentication by Icecast. Here is the link to the official documentation:
https://icecast.org/docs/icecast-2.4.0/auth.html
My problem: I understand that I have to integrate certain queries in the icecast.xml that are then answered by the player on my website. Unfortunately, I don't know where to integrate these codes. In a file in the webroot? In the header of the player page?
Challenge 2:
Another thing is that the player is working, but when I hit the pause button and restart the player 10 minutes later the song picks up there I paused the player even though the radio stream is already 2 titles ahead. So the cover art does not match the audio.
I guess that also has something to do with certain tweaks in the icecast.xml. Again ... I don't know how to add these tweaks and how to address them on my website (same issue as with the authentication).
Due to royalty issues, my website is behind a firewall for the time being.
Can anyone shed some light on my questions?
I included the code of my icecast.xml and of the iFrame that contains the player.
Best wishes,
Paul
This is the iFrame that contains the Drupal website and the HTML5 player:
<html>
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="-1" />
<meta name=viewport content="width=device-width, initial-scale=1">
<style type="text/css">
html, body {
background: #333333;
height: 100%;
margin: 0px;
padding: 0px;
border: 0px;
}
iframe {
width: 100%;
height: 92%;
margin: 0px;
padding: 0px;
border: none;
display: block;
}
</style>
<body>
<?php
print('<iframe id="drupal_site" src="http://test.zoootradio.com" height="92%" width="100%" frameborder="0"></iframe>');
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0"); // Proxies.
print('<audio id="player" controls>');
print('<source src="http://192.168.2.50:8000/zr.mp3" type="audio/mpeg">');
print('</audio>');
?>
</body>
</html>
This is my icecast.xml file:
<icecast>
<location>Earth</location>
<admin>icemaster#localhost</admin>
<limits>
<clients>15</clients>
<sources>1</sources>
<queue-size>524288</queue-size>
<client-timeout>30</client-timeout>
<header-timeout>15</header-timeout>
<source-timeout>10</source-timeout>
<burst-on-connect>1</burst-on-connect>
<burst-size>65535</burst-size>
</limits>
<authentication>
<!-- Sources log in with username 'source' -->
<source-password>XXXXXXX</source-password>
<!-- Relays log in with username 'relay' -->
<relay-password>XXXXXXX</relay-password>
<!-- Admin logs in with the username given below -->
<admin-user>XXXXXXX</admin-user>
<admin-password>XXXXXXX</admin-password>
</authentication>
<hostname>192.168.2.50</hostname>
<!-- You may have multiple <listener> elements -->
<listen-socket>
<port>8000</port>
<!-- <bind-address>127.0.0.1</bind-address> -->
<!-- <shoutcast-mount>/stream</shoutcast-mount> -->
</listen-socket>
<http-headers>
<header name="Access-Control-Allow-Origin" value="*" />
</http-headers>
<mount type="normal">
<mount-name>/zr.mp3</mount-name>
<authentication type="url">
<option name="stream_auth" value="http://test.zoootradio.com/player"/>
</authentication>
</mount>
<fileserve>1</fileserve>
<paths>
<!-- basedir is only used if chroot is enabled -->
<basedir>/usr/share/icecast2</basedir>
<!-- Note that if <chroot> is turned on below, these paths must both
be relative to the new root, not the original root -->
<logdir>/var/log/icecast2</logdir>
<webroot>/usr/share/icecast2/web</webroot>
<adminroot>/usr/share/icecast2/admin</adminroot>
<!-- <pidfile>/usr/share/icecast2/icecast.pid</pidfile> -->
<alias source="/" destination="/status.xsl"/>
<!-- The certificate file needs to contain both public and private part.
Both should be PEM encoded.
<ssl-certificate>/usr/share/icecast2/icecast.pem</ssl-certificate>
-->
</paths>
<logging>
<accesslog>access.log</accesslog>
<errorlog>error.log</errorlog>
<!-- <playlistlog>playlist.log</playlistlog> -->
<loglevel>3</loglevel> <!-- 4 Debug, 3 Info, 2 Warn, 1 Error -->
<logsize>10000</logsize> <!-- Max size of a logfile -->
<!-- If logarchive is enabled (1), then when logsize is reached
the logfile will be moved to [error|access|playlist].log.DATESTAMP,
otherwise it will be moved to [error|access|playlist].log.old.
Default is non-archive mode (i.e. overwrite)
-->
<!-- <logarchive>1</logarchive> -->
</logging>
<security>
<chroot>0</chroot>
<!--
<changeowner>
<user>nobody</user>
<group>nogroup</group>
</changeowner>
-->
</security>
1 - "URL auth"
Your icecast.xml does not contain any definition, so you don't have URL-auth configured.
What are you really trying to achieve?
2 - pause
Streams can't be paused, don't try to do it, it will break things. If you stop a stream, make sure that you do it in a way that makes the browser actually drop the connection.
Also you should always use a 'cache buster' or other way to ensure that the browser does not try to use cached stream content. (See my other answers on related topics here)
I created a cxf route for my application like this:
from("cxfrs:{{url}}?resourceClasses=MyImpl&bindingStyle=SimpleConsumer")
.to("${header.operationName}").end();
from("direct:{{getUser}}")
.bean("userImpl", "getUserByName")
.marshal().json(JsonLibrary.Jackson)
.to("log:foo");
from("direct:{{login}}")
.bean("userImpl", "loginUser")
.marshal().json(JsonLibrary.Jackson)
.to("log:foo");
If I try get my operationName in a processor, I can get it, but if I call this route, I have this message:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Error 500 No consumers available on endpoint: Endpoint[direct://$%7Bheader.operationName%7D]. Exchange[ID-NBSPO049-64311-1498773394077-0-2] while invoking public java.lang.String com.itau.ea4.implementacao.UserImpl.loginUser(java.lang.String,java.lang.String) with params [teste, 1234].</title>
</head>
<body>
<h2>HTTP ERROR 500</h2>
<p>Problem accessing /user/login. Reason:
<pre> No consumers available on endpoint: Endpoint[direct://$%7Bheader.operationName%7D]. Exchange[ID-NBSPO049-64311-1498773394077-0-2] while invoking public java.lang.String com.itau.ea4.implementacao.UserImpl.loginUser(java.lang.String,java.lang.String) with params [teste, 1234].</pre>
</p>
<hr>
<i>
<small>Powered by Jetty://</small>
</i>
<hr/>
</body>
What's wrong with my route?
And why my header cannot is recognized?
The problem is in:
.to("${header.operationName}")
"to(...)" doesn't support dynamic data so in your case it actually tries to send to endpoint "direct:{header.operationName}".
To use dynamic value from header you can use toD (from Camel 2.19) or recipientsList with one recipient (Camel before 2.19)
I'm trying to make a get request from a Arduino to Google App Engine:
client.println("GET /getData HTTP/1.0\r\n");
client.println("HOST: xxxxxxxxxx.appspot.com\r\n");
client.println("\r\n");
And I get the following error message:
HTTP/1.0 404 Not Found
Content-Type: text/html; charset=UTF-8
Content-Length: 1576
Date: Tue, 24 May 2016 12:07:34 GMT
<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
<meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width">
<title>Error 404 (Not Found)!!1</title>
<style>
*{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}#media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}#media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}#media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}
</style>
<a href=//www.google.com/><span id=logo aria-label=Google></span></a>
<p><b>404.</b> <ins>That’s an error.</ins>
<p>The requested URL <code>/getData </code> was not found on this server. <ins>That’s all we know.</ins>
I cant seem to get the formatting of the request right. Does anyone have a idea how to get it working? When I test it against WAMP server everything works fine. Thanks
This code should help you:
char server[]="your_server_name";
EthernetClient client;
IPAddress ip(192, 168, 1, 40); // Arduino IP Add
IPAddress myDns(8,8,8,8); // DNS
IPAddress myGateway(192,168,1,1); // your gateway
void setup() {
Serial.begin(9600);
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac,ip,myDns,myGateway);
}
}
in the loop():
... loop funcion
if (client.connect(server,80)) // Server port
{
client.println("GET /getData HTTP/1.0\r\n");
client.println("HOST: host_name\r\n");
client.println("\r\n");
}
I want to use the Wpf webBrowser control to render math equations.
I've downloaded MathJax, and included it in my Visual studio project.
I've tryed to load one of the MathJax example. This is the html code i'm using:
<!DOCTYPE html>
<html>
<head>
<title>MathJax MathML Test Page</title>
<!-- Copyright (c) 2010-2012 Design Science, Inc. -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<script type="text/javascript" src="MathJax-Reduced/unpacked/MathJax.js?config=TeX-AMS-MML_HTMLorMML-full"></script>
</head>
<body>
<p>
When
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mi>a</mi><mo>≠</mo><mn>0</mn>
</math>,
there are two solutions to
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mi>a</mi><msup><mi>x</mi><mn>2</mn></msup>
<mo>+</mo> <mi>b</mi><mi>x</mi>
<mo>+</mo> <mi>c</mi> <mo>=</mo> <mn>0</mn>
</math>
and they are
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mi>x</mi> <mo>=</mo>
<mrow>
<mfrac>
<mrow>
<mo>−</mo>
<mi>b</mi>
<mo>±</mo>
<msqrt>
<msup><mi>b</mi><mn>2</mn></msup>
<mo>−</mo>
<mn>4</mn><mi>a</mi><mi>c</mi>
</msqrt>
</mrow>
<mrow> <mn>2</mn><mi>a</mi> </mrow>
</mfrac>
</mrow>
</math>
</p>
</body>
</html>
Everything is working fine with the following code:
string curDir = Directory.GetCurrentDirectory();
this.webBrowser1.Navigate(new Uri(String.Format("file:///{0}/test-1.html", curDir)));
But if i try this code:
string s = File.ReadAllText(Directory.GetCurrentDirectory() + "\\test-1.html");
this.webBrowser1.NavigateToString(s);
i get a Script Error:
An error has occurred in the script on this page.
Line: 1
Char: 1
Error: Syntax Error
Code: 0
URL: about:MathJax-Reduced/unpacked/MathJax.js?config=TeX-AMS-MML_HTMLorMML-full
What's wrong? It would be really helpful to use something similar to the last code, so i can avoid to save a file just to load it...
Note that the URL in the error is about:MathJax-Reduced/unpacked..., which is an about URL not the file:// URL that you had in the first case. I suspect that is the cause of the problem. That suggests that the NavigateToString function is using about:blank or a similar URL as the base URL for the page, so MathJax is getting the wrong path to itself. Note that you lose the actual page location when reading it from the file and loading it as a string. That means you may have to load MathJax from an absolute URL rather than a relative one (i.e., include the file:// and path to the MathJax-Reduced directory).
I’m trying to get special characters like the German Umlaut (ä, ö, ü) working with the Google App Engine, but sadly it dosen't work. The Eclipse text file encoding is set to UTF-8, I use <meta http-equiv="content-type" content="text/html; charset=UTF-8"> in my index.html and the web.xml is also using encoding="utf-8".
If I compile my project locally, the characters are shown correctly. If I deploy it to the google appspot the characters are shown like this: ��. I checked also the Browser encoding, this is set to UTF-8, what did I miss?
Edit
Here is a example which works locally but not online:
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>ä ö ü</title>
</head>
<body>
<form name="profile" action="">
<select name="p" size="1">
<option value="1">ä</option>
<option value="2">ö</option>
</select>
</form>
</body>
Edit2
I could isolate the problem. At the start I use the google channel api to communicate with the clients. Here I write the token to the users. This is the problem. Here is the code:
I guess I have to convert to UTF-8, but where?
FileReader reader = new FileReader("index.html");
CharBuffer buffer = CharBuffer.allocate(16384);
reader.read(buffer);
reader.close();
String index = new String(buffer.array());
index = index.replaceAll("\\{\\{ token \\}\\}", token);
index = index.replaceAll("\\{\\{ user \\}\\}", account);
resp.getWriter().write(index);
Why the characters are not shown correctly online?
FileReader always uses the platform default encoding. Use
InputStreamReader(new FileInputStream("index.html"), "UTF-8")