Looking at highly price Camera SDK to handle ONVIF Standard, I decided to build some code to control PTZ camera movement using C#.
It it a nice tutorial video by Onvif Channel. That video describes basic step to make a C# project on visual studio. Unfortunately, I can’t get it work for my camera. I’m having YooSee camera GW-1113 which is already support PTZ Control.
There is another tutorial in CodeProject to use PTZ Control. My code is always get a closed connection message from the camera. Both using password or nor, it alway failed. Next, I got nice tool to cek my Onvif Camera. It can detect camera’s IP, port, display video stream and controlling camera using PTZ. You can get it here https://sourceforge.net/projects/onvifdm/ Afterward, I got IP, Port, and service.
With correct IP, Password, port and service address, it still error on getProfiles() command. I inisiate to find tool to debug Onvif request. I grab this tool in this forum https://support.yooseecamera.com/threads/233/ Nice step by step tutorial with pictures. I made my dummy service and dump post header request and then save it into textfile. Here is PHP code i got from // https://gist.github.com/magnetikonline/650e30e485c0f91f2f40 to dump request. I save it on http://localhost:5000/onvif/device_service/index.php
<?php
class DumpHTTPRequestToFile {
public function execute($targetFile) {
$data = sprintf(
"%s %s %s\n\nHTTP headers:\n",
$_SERVER['REQUEST_METHOD'],
$_SERVER['REQUEST_URI'],
$_SERVER['SERVER_PROTOCOL']
);
foreach ($this->getHeaderList() as $name => $value) {
$data .= $name . ': ' . $value . "\n";
}
$data .= "\nRequest body:\n";
file_put_contents(
$targetFile,
$data . file_get_contents('php://input') . "\n"
);
echo("Done!\n\n");
}
private function getHeaderList() {
$headerList = [];
foreach ($_SERVER as $name => $value) {
if (preg_match('/^HTTP_/',$name)) {
// convert HTTP_HEADER_NAME to Header-Name
$name = strtr(substr($name,5),'_',' ');
$name = ucwords(strtolower($name));
$name = strtr($name,' ','-');
// add to list
$headerList[$name] = $value;
}
}
return $headerList;
}
}
(new DumpHTTPRequestToFile)->execute('./dumprequest.txt');
exit();
And here are resutl I got from C# and Device Test Tool
POST /onvif/device_service/index.php HTTP/1.1
HTTP headers:
Host: localhost
Expect: 100-continue
Accept-Encoding: gzip, deflate
Connection: Keep-Alive
Request body:
<?xml version="1.0" encoding="utf-8"?><s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope"><s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><GetCapabilities xmlns="http://www.onvif.org/ver10/device/wsdl" /></s:Body></s:Envelope>
POST /onvif/device_service/index.php HTTP/1.1
HTTP headers:
Host: localhost
Accept: */*
Request body:
<?xml version="1.0" encoding="utf-8"?><s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope"><s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><GetCapabilities xmlns="http://www.onvif.org/ver10/device/wsdl" /></s:Body></s:Envelope>
Above was C# request, while next into it was Tool request You can see that the difference is only at HTTP headers section. Thus, I have to remove Expect:100-continue , gzip compression and Keep-Alive Connection (oprional). As well as add an Accept type.
try
{
var messageElement = new TextMessageEncodingBindingElement()
{
MessageVersion = MessageVersion.CreateVersion(
EnvelopeVersion.Soap12, AddressingVersion.None)
};
HttpTransportBindingElement httpBinding = new HttpTransportBindingElement()
{
AuthenticationScheme = AuthenticationSchemes.Digest
};
//remove compression
httpBinding.DecompressionEnabled = false;
// remove keep alive
httpBinding.KeepAliveEnabled = false;
CustomBinding bind = new CustomBinding(messageElement, httpBinding);
// Remove Expect
ServicePoint servicePoint =
ServicePointManager.FindServicePoint(service_uri);
servicePoint.Expect100Continue = false;
if (searchServiceUri)
{
// now execute some service operation
Device.DeviceClient device = new Device.DeviceClient(bind,
new EndpointAddress(service_uri));
device.ClientCredentials.HttpDigest.AllowedImpersonationLevel =
System.Security.Principal.TokenImpersonationLevel.Impersonation;
device.ClientCredentials.HttpDigest.ClientCredential.UserName = userName;
device.ClientCredentials.HttpDigest.ClientCredential.Password = password;
Device.Capabilities cap = device.GetCapabilities(null);
}
Later I got nice php script to controlling PTZ at https://github.com/sergejey/majordomo-onvif/blob/master/modules/onvif/class.ponvif.php