I'm trying to simulate the situation where a client is sending a large POST request to the server and the server (or a load balancer) terminates the client connection halfway through the request.
Is this possible to do with Fiddler? I'm open to other (Windows) tool suggestions as well.
Thanks!
Click Rules > Customize Rules. Scroll to the OnPeekAtRequestHeaders function. Add code like so:
static function OnPeekAtRequestHeaders(oSession: Session) {
if (oSession.uriContains("myupload.php") &&
oSession.oRequest.headers.Exists("Content-Length") &&
oSession.oRequest.headers["Content-Length"] != "0")
{
oSession.oRequest.pipeClient.EndWithRST();
}
}
Related
I am trying to create a communication interface between a python socket server and a Metatrader 5 Expert Advisor.
I've tried multiple approaches and tutorial's I found online for both sockets and websockets. All of these approaches yield the same problem.
Whenever I start a debug on live/historical data, I get a Socket creation error with code 4014. According to the error codes it is a "Function is not allowed for call" error.
Multiple sources recommended to allow web request from specified URL's. Ive done this as well for 127.0.0.1 and localhost. (Tools > options > Expert Advisors)
Why am I getting a function not allowed for call error, and how can this be fixed?
Expert code:
int socket=SocketCreate();
int OnInit()
{
if(SocketConnect(socket,"127.0.0.1",9090,1000))
{
Print("Connected to "," 127.0.0.1",":",9090);
}
else
{
Print(GetLastError());
}
return(INIT_SUCCEEDED);
}
void OnDeinit(const int reason)
{
SocketClose(socket);
}
void OnTick()
{
SocketClose(socket);
}
We had similar issue in the past and was resolved it by adding the hostname/IP to connect to to the list of allowed URLs in Tools->Options->Expert Advisor.
You can also use a MetaApi service to communicate with MetaTrader via developer-friendly SDKs and code your expert advisor in Javascript, Java or Python.
Hope this is useful to some degree.
I faced the same problem.
Works for me: to point exactly '127.0.0.1' (without upper commas) in address input field.
Also, check your firewall settings - it may block your ports.
The best regards.
I have a windows desktop application on .NET Framework that a user can interact with. There is a "connect" button that sets up Apache Geode client connection to Geode Server.
When Geode Server is down (Locator - there is only 1) the desktop application hangs indefinitely and needs to be forcefully closed.
This is how we connenect to the server and hangs on last line indefinitely:
PoolFactory poolFactory = _cache.GetPoolManager()
.CreateFactory()
.SetSubscriptionEnabled(true)
.AddLocator(_host, _port);
return poolFactory.Create(_serviceName);
I would like to add a time-out period for this method to return or throw exceptions or anything.
Alternatively, I've wrapped it on a different kind of timer outside of this to just return, but when trying to run the above code again (to try to connect the application again) the pool is still trying to connect.
I have tried to destroy it like this:
//destroy the pool
var poolManager = _cache.GetPoolManager();
if (poolManager != null)
{
var pool = poolManager.Find(_serviceName);
if (pool != null && pool.Destroyed == false)
pool.Destroy();
}
But then the pool.Destroy(); hangs indefinateley
How can I have a mechanism to attempt to connect to the Geode server, return if not connected within 10 seconds, then leave and are able to try to connect again using the same cache?
Note above was trying to re-use the same cache, probably setting cache to null and trying all over again would work, but I am looking for a more correct way to do it.
Depending on what version of .NET native client you are using. There is a property in 10.x connect-timeout that should work. Additionally, you can wrap your connection code under try{...}catch{} block and handle an exception for Apache.Geode.Client.TimeoutException and/or ": No locators available".
Example:
var _cache = new CacheFactory()
.Set("log-level", "config")
.Set("log-file", "C:\temp\test.log")
.Set("connect-timeout", "26000ms")
.Create();
_cache.GetPoolManager()
.CreateFactory()
.SetSubscriptionEnabled(true)
.AddLocator(hostname-or-ip", port-number)
.Create("TestPool");
Is there a way to get a Clients IP in Context of a write?
I want to get the IP of an Client that writes to my Milo-OPCUA-Server, so I can handle these writes differently based on the Clients IP (local Clients should be able to write directly on the Server, whilst other writes should get forwarded to another Server)
Okay, this is not part of any official API right now, so it almost certainly will break in the future, but:
With the OperationContext you get when implementing AttributeManager#write(WriteContext, List<WriteValue>):
context.getSession().ifPresent(session -> {
UaStackServer stackServer = context.getServer().getServer();
if (stackServer instanceof UaTcpStackServer) {
ServerSecureChannel secureChannel = ((UaTcpStackServer) stackServer)
.getSecureChannel(session.getSecureChannelId());
Channel channel = secureChannel.attr(UaTcpStackServer.BoundChannelKey).get();
SocketAddress remoteAddress = channel.remoteAddress();
}
});
I'll have to add some official API to do this, probably something hanging off the Session object.
I am writing some interface for users to collect data and send to a server. I went for GWT for various reasons.
Now, when I try to call my server:
String url = "http://127.0.0.1:3000/data/collection.xml";
RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode(url));
Request request = builder.sendRequest(data, new RequestCallback() {
public void onResponseReceived(Request request, Response response) {
if (200 == response.getStatusCode()) {
result.setText("SUCCESS!");
} else {
result.setText("ERROR with code: " + response.getStatusCode());
My server gets the request (a POST with some data) but I get ERROR with code: 0 (!) all the time. I guess this has to do with SOP. I read lots about this SOP but I am even more confused now. I tried to follow this tutorial but that's using a different approach (I managed to adapt it to issue GET calls only, but return objects are always null).
Can anyone point me into the right direction? thanks
You can not call any service from another server because of SOP. What you can do, you can use your original server as proxy to other servers.. I would recommend you to read this tutorial.
Is there a way to filter out certain processes in Fiddler? Its very noisy currently, and I don't want it to show just one process.
The built-in Show only traffic from option is useful if your process never exits and always has the same PID. In my case, my HTTP client was starting and exiting frequently, so I added this custom FiddlerScript.
Go to Rules > Customize Rules... to start editing CustomRules.js.
Add this inside the Handlers class
class Handlers
{
RulesString("&Process filter", true)
RulesStringValue(0, "&Chrome", "chrome")
RulesStringValue(1, "&Firefox", "firefox")
RulesStringValue(2, "&Internet Explorer", "iexplore")
RulesStringValue(3, "&Opera", "opera")
RulesStringValue(4, "&PhantomJS", "phantomjs")
RulesStringValue(5, "&Custom...", "%CUSTOM%")
public static var sProcessName: String = null;
// leave the rest of the Handlers class as-is
}
Add this inside the OnBeforeRequest function
static function OnBeforeRequest(oSession: Session) {
if (null != sProcessName) {
var processInfo = oSession["X-PROCESSINFO"];
if(!processInfo || !processInfo.StartsWith(sProcessName + ":")){
oSession["ui-hide"] = "true";
FiddlerObject.StatusText = " Process filter: " + sProcessName;
}
}
// leave the rest of the OnBeforeRequest function as-is
}
Fiddler will apply your changes as soon as you save the CustomRules.js file.
To use, go to Rules > Process Filter and choose a browser, or use Custom and type in your executable's basename (e.g. iexplore).
Filtering applies to requests that start after you choose a process. Previous requests and Fiddler Composer requests are not affected.
Basically a duplicate of Filter Fiddler traffic . Just go to the Filters tab in Fiddler and then the "Client Process" fieldset and then choose "Show only traffic from " and choose the appropriate process.