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HadiAbbasi

@HadiAbbasi

Hi there...
I don't know Am I right or not!
But I can't define a controller (handler) for empty path!

ADD_METHOD_TO(PageCtrl::RootRout,"",{Get , Post , Put , Patch , Delete , Head});
ADD_METHOD_TO(PageCtrl::RootRout,"/",{Get , Post , Put , Patch , Delete , Head});
METHOD_ADD(PageCtrl::RootRout,"",{Get , Post , Put , Patch , Delete , Head});
METHOD_ADD(PageCtrl::RootRout,"/",{Get , Post , Put , Patch , Delete , Head});

and there is no any drogon action on root request like:
http://mysite.com/

Clément Gamé 🧠

@WintermeW_twitter

Hi, i have a little question regarding Filters and the request object ref passed as parameter: I implemented an authentication filter that is properly working except one thing: Whenever i try to inject some user claims in the request (userId, profile_type etc..) with the help of req->setParameter(param_name,value) for later use in my controllers, the other query params seem added by the user in the URL seem to disappear. Am i doing something wrong ? What is the correct way for a filter to inject data in the request for later reuse by the controllers ?

Clément Gamé 🧠

@WintermeW_twitter

(note that i'd rather keep the auth mechanism sessionless)

An Tao

@an-tao

@WintermeW_twitter you could use the attributes of a request object to do that.

Clément Gamé 🧠

@WintermeW_twitter

@an-tao ok great, thank you

HadiAbbasi

@HadiAbbasi

Hi @an-tao
Is it possible to remove or change content-length or content-type of response as we need to test the caching of our cnd (made by nginx)?
In other words, I need to check the caching of my CDN for the while that there is no any cache-length on response headers and the origin server is drogon as there is no any limitation on (add/edit/remove headers on) it!
removeHeader method was not able to remove content-length!
I know that removing some headers like Content-Length can be dangerous but is there any solution for my problem?
All The Best,
Hadi

Maurice Barnett

@r3cebarnett

Apologies if this has already been answered somewhere. If I wanted to do a soft restart (without killing the parent process) of an application using Drogon, how might I cleanly resume Drogon?

It looks like drogon::app() returns a singleton and I can't find a way to reset it. I also tried to create my own instance of an HttpAppFramework object using newbut it seg faults upon deletion.

An Tao

@an-tao

Hi @an-tao
Is it possible to remove or change content-length or content-type of response as we need to test the caching of our cnd (made by nginx)?
In other words, I need to check the caching of my CDN for the while that there is no any cache-length on response headers and the origin server is drogon as there is no any limitation on (add/edit/remove headers on) it!
removeHeader method was not able to remove content-length!
I know that removing some headers like Content-Length can be dangerous but is there any solution for my problem?
All The Best,
Hadi

currently you can't do that, you need to change drogon code to achieve that.

3 replies

Apologies if this has already been answered somewhere. If I wanted to do a soft restart (without killing the parent process) of an application using Drogon, how might I cleanly resume Drogon?

There is no API of drogon to do that, you have to change drogon code to achieve that. please refer to the run() method of drogon::app().

An Tao

@an-tao

@HadiAbbasi You don't need to define a route for an empty path as it is equivalent to "/"

3 replies

1111mp

@1111mp

When I customize the filter, the lambda function passes the fccb execution causing the program to crash

Assertion failed: (idx < storage_.size()), function getThreadData, file IOThreadStorage.h, line 100.

can someone help me

please

thank you very much

1111mp

@1111mp

Probably know the reason, here you need to use the synchronous execCommandSync method.

An Tao

@an-tao

you should use the fast redis client to ensure that the storage is accessed in IO threads (not in the thread used by redis client)

please refer to the https://github.com/drogonframework/drogon/wiki/ENG-FAQ-1-Understanding-drogon-threading-model

jamal rashidi

@jamalrashidi1_twitter

hello
I have a problem with Trantor on Windows compiled with MSVC 2017 x64. I got the below error when running a simple TCP server using Trantor :

ERROR SO_REUSEPORT is not supported.

An Tao

@an-tao

    TcpServer(EventLoop *loop,
              const InetAddress &address,
              const std::string &name,
              bool reUseAddr = true,
              bool reUsePort = true);

you can set the last parameter to false

5 replies

Okami チム

@okami.mks:matrix.org

[m]

installing vcpkg was a struggle, XD

demenkovms

@demenkovms

Hello. I create controller by command: drogon_ctl create controller PingController:

PingController.h:

 #pragma once
 #include <drogon/HttpSimpleController.h>
 using namespace drogon; 
 class PingController : public drogon::HttpSimpleController<PingController>
 {
  public:
    virtual void asyncHandleHttpRequest(const HttpRequestPtr& req, std::function<void (const HttpResponsePtr &)> &&callback) override;
    PATH_LIST_BEGIN
     PATH_ADD("/PING", Get);
    PATH_LIST_END
 };

PingController.c:

#include "PingController.h"

void PingController::asyncHandleHttpRequest(const HttpRequestPtr& req, std::function<void (const HttpResponsePtr &)> &&callback)
{
    // write your application logic here

    auto resp = HttpResponse::newHttpResponse();
    resp->setStatusCode(k200OK);
    resp->setContentTypeCode(CT_TEXT_HTML);
    resp->setBody("PONG");
    callback(resp);

}

but when I try to call http://localhost/PING i get 404 Not Found

An Tao

@an-tao

did you re-cmake your project after adding this controller?

demenkovms

@demenkovms

yes, of course )

aliakbarrashidi

@aliakbarrashidi:matrix.org

[m]

LOG_TRACE << "log body";

I desire above line results a line in the log file but it doesn't.
why?
( I have set the log option correctly and I run the app in the Debug mode and others log have written to log file properly.)

An Tao

@an-tao

Did you set the log_level to TRACE?

3 replies

jamal rashidi

@jamalrashidi1_twitter

Is it possible to have nested drogon::HttpFilter for a request?
I want some requests go through multiple HttpFilters.

An Tao

@an-tao

ADD_METHOD_TO(Ctrl::handleSome, "/path/to/handler", "filter1","filter2","filter3");

jamal rashidi

@jamalrashidi1_twitter

Thanks

ADD_METHOD_TO(Ctrl::handleSome, "/path/to/handler", "filter1","filter2","filter3");

It is possible with METHOD_ADD to chain filters?

An Tao

@an-tao

yes

jamal rashidi

@jamalrashidi1_twitter

Thanks again

Ghasem Ramezani

@another-ghasem

Hi, Why the CMake files(like DrogonUtilities.cmake) are explicitly removed in the Conan recipe? How could I use functions like drogon_create_views?

Hiderr

@Hiderrr

Hello, I've got a little question regarding drogon's framework usage.
Is there any recommended way of handling HTTP requests' authorization? (Is it maybe possible to allow filters to take parameters such as an Array of required permissions? (enum values e.g.))

Rafael Bugajewski

@rbugajewski

@Hiderrr Maybe https://github.com/0rangeFox/Drogon-JWT-Filter-example can help you?

thylacinelol

@thylacinelol

Hi
Is it possible to automatically route paths to static html files?
For example, make http://localhost:3000/hello serve http://localhost:3000/hello.html if the html file exists?

P.R.

@prothegee

@thylacinelol
if you configure document_root directory and add *.html files, public can access it,
even if it's located on document_root/docs/how-to-x.html
this is also equilevant as domain.tld[:port-if-any]/docs/how-to-y.html

open this https://drogon.org/images/drogon-concise-white.png and look https://github.com/drogonframework/drogon-website/tree/master/content/images

thylacinelol

@thylacinelol

@prothegee yep, serving files works fine - I can access the page via domain.tld[:port]/hello.html, however, I want to remove the .html, so that you can access the filehello.html via domain.tld[:port]/hello.

P.R.

@prothegee

@thylacinelol

something like this doable with c++20

Home.h

namespace MyProject
{
namespace controllers
{


class Home
    :   public drogon::HttpController<Home>
{

public:
    METHOD_LIST_BEGIN
    ADD_METHOD_TO(Home::HomePage, "/", drogon::Get);
    ADD_METHOD_TO(Home::HelloPage, "/hello", drogon::Get);


    METHOD_LIST_END
    void HomePage(const drogon::HttpRequestPtr &req,
                    std::function<void(const drogon::HttpResponsePtr&)>&&callback);

    drogon::AsyncTask HelloPage(const drogon::HttpRequestPtr req,
                    std::function<void(const drogon::HttpResponsePtr&)>callback);

}; // class Home


} // namespace controllers
} // namespace MyProject

Home.cc

#include "Home.h"


using namespace backendV1::controllers;


void Home::HomePage(const drogon::HttpRequestPtr &req,
                    std::function<void(const drogon::HttpResponsePtr&)>&&callback)
{
    // ... some logic
}


drogon::AsyncTask Home::HelloPage(const drogon::HttpRequestPtr req,
                    std::function<void(const drogon::HttpResponsePtr&)>callback)
{
    auto client = drogon::HttpClient::newHttpClient("http://www.localhost.com:8001");
    auto request = drogon::HttpRequest::newHttpRequest();
    request->setMethod(drogon::Get);
    request->setPath("/hello.html");

    auto foo = co_await client->sendRequestCoro(request);
    auto bar = foo->getBody();

    std::string baz{bar};

    resp = drogon::HttpResponse::newHttpResponse();
    resp->setBody(baz);

    callback(resp);
}

I didn't know that was doable till now, LOL

P.R.

@prothegee

Otherwise I didn't know yet for another solution

P.R.

@prothegee

thylacinelol

@thylacinelol

woah nice, thanks!

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