drogon/community

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Martin Chang

@marty1885

You need to install boost

Yernar Aldabergenov

@yernar

Hello everyone! I've just came across this framework and got interested. But, I have spotted that the framework doesn't have security(like in spring) and data validation. How are you guys dealing with it?

HadiAbbasi

@HadiAbbasi

@marty1885

thanks a lot... @marty1885
it worked for me...
Here is the full bash script that I created for drogon easy setup on my ubuntu server...

drogon_installer_on_debian_ubuntu.sh

just put this script in a path and run the below command on it!
bash drogon_installer_on_debian_ubuntu.sh install_drogon

HadiAbbasi

@HadiAbbasi

I appreciate you...

praveenpillay

@praveenpillay

Can we enable history mode in dragon?

Martin Chang

@marty1885

Can we enable history mode in dragon?

You can add a pre-pahdling/sync-advice AOP and rewrite the document path there.

ciclonite

@ciclonite

Hi All! I've installed Drogon locally, but when i try to compile the project this error come up :
make Error at CMakeLists.txt:43 (find_package):
Could not find a package configuration file provided by "Drogon" with any
of the following names:
DrogonConfig.cmake
drogon-config.cmake
But if i search those files :
sudo find / -name DrogonConfig.cmake
/usr/local/lib/cmake/Drogon/DrogonConfig.cmake
Thanks

cmake -version
cmake version 3.16.3

Martin Chang

@marty1885

@ciclonite I think your CMake is not configured to search /usr/local/lib/cmake. Try remove it from /usr/local and install drogon to /usr

ex:

sudo rm /usr/local/include/drogon /usr/local/lib/libdrogon.a /usr/local/lib/cmake/DrogonConfig.cmake
# In build directory
cmake -DCMAKE_INSTALL_PREFIX=/usr/ ../..
make
sudo make install

ciclonite

@ciclonite

Hi Martin, thank you for reply, i've tried without success :

find / -name libdrogon.a
/home/ciclonite/drogon/build/libdrogon.a
/usr/lib/libdrogon.a

Martin Chang

@marty1885

Now it can't link?

ciclonite

@ciclonite

Nope, i'm investigating if there is a problem with my cmake

Martin Chang

@marty1885

I think it's just the case that your CMake is not built to search those paths

praveenpillay

@praveenpillay

Do we support flatbuffers in websocket?

An Tao

@an-tao

Not yet, you need to integrate it yourself.

aliakbarRashidi

@aliakbarRashidi

Hello Mr An Tao. more power to your elbow. Has Swagger integration been finished?

An Tao

@an-tao

No, there was a man want to do it, so I didn't focus on it recently.

Serdar Gürer

@Radresingen

Hello everyone i have a problem. I am using httpclient of drogon framework and trying to make a http request to a domain, however i get InvalidCertificate as a result. Is there a way to not to check ssl when making a request ?

Martin Chang

@marty1885

@Radresingen When creating the client. Set validateCert to false.

auto client = HttpClient::newHttpClient(/*host=*/"https://127.0.0.1:8849",
                                            /*eventLoop=*/app().getLoop(),
                                            /*useOldTLS=*/false,
                                            /*validateCert=*/false);

Martin Chang

@marty1885

Let us know if curl or a browser doesn't complain about bad SSL for that endpoint. In that case it can be a bug in our validation code

Ghasem Ramezani

@another-ghasem

Hello everyone, I'm using trantor::Logger for logging and trantor::AsyncFileLogger for logging into file. But trantor::AsyncFileLogger uses a Buffer for some reasons and I need to have control over flushing this buffer from the user-code (the code which uses LOG_INFO, LOG_TRACE, ...) something like std::endl which flushes the stream buffer. I want this for debugging purposes. How could I achieve this?

An Tao

@an-tao

you could use the flush() method of trantor::AsyncFileLogger class to achieve this.

Ghasem Ramezani

@another-ghasem

you could use the flush() method of trantor::AsyncFileLogger class to achieve this.

How could I call flush() when I'm using the logging macros? (LOG_INFO, LOG_TRACE, ...).

An Tao

@an-tao

use LOG_ERROR or higher level of logs.

GeorgeDuckman

@GeorgeDuckman

Hello everyone, I want to apologize if my question is stupid, I'm new to the web/sql in general, but is it possible to mix the SQL query methods of drogon? Or should we avoid doing so?

For example making an execSqlSync query inside a callback of an execSqlAsync query?

I ask this because when I tried, the query inside the callback always got stuck. I spent a good 20 minutes on it before trying to simply change my configuration to allocate more than one connection to the database and poof it worked! Does this mean that within an execSqlAsync callback the connection is not yet closed?

In that case, should I pass all my queries to execSqlAsyncFuture?

An Tao

@an-tao

you should use the execSqlAsync method in the callback.

GeorgeDuckman

@GeorgeDuckman

Thank you for your reply !

An Tao

@an-tao

U are welcome

and you could try to use coroutines to avoid the callback hell.

GeorgeDuckman

@GeorgeDuckman

I think I'll definitely do that thanks

Martin Chang

@marty1885

Yeah. Use coroutines when you can.

Ibroheem

@ibroheem

and you could try to use coroutines to avoid the callback hell.

Disrespecting callback eh.

HadiAbbasi

@HadiAbbasi

hello
I'm looking for a way to add custom header for specific file!

I've added <img src="./imgs/img.jpg"> tag in my view csp file and just I wanna addHeader like Cache-Control for that image!
I thought I can set it by this way but there is no any header in chrome developer-tools->network tab -> selected image headers!
in csp file:
<img src = "./imgs/img.jpg" width="100%" height = "100%"/>

in controller.h:
PATH_ADD("/imgs/img.jpg",Get,Post);

in controller.cc
void ClientPageCtrl::asyncHandleHttpRequest(const HttpRequestPtr& req, std::function<void (const HttpResponsePtr &)> &&callback)
{
}

as I know, we can make a new response using newHttpResponse here, but I don't know how I can set my custom header for specific file!
thanks a lot...
Best,
Hadi

HadiAbbasi

@HadiAbbasi

sorry I don't know how to add my codes in code area (code block) in community!

HadiAbbasi

@HadiAbbasi

now I can load my image file & set it to response body and set-header is successful!

include "ClientPageCtrl.h"
include <fstream>
include <iostream>
include <sstream>
void ClientPageCtrl::asyncHandleHttpRequest(const HttpRequestPtr& req, std::function<void (const HttpResponsePtr &)> &&callback)
{
auto resp=HttpResponse::newHttpResponse();
resp->setStatusCode(k200OK);
resp->setContentTypeCode(CT_IMAGE_JPG);
resp->addHeader("Cache-Control", "no-cache222");
std::ifstream inFile;
inFile.open("/home/CDN/drogon/CDN/build/imgs/img.jpg"); //open the input file
std::stringstream strStream;
strStream << inFile.rdbuf(); //read the file
std::string str = strStream.str(); //str holds the content of the file
resp->setBody(str);
callback(resp);
}

but is there any filter on response phase to simply set header on file?

An Tao

@an-tao

you could use the newFileResponse method

3 replies

Kaung Zaw Htet

@KaungZawHtet

When will drogon 2 be launched? So excited to see it

Martin Chang

@marty1885

It's a moving goal right now. The maintainers have limited time and have to work on both projects.

We have already backported a lot of drogon2's features into drogon (test framework, etc...). So you are not missing out on anything

zxcvbnm111111

@zxcvbnm111111:matrix.org

[m]

How can I save the file I'm getting from a POST request in Drogon?

An Tao

@an-tao

please search the MultiPartParser in drogon project

1 reply

Ibroheem

@ibroheem

drogon::nosql::RedisClientPtr drogon::nosql::RedisClientManager::getRedisClient(const string&): Assertion `redisClientsMap_.find(name) != redisClientsMap_.end()

When trying to use Redis

Ibroheem

@ibroheem

Happens when I try to use:

drogon::app().createRedisClient("127.0.0.1", 6379); drogon::nosql::RedisClientPtr redisClient = app().getRedisClient();

But when I use:

nosql::RedisClientPtr redisClient = nosql::RedisClient::newRedisClient(InetAddress("127.0.0.1", 6379));

It's OK.

Martin Chang

@marty1885

getRedisClient() only works on Drogon's main event thread and worker thread. (Which is different from the process's main thread

You'll get that error when calling getRedisClien and getDbClient from non worker threads.

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