drogon/community

Note: we're not always in, but we get email notifications about activity!

P.R.

@prothegee

Hi, is anyone know how to change cookie domain name?

aliakbarrashidi

@aliakbarrashidi:matrix.org

Hi, how can I stop accepting more than particular amount of request from one origin ( based on IP or whatever else) to prevent scrapping my endpoints?

2 replies

headofdeveloper

@headofdeveloper

hi @an-tao, we have an issue related to LOG_DEBUG macro. When we integrate our system with an external logging system which uses syslog, as syslog has same macro it is overriding. Is it possbile to use some prefix before those macros. LOG_DEBUG, LOG_ERROR etc is very common and mostly logging libraries uses them.

An Tao

@an-tao

Hi, is anyone know how to change cookie domain name?

I don't think drogon sends domain name in session cookie, please confirm it via packet capturing tools.

1 reply

hi @an-tao, we have an issue related to LOG_DEBUG macro. When we integrate our system with an external logging system which uses syslog, as syslog has same macro it is overriding. Is it possbile to use some prefix before those macros. LOG_DEBUG, LOG_ERROR etc is very common and mostly logging libraries uses them.

The solution I can think of is to compile your app with dragon source code, then resolve the conflict by string replacing

Ichiro

@HadesD

how can I make two request not blocking each-others?
Currently my problem:

request1: run with block HttpClient Request inside
request2: has to wait request1 completed (callback)

How can I continue request2 without wait request1 to completed?

Ichiro

@HadesD

ok, I use coro + CurrentThreadEventLoop then it solved problem

I think you should add document to coroutines https://drogon.docsforge.com/master/coroutines/#enabling-coroutines
add example of HttpClient also

@an-tao ↑

Ichiro

@HadesD

Re-tested
I 've found this, if I build drogon with ./build.sh -t , it not problem with deadlock when use coro.httpclient on controller, without -t flag, it will be trouble with deadlock

house-mouse

@house-mouse

Hello Drogon folks! Thanks for your awesome work on this project! I am wondering if it's possible to have wildcards in websocket urls? Can something like WS_PATH_ADD("/session/{1}") be used and then the path parameter picked up in some way similar to how METHOD_ADD works with something like METHOD_ADD(Book::getInfo,"/{1}",Get); ? It looks like METHOD_ADD doesn't have any method like Ws akin to Get or Post to be able to catch things before websocket negotiation fully turns the request into a websocket connection, so I'm not sure where or how I might be able to grab the url early in the negotiation? Thanks for any thoughts!

An Tao

@an-tao

Currently you can't do that. WebsocketController is just like HttpSimpleController. it doesn't support parameters mapping. you can add your parameters to the query string or the body of requests.

house-mouse

@house-mouse

Thanks for the quick reply!

P.R.

@prothegee

Hi everyone,
what is the equivalent of:

auto cmd = R"(
    update public.account_verification_email set token_expired=true where email=$1;
)";
db->execSqlAsyncFuture(cmd, u_email);

in drogon::orm ?

<br>

I tried:

orm::Mapper<AccountVerificationEmail> aveMP(db);

aveMP.updateFutureBy(
    AccountVerificationEmail::Cols::_token_expired,
        orm::Criteria(AccountVerificationEmail::Cols::_email,
        orm::CompareOperator::Like, u_email),
            true);

but gets error:

[build] /home/prg/backend/beCPP/db/postgresdb.h:326:53: note:   cannot convert ‘drogon_model::database_name::AccountVerificationEmail::Cols::_token_expired’ (type ‘const string’ {aka ‘const std::__cxx11::basic_string<char>’}) to type ‘const std::vector<std::__cxx11::basic_string<char> >&’
[build]   326 |                     AccountVerificationEmail::Cols::_token_expired,
[build]       |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

these column was actually boolean.

Can someone correct me which part should be change?

Raw sql command is fine, but I want to maximize using drogon orm.

An Tao

@an-tao

The first parameter of the update method is a vector for updating multiple columns, try this:

aveMP.updateFutureBy(
    {AccountVerificationEmail::Cols::_token_expired},
        orm::Criteria(AccountVerificationEmail::Cols::_email,
        orm::CompareOperator::Like, u_email),
            true);

1 reply

HadiAbbasi

@HadiAbbasi

Hi
I wanna create a none-blocking parallel thread (maybe like future) as I wanna execute a scenario (function) with thread sleep (like change in a file after 30 seconds for my tests)!
I didn't find any solution in drogon!
even when I wanna use std::thread , there is an unknown error which stops drogon server!
"terminate called without an active exception"
could you please help me to find my solution?
thanks a lot...
All The Best,
Hadi

11 replies

ammanabrolua

@ammanabrolua

is there a way to upload videos in drogon?

please let me know of any examples

Rafael Bugajewski

@rbugajewski

@ammanabrolua Did you already try with newFileUploadRequest? — https://drogon.docsforge.com/master/api/drogon/HttpRequest/newFileUploadRequest/

And if you mean the other direction, then just take a look at the upload example — https://github.com/drogonframework/drogon/blob/master/examples/file_upload/file_upload.cc

ammanabrolua

@ammanabrolua

How to navigate from one .csp to another. csp file?

on click of button

Please let me know

Also, how to pass the data in this case?

ammanabrolua

@ammanabrolua

How to create json array in drogon c++?

1 reply

ammanabrolua

@ammanabrolua

I have a question if video streaming possible in drogon?

Ichiro

@HadesD

@an-tao
drogon doesnot support this?

WojciechMigda

@WojciechMigda

Hi, if I were to use both drogon and boost.asio in a single program, is there a recommended way to do that, preferrably without launching separate threads for each?

1 reply

Suganthan BC

@SuganthanBC

I have a question if video streaming possible in drogon?

I wonder the same

An Tao

@an-tao

you could use the trantor::Logger::setOutputFunction() method to output drogon logs to your log system.

Suganthan BC

@SuganthanBC

I am getting an error while trying to run drogon_ctl:

drogon_ctl: error while loading shared libraries: libjsoncpp.so.25: cannot open shared object file: No such file or directory

1 reply

Does anybody have a clue on how to resolve this? I cloned jsoncpp on the $WORK_PATH

and of course follwed all the instructions and did make && sudo make install

mike

@gnu-enjoyer

when using a custom constructor HttpController w/ .registerController(ctrlPtr) before .run() the ctor runs OK but it doesn't seem to route the path e.g. /test as a GET method never calls the Controller's method. I've tried Cmake .. etc. to regenerate the proj am I missing something? I can get all the examples working so I'm thinking my issue is w/ the InitPathRouting stuff

mike

@gnu-enjoyer

nvm think I fixed it by using ADD_METHOD_TO macro instead of METHOD_ADD

TennisBowling

@TennisBowling

hey, how can I get a request's body?

with registerHandler

(like inside of that lambda)

An Tao

@an-tao

    app().registerHandler(
        "/hello",
        [](const HttpRequestPtr &req,
           std::function<void(const HttpResponsePtr &)> &&callback)
           {
                LOG_DEBUG << req->body();
                callback(drogon::HttpResponse::newHttpResponse());
          });

ScaredLaptop

@ScaredLaptop

Is there a reason why the program would be segfaulting on the mapper.findAll when I try to access the endpoint generated by the restful controllers?

An Tao

@an-tao

Sounds like a bug, would u please make a simple example to reproduce this issue, I'll figure it out.

5 replies

Behnam Sabaghi

@FONQRI

Hi.
In documents written response->getJsonObject() will return an empty shared_ptr of response is not json object but for me it's cause crash

20220725 08:28:44.788119 UTC 45246 ERROR * Line 1, Column 1
  Syntax error: value, object or array expected.
 - HttpResponseImpl.cc:832
20220725 08:28:44.788201 UTC 45246 ERROR body: <html>
<head><title>404 Not Found</title></head>
<body bgcolor="white" text="black">
<center><h1>404 Not Found</h1></center>
<hr><center>drogon/1.7.5</center>
</body>
</html>
<!-- a padding to disable MSIE and Chrome friendly error page -->
<!-- a padding to disable MSIE and Chrome friendly error page -->
<!-- a padding to disable MSIE and Chrome friendly error page -->
<!-- a padding to disable MSIE and Chrome friendly error page -->
<!-- a padding to disable MSIE and Chrome friendly error page -->
<!-- a padding to disable MSIE and Chrome friendly error page -->
 - HttpResponseImpl.cc:833
Press <RETURN> to close this window...

Am I mistaken?

2 replies

Greisberger Christophe

@Greisby

Hi, I have a question regarding the AOP of drogon (https://drogon.docsforge.com/master/aop-aspect-oriented-programming/#aop-schematic)

Is it possible to graft somewhere between the pre-handling join-point and the Hander to do some kind of task during the processing of the data of an http request? The default handler is called only at the end of the upload.

For example: on a file upload, insert a callback that creates on start a database entry, so that the file is immediately available for clients, then updates the databse entry during the upload.

Intended usage: record audio and send it chunked to the server until the end of the recording, AND make the partial audio file immediately available for re-serving for other clients (play during record).

6 replies

Arpan Sen

@arpan-ventura

Hello Drogon folks! Is there a way to rate limit/conflate the messages of the Drogon Websocket Server. I need the websocket server to publish no more than 1 message/sec per topic. I am planning to use Redis as the source of truth for the Websocket Server FYI

Ichiro

@HadesD

I'm trying to use trantor::TcpClient as bellow code, and it always throw connect fail

        trantor::InetAddress inetInfo("127.0.0.1", 1102);

        auto socketClient =
            trantor::TcpClient(trantor::EventLoop::getEventLoopOfCurrentThread(), inetInfo, "kick-ass-gamer");

        try {
            socketClient.setConnectionCallback([](const trantor::TcpConnectionPtr &conn) {
                if (conn->connected()) {
                    LOG_INFO << "connected to db";
                } else {
                    LOG_ERROR << "connect to db failed";
                }
            });
            socketClient.setConnectionErrorCallback([]() { LOG_DEBUG << "connect to db error"; });
            socketClient.connect();

            const auto connPtr = socketClient.connection();
            if (!connPtr) {
                throw std::runtime_error("Connect to db failed #" + std::to_string(server.getValueOfId()));
            }

            // connPtr->send(reinterpret_cast<const char *>(&packets[0]), packets.size());

            socketClient.disconnect();
        } catch (const std::exception &e) {
            LOG_ERROR << e.what();
        }

        socketClient.stop();

5 replies

Marcos Oliveira

@terroo

Does anyone have a basic MySQL connection test example?

Where communities thrive

People

Repo info

Activity