Stack Overflow
Stack Overflow

Questions tagged [libevent]

libevent is an API for writing event driven systems. libevent is written in C and should compile on Linux, *BSD, Mac OS X, Solaris and Windows.

From the Homepage: Libevent

libevent is meant to replace the event loop found in event driven network servers. An application just needs to call event_dispatch() and then add or remove events dynamically without having to change the event loop.

Currently, libevent supports /dev/poll, kqueue(2), event ports, select(2), poll(2) and epoll(4). The internal event mechanism is completely independent of the exposed event API, and a simple update of libevent can provide new functionality without having to redesign the applications. As a result, Libevent allows for portable application development and provides the most scalable event notification mechanism available on an operating system. Libevent can also be used for multi-threaded applications; see Steven Grimm's explanation. Libevent should compile on Linux, *BSD, Mac OS X, Solaris and Windows.

368 questions
0
votes
0 answers

Libevent - causes an error at the very start

Please tell me: I connected the libvent to the project for Windows VS2019 and called only one function Libevent: #include #include #include int main(void) { struct event_base*…
Optimus1
  • 444
  • 2
  • 13
0
votes
1 answer

How to generate a PKG CONFIG file when building libevent from source?

I'm building libevent from source with the following set of commands on Linux. export LDFLAGS="-march=x86-64 -L/home/me/locals/lib64/zlib-1.2.11-gcc-9.3.0/lib" export CPPFLAGS="-march=x86-64…
mbilyanov
  • 2,315
  • 4
  • 29
  • 49
0
votes
1 answer

Install libevent man pages from sourcecode with autotools

I've installed libevent from source code (from the git repository) with autotools. I thought the command 'make install-man' would install the man pages, but nothing is available. I've also tried setting the './configuration --datadir' option without…
fifoq
  • 183
  • 13
0
votes
1 answer

Is bufferevent_flush not necessary for a socket-based bufferevent in libevent?

From the documentation of libevent: Currently (as of Libevent 2.0.5-beta), bufferevent_flush() is only implemented for some bufferevent types. In particular, socket-based bufferevents don’t have it. I tested the following code: auto output =…
xmllmx
  • 39,765
  • 26
  • 162
  • 323
0
votes
0 answers

unable to compile thrift with mingw and libevent

I'm trying to compile the thrift cpp library from a debian and mingw toolset. I manage to compile zlib, openssl, and libevent with mingw. But when I'm trying to configure thrift, it does not detect libevent (but it detects openssl and zlib). below…
Ioan Le Gué
  • 61
  • 3
0
votes
1 answer

Hiredis publisher only sending first message in a while loop

I am quite new to Hiredis/Redis and can't manage to create a working publisher in a while loop for a Pub/Sub architecture. I succeeded in creating a publisher firing only one message, then exiting. But I'm trying to have a publisher sending messages…
RobBlanchard
  • 855
  • 3
  • 17
0
votes
0 answers

libevent stops working after a few thousand calls

Below is my initialization code from the main() evthread_use_pthreads(); struct event_config *cfg = event_config_new(); event_config_require_features(cfg, EV_FEATURE_EARLY_CLOSE); c->base =…
Jim
  • 338
  • 1
  • 14
0
votes
0 answers

Best way to "communicate" between sockets

Curently I`m developing chat aplication using C and libevent library for both client and server. I started from simple prototype, where client simply send plain string, server recive it and send it to every connected user except the sender. But now…
Mospan Kostya
  • 9
  • 4
0
votes
1 answer

unexpected socket closure on server side

I am running a sample libevent based server, however, sometimes, this server will immediately send a TCP FIN immediately after TCP handshake according to wireshark capture. The server didn't crash. The OS is ubuntu 18.04, the terminal has ulimit -n…
packetie
  • 4,839
  • 8
  • 37
  • 72
0
votes
0 answers

Libcurl multi with libevent: How to support single curl_easy timeout mechanism?

I've implemented multi example with libevent (multi-event) Additionally I add curl_easy_setopt(curl_easy, CURLOPT_TIMEOUT_MS, 10000); on_timeout do callback when after 10000ms, but I need the exactlly curl_easy obj which curl_easy_setopt…
Qilin Li
  • 25
  • 5
0
votes
0 answers

Libevent buffer truncated after read callback. How to retrieve large data from buffer

Using libevent 2.1.11, reading the input evbuffer is limited to 4096 bytes. Due to EVBUFFER_MAX_READ 4096 in buffer.c Given this information, the next read callback should be called after the first read callback with the remaining data. Running this…
reeves
  • 173
  • 1
  • 1
  • 11
0
votes
3 answers

Know of any small projects implementing an HTTP service using libevent?

My C is a bit rusty. I have some ideas I'd like to try and realize with libevent. Do you know any codebase I can use as a reference?
Vasil
  • 36,468
  • 26
  • 90
  • 114
0
votes
1 answer

Broadcast TCP-Server with libevent

I am looking for some sample code of a dead simple libevent-based TCP-Server which broadcasts incoming Messages to all connected clients. On the Web I only found TCP-Servers which echoes back messages. One echo example if found is on the bottom of…
Filipe Santos
  • 1,629
  • 3
  • 18
  • 27
0
votes
1 answer

Linker errors when linking a built libevent as a static library, but works when linking as a shared library

I've built the libevent library from source as static library using GCC compiler(on linux). Cmake options: cmake -B build -S . -DEVENT__DISABLE_OPENSSL=ON -DEVENT__LIBRARY_TYPE=STATIC -DEVENT__DISABLE_DEBUG_MODE=ON cmake --build build --config…
georg774
  • 15
  • 3
0
votes
1 answer

How to improve libevent bufferevent_write performance

For my test case, only send "00" message by bufferevent_write. case 1: 20,000 tcp connections, and send "00" to each every 10s, it will cost 0.15s. case 2: only 1 tcp connection, and send "00" 20,000 times every 10s, it will cost 0.015s. Please give…
DinoStray
  • 696
  • 1
  • 6
  • 20
1 2 3
…
24 25