eclipse-paho/paho.mqtt.cpp

Stars: 1.3k
Forks: 475
Open beginner issues: 0
Indexed issues: 60

Dominant language: C++
License: No license data
Last GitHub push: Jun 4, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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60 open issues indexed

MinGW compilation is not supported Open

help wanted

eclipse-paho/paho.mqtt.cpp#123 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Ability to set message_arrived callback per topic Open

eclipse-paho/paho.mqtt.cpp#202 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Destructor Hangs When Actions are in Process Open

eclipse-paho/paho.mqtt.cpp#204 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
sending takes long time when having multiple clients Open

eclipse-paho/paho.mqtt.cpp#236 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to learn active Server URI Open

eclipse-paho/paho.mqtt.cpp#237 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OPENSSL could not be located Open

eclipse-paho/paho.mqtt.cpp#242 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How do I get MQTT to support socks5 proxy？ Open

eclipse-paho/paho.mqtt.cpp#265 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Can't manage to connect to AWS broker Open

eclipse-paho/paho.mqtt.cpp#278 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
async_client Read access violation exception in basic_string: connect_options.h stores connection state: clarify persistence required Open

eclipse-paho/paho.mqtt.cpp#333 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Ubuntu package release Open

eclipse-paho/paho.mqtt.cpp#341 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Sending large messages (>1MB) over TLS Open

eclipse-paho/paho.mqtt.cpp#342 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MSVC Runtime Library Selection Open

eclipse-paho/paho.mqtt.cpp#349 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Delay for subscriber ACK Open

eclipse-paho/paho.mqtt.cpp#353 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Connection lost during message publish Open

eclipse-paho/paho.mqtt.cpp#354 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Deadlock during connection establishment Open

eclipse-paho/paho.mqtt.cpp#356 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
sync_consume sample application CONNACK error Open

eclipse-paho/paho.mqtt.cpp#357 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
multithr_pub_sub sample application doesn't subscribe to more than 2 topics Open

eclipse-paho/paho.mqtt.cpp#358 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not able to find any Paho C++ API for setting openssl engine and keyform Open

eclipse-paho/paho.mqtt.cpp#363 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Library Documentation on eclipse.org out-of-date Open

eclipse-paho/paho.mqtt.cpp#368 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
After the reconnection succeeds,again subscribe,but throwing an instance of 'mqtt::exception' what(): MQTT error [-11] Open

eclipse-paho/paho.mqtt.cpp#370 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
"what(): MQTT error [-3]: Disconnected" crashed Application Open

eclipse-paho/paho.mqtt.cpp#377 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
👨‍💻I encountered some problems during the performance test Open

eclipse-paho/paho.mqtt.cpp#383 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
client.h, is_connected() method do not match real Open

eclipse-paho/paho.mqtt.cpp#390 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
crash: mqtt::connect_options. set_http_headers Open

eclipse-paho/paho.mqtt.cpp#395 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
connection_lost is always called after keep_alive_interval timeout even if network already restored Open

eclipse-paho/paho.mqtt.cpp#398 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cross compiling error: "Could NOT find PahoMqttC (missing: PAHO_MQTT_C_LIBRARIES PAHO_MQTT_C_INCLUDE_DIRS)" Open

eclipse-paho/paho.mqtt.cpp#412 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
install the library to a non-standard location fails on find lib and undefined headers Open

eclipse-paho/paho.mqtt.cpp#427 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[samples][async_subscribe] Connect or disconnect command ignored When systemctl restart mosquitto.service Open

eclipse-paho/paho.mqtt.cpp#432 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Is the number of processing threads at the bottom of paho.mqtt.cpp fixed？ Open

eclipse-paho/paho.mqtt.cpp#434 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Token class not returning the Error Message details of connectionFailure Open

upstream

eclipse-paho/paho.mqtt.cpp#450 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Automatic Reconnect Crashes MQTT when `client.reconnect()` is called Open

eclipse-paho/paho.mqtt.cpp#465 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
SSL_read() Segmentation fault Open

More info needed

eclipse-paho/paho.mqtt.cpp#468 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
broker(emqx) already support QUIC, and i Hope client also supports the Quic protocol Open

eclipse-paho/paho.mqtt.cpp#470 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Base64TestOpenSSL giving problem and how to use only paho-mqtt3as libraray project in visual studio Open

upstream

eclipse-paho/paho.mqtt.cpp#477 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MQTT traffic over Https Proxy Open

eclipse-paho/paho.mqtt.cpp#494 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MQTTAsync_send cpu load increases a lot while buffering messages Open

upstream

eclipse-paho/paho.mqtt.cpp#495 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can not run subscription!Info:0x00007FFB16EFCF19 处(位于 mqtt_install_test_vs.exe 中)有未经处理的异常: Microsoft C++ 异常: std::bad_alloc，位于内存位置 0x000000B68D9AE370 处。 Open

eclipse-paho/paho.mqtt.cpp#501 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Running unit tests in GitHub CI Action on Windows Open

help wanted

eclipse-paho/paho.mqtt.cpp#502 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Paho sync client ssl return "Error: MQTT error [-13]: SSL is not supported [0]" Open

eclipse-paho/paho.mqtt.cpp#506 · 12 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Do you know which interface to call to set the specified network ip Open

eclipse-paho/paho.mqtt.cpp#511 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Async_client cannot reconnect after network is restored Open

eclipse-paho/paho.mqtt.cpp#521 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
The async_publish_time.cpp code has a bug: the connection is closed before starting to publish timestamp messages Open

bug

eclipse-paho/paho.mqtt.cpp#528 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
static build also with ssl lib Open

eclipse-paho/paho.mqtt.cpp#533 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
memory leak in paho mqtt library Open

eclipse-paho/paho.mqtt.cpp#541 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Why cannot an asynchronous client stay alive for a long time after being disconnected？ Open

eclipse-paho/paho.mqtt.cpp#542 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Error building tests with shared libraries on Windows Open

help wanted

eclipse-paho/paho.mqtt.cpp#543 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Problem with reconnect() in MQTT Paho C++ when Connecting to TLS Server Open

eclipse-paho/paho.mqtt.cpp#551 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
LNK2001 error occurred after update version from V1.5.0 to V1.5.2 via vcpkg Open

eclipse-paho/paho.mqtt.cpp#552 · 13 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Cross-compile in Buildroot Open

eclipse-paho/paho.mqtt.cpp#563 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Title: SIGSEGV crash with abstime=0x0 in pthread_cond_timedwait during tok->wait() Open

eclipse-paho/paho.mqtt.cpp#564 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

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