<p>I'm running a full node,</p>
<pre><code>bitcoind .. -zmqpubhashblock=tcp://0.0.0.0:3001 -zmqpubrawtx=tcp://0.0.0.0:3001
</code></pre>
<p><code>rawtx</code> events work great, but not getting any <code>hashblock</code> ones.
Node is <strong>fully synced</strong>, I can see new blocks received in bitcoind output, but it's not announced over zmq.
I consume zmq as fast as possible, so I don't understand why I'm not seeing the <code>hashblock</code> events.</p>

CC BY-SA 4.0
2023-05-25T00:45:33.107Z
Are you certain that your client is subscribed to receive `hashblock`?
Ava Chow
CC BY-SA 4.0
2023-05-25T07:17:39.623Z
Maybe the same endpoint is causing conflicts in receiving events? Using separate ports for `hashblock` and `rawtx` events might help.
deyw
CC BY-SA 4.0
2023-05-25T19:59:34.907Z
No idea why, but adding this solved the problem: -zmqpubrawtxhwm=50000
Eva4684
<bitcoind><zeromq><node-services>
ZMQ hashblock doesn't work
Eva4684
# ZMQ hashblock doesn't work

(Asked by: username_0 on 2023-05-24)

I'm running a full node,

```
bitcoind .. -zmqpubhashblock=tcp://0.0.0.0:3001 -zmqpubrawtx=tcp://0.0.0.0:3001

```

`rawtx` events work great, but not getting any `hashblock` ones.
Node is **fully synced**, I can see new blocks received in bitcoind output, but it's not announced over zmq.
I consume zmq as fast as possible, so I don't understand why I'm not seeing the `hashblock` events.

**Tags:** bitcoind, zeromq, node-services

> **Comments:**
> **username_1**: Are you certain that your client is subscribed to receive `hashblock`?  
> **username_2**: Maybe the same endpoint is causing conflicts in receiving events? Using separate ports for `hashblock` and `rawtx` events might help.  
> **username_0**: No idea why, but adding this solved the problem: -zmqpubrawtxhwm=50000  

---

## 0 answers

