July 14, 2020
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Call me maybe: RabbitMQ | Hacker News

You don't need packet,4 unless your Erlang client is also using that option, or your non-Erlang client precedes each packet with a 4-byte integer in network order that indicates the packet length. You probably also want to use the reuseaddr,true option so that you can stop the application and quickly start it again on the same port.

Tcp_listen options binary
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gen_tcp(3erl) [linux man page]

I wouldn't say better I think it is more a question of semantic: one is used to set/change default parameters, whilst another to inform driver about specific connection behavior. Relying on a (changed) default behavior may not be always desirable, as it may make program less readable - gen_tcp:listen/2 may be placed anywhere in a code, whereas the person that reads the code may want to know

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How to permanently increase RabbitMQ file descriptors limit

Sets up a socket to listen on the port Port on the local host.. If Port == 0, the underlying OS assigns an available port number, use inet:port/1 to retrieve it.. The available options are: list. Received Packet is delivered as a list.. binary. Received Packet is delivered as a binary. backlog, B B is an integer >= 0. The backlog value defaults to 5.

Tcp_listen options binary
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RabbitMQ: Queues filling up - No consumers

rabbitmq mqtt config. GitHub Gist: instantly share code, notes, and snippets.

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a sample rabbitmq config file, tested with RabbitMQ 3.0.2

2018/01/02 · a sample rabbitmq config file, tested with RabbitMQ 3.0.2, Erlang R15B01 - rabbitmq.config

Tcp_listen options binary
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gen_tcp(3erl) — erlang-manpages — Debian wheezy-backports

2017/06/21 · Is there any way for me to check if the tcp_listen_options are actually applied? I have already checked that the configuration file is correct and other properties do get applied, i have also tried to change the underlying OS defaults of rmem to "4096 4096 6291456" (wmem accordingly) but the binaries memory usage stays the same:-( The application is almost totally at idle after some initial

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VMware vCloud Director lost connection with AMQ |VMware

Hi, I am setting up Mitaka right now. I noticed that RabbitMQ keeps growing and growing and I could see that there are certain queues that are concerned: q-agent-notifier-tunnel-update_fanout* q-agent-notifier-port-update_fanout* q-agent-notifier-security_group-update_fanout* None of these queues have any consumers but keep receiving messages.

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RabbitMQ-Docker-cluster/rabbitmq.config at master

Now, obviously this isn't actually listening yet :) Looking at the gen_tcp documentation, it houses a function called listen that takes two arguments: the port on which to listen, and the TCP options. The TCP options is a list of options. We want to say that the data received over the socket will be interpreted as a binary.

Tcp_listen options binary
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gen_tcp.3erl - Interface to TCP/IP sockets - man page

Name gen_tcp - Interface to TCP/IP sockets Description. The gen_tcp module provides functions for communicating with sockets using the TCP/IP protocol.. The following code fragment provides a simple example of a client connecting to a server at port 5678, transferring a binary and closing the connection:

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gen_tcp(3): Interface to TCP/IP sockets - Linux man page

If this option is used in a frontend, only the client side will get keep-alives, and if this option is used in a backend, only the server side will get keep-alives. For this reason, it is strongly recommended to explicitly use "option clitcpka" and "option srvtcpka" when the configuration is split between frontends and backends." Just do this.

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gen_tcp(3erl) — erlang-manpages — Debian jessie-backports

1-31 TTY lines (TCP ports mapped from 2001 or 6001 depends binary or ascii mode to 2032 or 6032) 33 aux. 33 - rest used for VTY access. It looks that your platform supports a 4 port asynch card anyway. If that you telnet to 2005 or 6005 than this will be a reverse telnet connection to your aux port.

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socat: Linux / UNIX TCP Port Forwarder - nixCraft

I'm trying to understand the best way to set up physical networking for OpenStack, and having some troubles getting my head around how to navigate the possible options. I'm just working with a single node at the moment, so not even worrying about communication between nodes yet.

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Erlang: A Generalized TCP Server - 20bits

5.15. Message Queue Performance¶ status. ready. version. 1.0. Abstract. This document describes a test plan for measuring performance of OpenStack message bus.

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Why binary memory usage grows up on rabbitmq - Stack Overflow

One more option to use if it suits your use case is message expiry. Let's say you are using RabbitMQ to send notifications to your users. You will however write them to a database and to make a notification, you may send it via RMQ.

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[SES/PNS] - Configure RabbitMQ to listen on localhost only

In my last few articles about Erlang we've covered the basics of network programming with gen_tcp and Erlang/OTP's gen_server, or generic server, module.Let's combine the two. In most people's minds "server" means network server, but Erlang uses the terminology in the most abstract sense.

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[erlang-questions] Setting socket options on listen

2014/06/08 · RabbitMQ requiring a reliable network is causing problems for us in production. Anyone else struggled with this? We're running several clusters on different providers; one is Digital Ocean, another is on a partner's VMware vMotion-based system.

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Configuration - VMware

5.14.1.1. Test Environment¶. This section describes the setup for message queue testing. It can be either a single (all-in-one) or a multi-node installation.