Gulden.com

Developers

Your contribution to Gulden

Gulden is decentralized and completely open source. This means that the code is accessible to everyone so everyone can contribute to Gulden in their own way. Whether you are an experienced PHP, GOlang, C++, Java or Python developer, your help is always welcome. You can write code, fix bugs, discuss code or help development.

Want to report a bug?

You can open an issue on the Gulden Github to discuss the bug.

Nodes

Support the Gulden network by running your own full node.

What Is A Full Node?

A full node is a special ‘server’ copy of the Gulden software, with no wallet, that fully validates transactions and blocks and is configured to allow incoming connections from other clients on the network.

Almost all full nodes also help the network by accepting transactions and blocks from other full nodes, validating those transactions and blocks, and then relaying them to further full nodes.

Most full nodes also serve lightweight clients by allowing them to transmit their transactions to the network and by notifying them when a transaction affects their wallet, If not enough nodes perform this function, our mobile wallets (iOS and Android) will perform poorly. It is therefore very important for the network that we continue to grow our network of full nodes to keep pace with our mobile growth.

Many people and organizations volunteer to run full nodes using spare computing and bandwidth resources—but more volunteers are needed to allow Gulden to continue to grow. This article describes how you can help and what helping will cost you.

Read the full article

Minimum Requirements:

Full nodes have certain requirements. If you try running a node on weak hardware, it may work but you’ll likely spend more time dealing with issues, and may actually negatively impact the overall network performance.

Should you can meet the following requirements, you’ll have an easy-to-use node that benefits everyone.

1. 10 gigabytes of free disk space
2. 1 gigabytes of memory or more (2gb ideally)
3. A broadband Internet connection with upload speeds of at least 400 kilobits (50 kilobytes) per second
4. An unmetered connection, a connection with high upload limits, or a connection you regularly monitor to ensure it doesn’t exceed its upload limits.
5. 6 hours a day that your full node can be left running. Ideally permanently.

For those who don’t have existing servers suitable for the task, a “developer 2” server from cloudatcost for instance is perfect for the task, and can be had for a once off cost of only $35 if you wait for one of their sales.

Of course we don’t want all nodes to be at the same location so this is just an example, the more diverse the servers on our network the better.

Linux Instructions:

The following instructions describe setting up a full node on a 64 bit Ubuntu 14 server via an ssh console. Similar steps can be followed on other operating systems.

1) Create a directory for the software

mkdir /guldenserver
cd /guldenserver

2) Download the installer

wget https://github.com/Gulden/gulden-official/releases/download/v1.6.4.6/Gulden-1.6.4.6-x86_64-linux.tar.gz

tar -xvf Gulden-1.6.4.6-x86_64-linux.tar.gz

3) Create a data directory

mkdir datadir

4) Configure the server

nano datadir/Gulden.conf

add the following lines:

disablewallet=1
maxconnections=20
rpcuser=xxx
rpcpassword=yyy

Where xxx and yyy are securely generated settings of your own that you have chosen. 20 is the recommended setting for low end machines, for higher system specifications set this to a higher number.

If you are bandwidth limited you can also optionally add maxuploadtarget= to the config.

5) Open the ports you need and enable the firewall

sudo ufw allow ssh
sudo ufw allow 9231
sudo ufw enable

6) Run the server

./GuldenD -datadir=./datadir &

7) At this point you have a working full node – however you might want to set up a script to make it easier to start it in future.

nano run.sh
killall -9 GuldenD
rm -rf seeddata/peers.dat
./GuldenD -datadir=./datadir &

8) As further final configuration you might want to add the above script to the bottom of /etc/rc.local so that it runs on boot.

9) Test

Wait half an hour or so to allow the client to sync and then run:

./Gulden-cli -datadir=datadir getconnectioncount

and

./Gulden-cli -datadir=datadir getpeerinfo

If you don’t get a reasonably high count, and at least some connections marked as inbound then something is wrong.

Special Cases

Miners, businesses, and privacy-conscious users rely on particular behavior from the full nodes they use, so they will often run their own full nodes and take special safety precautions. This document does not cover those precautions—it only describes running a dedicated full node to help support the Gulden network in general.

Please consult an expert if you need help setting up your full node correctly to handle high-value and privacy-sensitive tasks.

It’s possible and safe to run a full node to support the network and use its wallet to store your Guldens, but you must take the same precautions you would when using any Gulden wallet. Please see the securing your wallet page for more information.

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