CODEWITHSUNDEEP
google-chromewebsocketsocket.io
user2265529
user2265529

Reputation: 479

Simulate socket.io temporary disconnection in chrome

I have a simple chat app written in javascript(client and node server) with socket.io. Users are permanently connected to server. I need to test how my application behaves when connection with node-socket.io-server being dropped. I need to block socket.io connection for a few seconds and then allow my app to connect again. I need to do it using the browser, without stopping the server.

I know that chrome developer tools has a future of simulating offline mode but this future does not drops/blocks socket.io connections.

So, how can i drop socket.io connection for a few seconds using chrome browser?

Upvotes: 4

Views: 1144

Answers (1)

ofirule
ofirule

Reputation: 4669

It's possible to simulate disconnection using firewall rules on either the backend or the client side.

On the client side you need to drop all outbound packets to the server, for a few seconds

Example using iptables (will work on linux clients):

SERVER_IP="1.1.1.1"

# Append rule
iptables -A OUTPUT -d $SERVER_IP -j DROP
sleep 5
# Delete rule
iptables -D OUTPUT -d $SERVER_IP -j DROP

On the server side you need to drop all inbound packets from_the specific client, for a few seconds

Example using iptables (will work on linux clients):

CLIENT_PUBLIC_IP="2.2.2.2"

# Append rule
iptables -A INPUT -s $CLIENT_PUBLIC_IP -j DROP
sleep 5
# Delete rule
iptables -D INPUT -s $CLIENT_PUBLIC_IP -j DROP

Upvotes: 1

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