Node JS如何限制最大套接字数

Question

is it possibile to set the maximum number of sockets that my server can handle? Something like: maxSocket = 2 and from the 3 attempt of a socket to connect automatically refuse that connection?

Thanks

Answer 1

In Node.js, you can set the maximum number of connections per origin. If maxSockets is set, the low-level HTTP client queues requests and assigns them to sockets as they become available.

Ref URL from AWS JS SDK

According to Node.js Doc ,

By default set to Infinity. Determines how many concurrent sockets the agent can have open per origin. Origin is either a 'host:port' or 'host:port:localAddress' combination.

Conventionally, they recommend 25~50, I guess.

Answer 2

The default maxSockets value is Infinity and it determines the limit of number of sockets per host. See official docs: https://nodejs.org/api/http.html#http_agent_maxsockets

You can manually set maxSockets limit using the following code snippet

require('http').globalAgent.maxSockets = 10

globalAgent : Global instance of Agent which is used as the default for all HTTP client requests.