CODEWITHSUNDEEP
javagoogle-app-engine
TLD
TLD

Reputation: 8135

Connect to a client that has dynamic IP address

I'm working on a server-client project. I hosted server on Google app engine so there is no problem with IP there, all the clients can connect to the server easily. Yet the problem occurs when I try to connect to a client, which is quite complex because I don't have static IP for the clients. Can anyone suggest me a good way for server-client coomucication in this case, without requiring that clients must have static IP address?
Thank you very much.

Upvotes: 0

Views: 427

Answers (1)

ArtemGr
ArtemGr

Reputation: 12547

Well, obviously the client should register itself with the server and update it's IP when it changes.
There is, for example, a program which does exactly that and then publishes the IP with a DNS.

But you should be aware that the IPv4 address space is not that big and a lot of internet clients do not own an IP (and work thru the ISP's NAT). If you have clients that do not own an IP then you might want to stick to the usual Pull: the clients should periodically issue a request to the server to check if there are new messages for them. With a Keep-Alive connection and an efficient server implementation the price of such checks might actually be low, although that kind of communication might not work very well with the GAE pricing.

Upvotes: 1

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