Golang download a file

Please provide me with some constructive comment as to how I can fix the problems that made you down vote this post. This is a low quality question, in that it's simply asking for code to do something that would take little effort to look up in the documentation. But, since you posted it with the intent of providing the code yourself, I'll give you an up vote for effort ; — JimB. Add a comment.

Active Oldest Votes. After some research I came up with this. Create filepath if err! Get url if err! Copy out, resp. Body if err! Improve this answer. Fatal calls os. Exit , so the panics do nothing plus, you generally shouldn't panic over basic errors. You're not closing the response body please read the http package docs , which will leak connections.

There's no reason to buffer the entire file in memory, you can copy the download directly to an open file. Get fullURLFile if err! Copy file, resp. Body defer file. Close fmt. Get ". Println "Download saved to", resp. Google Api Call. Files will be transferred three at a time, as 3 is given for the worker count parameter in the call to grab.

To download all files immediately one worker per request , simply give 0 as the worker count parameter. Each download will be saved to the current working directory as ". These will be sent via the channel returned by grab. GetBatch each time a worker starts a requested URL.

None of the previous convenience methods offer any control over the HTTP request or transport. Client , grab. Request and grab. In the same way that the grab.

Client , one or more grab. Requests and pass them to one of the grab. Response for each request. You may also configure the HTTP request itself, including request headers, cookies, authentication, etc. Request nested in the grab. Base resp. String and import the path package.

Edd is the Lead Developer at Hoowla, a prop-tech startup, where he spends much of his time working on production-ready Go and PHP code. He loves coding, but also enjoys cycling and camping in his spare time.

See something which isn't right?