Meteor.http method is undefined on server?

So, I'm trying to write a method that makes an http call. When I run the method, I get the following error:

Exception while invoking method 'upload' TypeError: Cannot call method 'call' of undefined

Here is what the code looks like:

Client:

console.log(Meteor.call('upload', f, content));
 

Server:

Meteor.methods({
   upload: function(file, content) {
     this.unblock();
     Meteor.http.call("PUT", "http://blah");
   }
 });
 

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