这个问题实际上无论哪个端点(一个或两个)不在控制之内都会遇到，但这里特别需要注意。
This is really an issue when any endpoint is out of your control (one or both), but bears mentioning here.
如果只能控制一个端点，实际上问题比第一眼看起来更加微妙一些。
When you control one endpoint but not the other, the problems are actually a little more subtle than you might at first think.
要解决端点的版本控制问题，端点要做的第一步就是把文档解开，确定已经传输的内容，并用预期的内容与之协调。
To handle versioning of the endpoint, the first resolution step of the endpoint is to unpackage the document, determine what has been passed, and reconcile that with what is expected.
要解决端点的版本控制问题，端点要做的第一步就是把文档解开，确定已经传输的内容，并用预期的内容与之协调。
To handle versioning of the endpoint, the first resolution step of the endpoint is to unpackage the document, determine what has been passed, and reconcile that with what is expected.
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