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The HTTP method TRACE is intended for diagnosing the path that a request has taken to the server. When a client application sends an HTTP request using the TRACE method, the server returns a response that contains a copy of the original request. This allows the client and intermediate proxy servers to track the path that the request has taken and detect any changes that have been made to the request by intermediate servers.
For example, if you are having trouble receiving a response from the server, you can use the TRACE method to track the exact path your request has taken and whether it changes along the way. When a request to the server passes through several proxy servers, the TRACE method allows you to determine if any changes have occurred in the headers or body of the request during transmission. This can help resolve issues with the network or configuration work of the intermediate servers.
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