Go HTTP客户端添加了服务不支持的分块编码

Question

The go HTTP client is adding a "chunked" transfer encoding field to my client request. Unfortunately, this is not supported by the service I'm connecting to and it comes back with an error.

Is there a way to disable this?

This is my Request code:

// DoHTTPRequest Do a full HTTP Client Request, with timeout
func DoHTTPRequest(method, url string, body io.Reader, headers map[string]string, timeout time.Duration) (*http.Response, error) {

    // Create the request
    req, err := http.NewRequest(method, url, body)
    if err != nil {
        return nil, err
    }

    // Add headers
    for k, v := range headers {
        req.Header.Set(k, v)
    }

    client := &http.Client{
        Timeout: timeout,
    }

    return client.Do(req)
}

Basically I would like this header dropped. This client is talking to S3 which is rather sensitive as to what headers it is sent.

I get this error:

A header you provided implies functionality that is not implemented

Answer 1

TransferEncoding is a field directly on the Request struct. If you set it explicitly it will not be overridden.

req.TransferEncoding = []string{"identity"}

https://golang.org/pkg/net/http/#Request