equivalent to curl --data in go http request payload - go

Question

For the purpose of setting a K/V in a NoSQL storage, I need to create an equivalent to the following curl command in go:
curl -H "Content-Type: text/xml" --data '[...]' http://localhost:8000/test/testrow/test:testcolumn
I am trying to use something in the lines of the following code for that purpose, although I am unable to find how to set the binary data []byte(value) as a POST payload.
func setColumn(table string, key string, col string, value string) {
url := "http://localhost:8123/" + table + "/" + key + "/" + col
req, err := http.NewRequest("POST", url, nil)
req.Header.Set("Content-Type", "application/octet-stream")
data = []byte(value)
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
// handle error
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
So, how to map the data payload within the POST request ? Any indicators are welcome.

Answer 1

In order to post any data you should pass the value instead of nil
in the Newrequest method.
This should work
func setColumn(table string, key string, col string, value string) {
url := "http://localhost:8123/" + table + "/" + key + "/" + col
**data := bytes.NewReader([]byte(value))**
req, err := http.NewRequest("POST", url, **data**)
req.Header.Set("Content-Type", "application/octet-stream")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
// handle error
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
fmt.Println(string(body))
}
Most of the NoSQL Servers has GO API use them instad of creating your own HTTP request.