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http_util.go
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/
http_util.go
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package core
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
func Send(params interface{}, action string) (string, error) {
param := JsonParam{
Jsonrpc: "2.0",
Method: action,
Params: params,
Id: 1,
}
resp, err := HttpPost(param)
if err != nil {
panic(fmt.Sprintf("send http post error .\n %s" + err.Error()))
}
return resp, err
}
func HttpPost(param JsonParam) (string, error) {
client := &http.Client{}
req, _ := json.Marshal(param)
reqNew := bytes.NewBuffer(req)
request, _ := http.NewRequest("POST", config.Url, reqNew)
request.Header.Set("Content-type", "application/json")
response, err := client.Do(request)
if response == nil && err != nil {
panic(fmt.Sprintf("no response from node,%s", err.Error()))
}
if err == nil && response.StatusCode == 200 {
body, _ := ioutil.ReadAll(response.Body)
return string(body), nil
} else {
panic(fmt.Sprintf("http response status :%s", response.Status))
}
}
func parseResponse(r string) *Response {
var resp = Response{}
err := json.Unmarshal([]byte(r), &resp)
if err != nil {
panic(fmt.Sprintf("parse result error ! error:%s \n", err.Error()))
}
if resp.Error.Code != 0 {
panic(fmt.Sprintf("send transaction error ,error:%v \n", resp.Error.Message))
}
return &resp
}