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50 lines
1.2 KiB
50 lines
1.2 KiB
package rpc
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import (
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"bytes"
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"encoding/json"
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"errors"
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"io/ioutil"
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"net/http"
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"github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/common"
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)
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func Call(remote string, method string, params []interface{}, dest interface{}) (interface{}, error) {
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// Make request and get responseBytes
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request := RPCRequest{
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JSONRPC: "2.0",
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Method: method,
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Params: params,
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Id: 0,
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}
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requestBytes := binary.JSONBytes(request)
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requestBuf := bytes.NewBuffer(requestBytes)
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log.Debug(Fmt("RPC request to %v: %v", remote, string(requestBytes)))
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httpResponse, err := http.Post(remote, "text/json", requestBuf)
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if err != nil {
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return dest, err
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}
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defer httpResponse.Body.Close()
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responseBytes, err := ioutil.ReadAll(httpResponse.Body)
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if err != nil {
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return dest, err
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}
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log.Debug(Fmt("RPC response: %v", string(responseBytes)))
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// Parse response into JSONResponse
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response := RPCResponse{}
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err = json.Unmarshal(responseBytes, &response)
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if err != nil {
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return dest, err
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}
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// Parse response into dest
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resultJSONObject := response.Result
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errorStr := response.Error
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if errorStr != "" {
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return dest, errors.New(errorStr)
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}
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dest = binary.ReadJSONObject(dest, resultJSONObject, &err)
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return dest, err
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}
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