70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
package rpc
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import (
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"net/http"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/xeth"
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)
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var rpchttplogger = logger.NewLogger("RPC-HTTP")
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const (
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jsonrpcver = "2.0"
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maxSizeReqLength = 1024 * 1024 // 1MB
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)
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// JSONRPC returns a handler that implements the Ethereum JSON-RPC API.
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func JSONRPC(pipe *xeth.XEth, dataDir string) http.Handler {
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var json JsonWrapper
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api := NewEthereumApi(pipe, dataDir)
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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w.Header().Set("Access-Control-Allow-Origin", "*")
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rpchttplogger.DebugDetailln("Handling request")
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if req.ContentLength > maxSizeReqLength {
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jsonerr := &RpcErrorObject{-32700, "Request too large"}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
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return
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}
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reqParsed, reqerr := json.ParseRequestBody(req)
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switch reqerr.(type) {
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case nil:
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break
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case *DecodeParamError, *InsufficientParamsError, *ValidationError:
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jsonerr := &RpcErrorObject{-32602, reqerr.Error()}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
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return
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default:
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jsonerr := &RpcErrorObject{-32700, "Could not parse request"}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
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return
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}
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var response interface{}
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reserr := api.GetRequestReply(&reqParsed, &response)
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switch reserr.(type) {
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case nil:
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break
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case *NotImplementedError:
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jsonerr := &RpcErrorObject{-32601, reserr.Error()}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
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return
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case *DecodeParamError, *InsufficientParamsError, *ValidationError:
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jsonerr := &RpcErrorObject{-32602, reserr.Error()}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
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return
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default:
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jsonerr := &RpcErrorObject{-32603, reserr.Error()}
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json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
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return
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}
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rpchttplogger.DebugDetailf("Generated response: %T %s", response, response)
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json.Send(w, &RpcSuccessResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Result: response})
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})
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}
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