forked from cerc-io/plugeth
Merge pull request #15505 from karalabe/fix-rpc-pr
rpc: minor cleanups to RPC PR
This commit is contained in:
commit
c8b7ea1c2e
32
rpc/http.go
32
rpc/http.go
@ -20,6 +20,7 @@ import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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@ -151,41 +152,36 @@ func (srv *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if r.Method == "GET" && r.ContentLength == 0 && r.URL.RawQuery == "" {
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return
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}
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if responseCode, errorMessage := httpErrorResponse(r); responseCode != 0 {
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http.Error(w, errorMessage, responseCode)
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if code, err := validateRequest(r); err != nil {
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http.Error(w, err.Error(), code)
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return
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}
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// All checks passed, create a codec that reads direct from the request body
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// untilEOF and writes the response to w and order the server to process a
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// single request.
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codec := NewJSONCodec(&httpReadWriteNopCloser{r.Body, w})
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defer codec.Close()
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w.Header().Set("content-type", "application/json")
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w.Header().Set("content-type", contentType)
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srv.ServeSingleRequest(codec, OptionMethodInvocation)
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}
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// Returns a non-zero response code and error message if the request is invalid.
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func httpErrorResponse(r *http.Request) (int, string) {
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// validateRequest returns a non-zero response code and error message if the
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// request is invalid.
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func validateRequest(r *http.Request) (int, error) {
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if r.Method == "PUT" || r.Method == "DELETE" {
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errorMessage := "method not allowed"
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return http.StatusMethodNotAllowed, errorMessage
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return http.StatusMethodNotAllowed, errors.New("method not allowed")
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}
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if r.ContentLength > maxHTTPRequestContentLength {
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errorMessage := fmt.Sprintf("content length too large (%d>%d)", r.ContentLength, maxHTTPRequestContentLength)
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return http.StatusRequestEntityTooLarge, errorMessage
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err := fmt.Errorf("content length too large (%d>%d)", r.ContentLength, maxHTTPRequestContentLength)
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return http.StatusRequestEntityTooLarge, err
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}
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ct := r.Header.Get("content-type")
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mt, _, err := mime.ParseMediaType(ct)
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mt, _, err := mime.ParseMediaType(r.Header.Get("content-type"))
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if err != nil || mt != contentType {
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errorMessage := fmt.Sprintf("invalid content type, only %s is supported", contentType)
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return http.StatusUnsupportedMediaType, errorMessage
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err := fmt.Errorf("invalid content type, only %s is supported", contentType)
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return http.StatusUnsupportedMediaType, err
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}
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return 0, ""
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return 0, nil
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}
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func newCorsHandler(srv *Server, allowedOrigins []string) http.Handler {
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@ -1,3 +1,19 @@
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// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rpc
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import (
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@ -8,33 +24,31 @@ import (
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)
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func TestHTTPErrorResponseWithDelete(t *testing.T) {
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httpErrorResponseTest(t, "DELETE", contentType, "", http.StatusMethodNotAllowed)
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testHTTPErrorResponse(t, "DELETE", contentType, "", http.StatusMethodNotAllowed)
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}
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func TestHTTPErrorResponseWithPut(t *testing.T) {
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httpErrorResponseTest(t, "PUT", contentType, "", http.StatusMethodNotAllowed)
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testHTTPErrorResponse(t, "PUT", contentType, "", http.StatusMethodNotAllowed)
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}
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func TestHTTPErrorResponseWithMaxContentLength(t *testing.T) {
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body := make([]rune, maxHTTPRequestContentLength+1, maxHTTPRequestContentLength+1)
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httpErrorResponseTest(t,
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testHTTPErrorResponse(t,
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"POST", contentType, string(body), http.StatusRequestEntityTooLarge)
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}
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func TestHTTPErrorResponseWithEmptyContentType(t *testing.T) {
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httpErrorResponseTest(t, "POST", "", "", http.StatusUnsupportedMediaType)
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testHTTPErrorResponse(t, "POST", "", "", http.StatusUnsupportedMediaType)
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}
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func TestHTTPErrorResponseWithValidRequest(t *testing.T) {
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httpErrorResponseTest(t, "POST", contentType, "", 0)
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testHTTPErrorResponse(t, "POST", contentType, "", 0)
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}
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func httpErrorResponseTest(t *testing.T,
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method, contentType, body string, expectedResponse int) {
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func testHTTPErrorResponse(t *testing.T, method, contentType, body string, expected int) {
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request := httptest.NewRequest(method, "http://url.com", strings.NewReader(body))
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request.Header.Set("content-type", contentType)
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if response, _ := httpErrorResponse(request); response != expectedResponse {
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t.Fatalf("response code should be %d not %d", expectedResponse, response)
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if code, _ := validateRequest(request); code != expected {
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t.Fatalf("response code should be %d not %d", expected, code)
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}
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}
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