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rafthttp: make ConnReadLimitByte private and add comment

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This commit is contained in:
Xiang Li 2015-10-17 22:20:36 -07:00
parent d07c9b00e5
commit 080c11d14e
1 changed files with 9 additions and 3 deletions
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12
rafthttp/http.go
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@ -29,7 +29,13 @@ import (
) )
const ( const (
ConnReadLimitByte = 64 * 1024 // connReadLimitByte limits the number of bytes
// a single read can read out.
//
// 64KB should be large enough for not causing
// throughput bottleneck as well as small enough
// for not causing a read timeout.
connReadLimitByte = 64 * 1024
) )
var ( var (
@ -94,8 +100,8 @@ func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
} }
// Limit the data size that could be read from the request body, which ensures that read from // Limit the data size that could be read from the request body, which ensures that read from
// connection will not time out accidentally due to possible block in underlying implementation. // connection will not time out accidentally due to possible blocking in underlying implementation.
limitedr := pioutil.NewLimitedBufferReader(r.Body, ConnReadLimitByte) limitedr := pioutil.NewLimitedBufferReader(r.Body, connReadLimitByte)
b, err := ioutil.ReadAll(limitedr) b, err := ioutil.ReadAll(limitedr)
if err != nil { if err != nil {
plog.Errorf("failed to read raft message (%v)", err) plog.Errorf("failed to read raft message (%v)", err)