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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
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5db8f447
编写于
6月 29, 2015
作者:
P
Péter Szilágyi
浏览文件
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电子邮件补丁
差异文件
eth: fix #1319, put an upper limit on the known txns and blocks
上级
6fc85f1e
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
19 addition
and
0 deletion
+19
-0
eth/peer.go
eth/peer.go
+19
-0
未找到文件。
eth/peer.go
浏览文件 @
5db8f447
...
...
@@ -20,6 +20,11 @@ var (
errNotRegistered
=
errors
.
New
(
"peer is not registered"
)
)
const
(
maxKnownTxs
=
32768
// Maximum transactions hashes to keep in the known list (prevent DOS)
maxKnownBlocks
=
1024
// Maximum block hashes to keep in the known list (prevent DOS)
)
type
statusMsgData
struct
{
ProtocolVersion
uint32
NetworkId
uint32
...
...
@@ -101,12 +106,26 @@ func (p *peer) SetTd(td *big.Int) {
// MarkBlock marks a block as known for the peer, ensuring that the block will
// never be propagated to this particular peer.
func
(
p
*
peer
)
MarkBlock
(
hash
common
.
Hash
)
{
// If we reached the memory allowance, drop a previously known block hash
if
p
.
knownBlocks
.
Size
()
>=
maxKnownBlocks
{
p
.
knownBlocks
.
Each
(
func
(
item
interface
{})
bool
{
p
.
knownBlocks
.
Remove
(
item
)
return
p
.
knownBlocks
.
Size
()
>=
maxKnownBlocks
})
}
p
.
knownBlocks
.
Add
(
hash
)
}
// MarkTransaction marks a transaction as known for the peer, ensuring that it
// will never be propagated to this particular peer.
func
(
p
*
peer
)
MarkTransaction
(
hash
common
.
Hash
)
{
// If we reached the memory allowance, drop a previously known transaction hash
if
p
.
knownTxs
.
Size
()
>=
maxKnownTxs
{
p
.
knownTxs
.
Each
(
func
(
item
interface
{})
bool
{
p
.
knownTxs
.
Remove
(
item
)
return
p
.
knownTxs
.
Size
()
>=
maxKnownTxs
})
}
p
.
knownTxs
.
Add
(
hash
)
}
...
...
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