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packets: limit chain locators.

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Christopher Jeffrey 2017-01-22 20:05:07 -08:00
parent 00f24dc11e
commit e32f521a43
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1 changed files with 4 additions and 0 deletions
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lib/net/packets.js
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@ -977,6 +977,8 @@ GetBlocksPacket.prototype.getSize = function getSize() {
GetBlocksPacket.prototype.toWriter = function toWriter(bw) {
var i;
assert(this.locator.length <= 50000, 'Too many block hashes.');
bw.writeU32(this.version);
bw.writeVarint(this.locator.length);
@ -1011,6 +1013,8 @@ GetBlocksPacket.prototype.fromReader = function fromReader(br) {
count = br.readVarint();
assert(count <= 50000, 'Too many block hashes.');
for (i = 0; i < count; i++)
this.locator.push(br.readHash('hex'));