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grpc-js: channelz: Fix algorithm for representing an IPv6 address in binary

This commit is contained in:
Michael Lumish 2021-11-04 14:11:16 -07:00
parent 78466acf36
commit 1a60c4f3a9
1 changed files with 12 additions and 2 deletions
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14
packages/grpc-js/src/channelz.ts
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@ -392,6 +392,16 @@ export function unregisterChannelzRef(ref: ChannelRef | SubchannelRef | ServerRe
}
}
/**
* Parses a single section of an IPv6 address as two bytes
* @param addressSection A hexadecimal string of length up to 4
* @returns The pair of bytes representing this address section
*/
function parseIPv6Section(addressSection: string): [number, number] {
const numberValue = Number.parseInt(addressSection, 16);
return [numberValue / 256 | 0, numberValue % 256];
}
/**
* Converts an IPv4 or IPv6 address from string representation to binary
* representation
@ -412,8 +422,8 @@ function ipAddressStringToBuffer(ipAddress: string): Buffer | null {
leftSection = ipAddress.substring(0, doubleColonIndex);
rightSection = ipAddress.substring(doubleColonIndex + 2);
}
const leftBuffer = Uint8Array.from(leftSection.split(':').map(segment => Number.parseInt(segment, 16)));
const rightBuffer = rightSection ? Uint8Array.from(rightSection.split(':').map(segment => Number.parseInt(segment, 16))) : new Uint8Array();
const leftBuffer = Buffer.from(leftSection.split(':').map(segment => parseIPv6Section(segment)).flat());
const rightBuffer = rightSection ? Buffer.from(rightSection.split(':').map(segment => parseIPv6Section(segment)).flat()) : Buffer.alloc(0);
const middleBuffer = Buffer.alloc(16 - leftBuffer.length - rightBuffer.length, 0);
return Buffer.concat([leftBuffer, middleBuffer, rightBuffer]);
} else {