hai007
dc2d249cc4
Storage increase will be:
1.Build version: take RQ3A.210805.001.A1 as example, it needs 18 bytes in one device, so need 36 bytes in two devices.
2.Incoming or outgoing conection (
4 bytes tech +
4 bytes band +
4 bytes channel +
6 bytes network_operator +
2 bytes country_code +
1 byte tdls +
4 bytes try_counts +
1 byte wifi_ap_status +
4 bytes max_tx_speed +
4 bytes max_rx_speed) = 34 bytes)
So need 34*4 = 136 bytes in two directions initial connections and two directions bandwidth upgrades.
So there are total 172 bytes grows in each share.
(172 bytes in each sharing * 400000 shares/daily * 7 days/week) / GB = about 0.45 GB) (400000 was based on current shares/daily in Prod.)
PiperOrigin-RevId: 390282437
Nearby Connections Library
This is not an officially supported Google product.
Coathored by:
- (Java/C++) Varun Kapoor “reznor”
- (Java) Maria-Ines Carrera “marianines”
- (Java) Will Harmon “xlythe”
- (Java/C++/ObjC) Alex Kang “alexanderkang”
- (Java/C++) Amanda Lee “ahlee”
- (C++) Tracy Zhou “tracyzhou”
- (ObjC) Dan Webb “dwebb”
- (C++) John Kaczor “johngk”
- (C++/ObjC) Edwin Wu “edwinwu”
- (C++) Alexey Polyudov “apolyudov”
Status: Implemented in C++
Design reviewers: TODO
Implementation reviewer: TODO
Last Updated: TODO
Overview
Nearby Connections is a high level protocol on top of Bluetooth/WiFi that acts as a medium-agnostic socket. Devices are able to advertise, scan, and connect with one another over any shared medium (eg. BT <-> BT). Once connected, the two devices share a list of all supported mediums and attempt to upgrade to the one with the highest bandwidth (eg. BT -> WiFi). The connection is encrypted, reliable, and fully duplex. BYTE, FILE, and STREAM payloads are all supported and will be chunked & transferred internally and recombined on the receiving device. See Nearby Connections Overview for more information.
Checkout, build, test instructions
Checkout
pre-requisites: git
git clone https://github.com/google/nearby-connections
cd nearby-connections
git submodule update --init --recursive
this is a "source root" directory of the project
Build
pre-requisites: openssl, cmake, c++ toolchain (c++17-capable)
TODO
Running unit tests
TODO