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gRPC Handshaker

This directory contains the implementation of gRPC's handshaker framework, which is responsible for establishing a secure connection between a client and a server.

Overarching Purpose

The handshaker framework provides a pluggable mechanism for performing various handshakes, such as TLS, ALTS, and HTTP CONNECT. It is designed to be extensible, allowing new handshaker implementations to be added easily.

Files and Subdirectories

  • handshaker.h / handshaker.cc: Defines the core Handshaker class, which represents a single handshaking operation.
  • handshaker_factory.h: Defines the HandshakerFactory class, which is responsible for creating Handshaker instances.
  • handshaker_registry.h / handshaker_registry.cc: Defines a registry for HandshakerFactory instances, allowing handshakers to be looked up by name.
  • proxy_mapper.h: Defines the ProxyMapper interface, which is used to determine the proxy settings for a given target address.
  • proxy_mapper_registry.h / proxy_mapper_registry.cc: Defines a registry for ProxyMapper instances.
  • endpoint_info/: Contains the EndpointInfo class, which is a data structure that contains information about the local and remote endpoints of a connection.
  • http_connect/: Contains the implementation of the HTTP CONNECT handshaker.
  • security/: Contains the implementation of the security handshakers, which are responsible for performing TLS and ALTS handshakes.
  • tcp_connect/: Contains a basic handshaker for TCP connections.

Notes

  • The handshaker framework is a critical component of gRPC's security infrastructure.
  • It is responsible for ensuring that all connections are properly authenticated and encrypted.
  • The framework is designed to be flexible and extensible, allowing it to be adapted to different security requirements.