#ifndef PROTOCOL_H #define PROTOCOL_H enum protocol_version { protocol_unknown_version = -1, protocol_v0 = 0, protocol_v1 = 1, protocol_v2 = 2, }; /* * Used by a client to determine which protocol version to request be used when * communicating with a server, reflecting the configured value of the * 'protocol.version' config. If unconfigured, a value of 'protocol_v0' is * returned. */ extern enum protocol_version get_protocol_version_config(void); /* * Used by a server to determine which protocol version should be used based on * a client's request, communicated via the 'GIT_PROTOCOL' environment variable * by setting appropriate values for the key 'version'. If a client doesn't * request a particular protocol version, a default of 'protocol_v0' will be * used. */ extern enum protocol_version determine_protocol_version_server(void); /* * Used by a client to determine which protocol version the server is speaking * based on the server's initial response. */ extern enum protocol_version determine_protocol_version_client(const char *server_response); #endif /* PROTOCOL_H */