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373d70efb2
Create protocol.{c,h} and provide functions which future servers and
clients can use to determine which protocol to use or is being used.
Also introduce the 'GIT_PROTOCOL' environment variable which will be
used to communicate a colon separated list of keys with optional values
to a server. Unknown keys and values must be tolerated. This mechanism
is used to communicate which version of the wire protocol a client would
like to use with a server.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
#ifndef PROTOCOL_H
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#define PROTOCOL_H
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enum protocol_version {
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protocol_unknown_version = -1,
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protocol_v0 = 0,
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protocol_v1 = 1,
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};
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/*
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* Used by a client to determine which protocol version to request be used when
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* communicating with a server, reflecting the configured value of the
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* 'protocol.version' config. If unconfigured, a value of 'protocol_v0' is
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* returned.
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*/
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extern enum protocol_version get_protocol_version_config(void);
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/*
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* Used by a server to determine which protocol version should be used based on
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* a client's request, communicated via the 'GIT_PROTOCOL' environment variable
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* by setting appropriate values for the key 'version'. If a client doesn't
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* request a particular protocol version, a default of 'protocol_v0' will be
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* used.
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*/
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extern enum protocol_version determine_protocol_version_server(void);
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/*
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* Used by a client to determine which protocol version the server is speaking
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* based on the server's initial response.
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*/
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extern enum protocol_version determine_protocol_version_client(const char *server_response);
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#endif /* PROTOCOL_H */
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