protocol.h

   1 #ifndef PROTOCOL_H
   2 #define PROTOCOL_H
   3
   4 /*
   5  * Intensive research over the course of many years has shown that
   6  * port 9418 is totally unused by anything else. Or
   7  *
   8  *      Your search - "port 9418" - did not match any documents.
   9  *
  10  * as www.google.com puts it.
  11  *
  12  * This port has been properly assigned for git use by IANA:
  13  * git (Assigned-9418) [I06-050728-0001].
  14  *
  15  *      git  9418/tcp   git pack transfer service
  16  *      git  9418/udp   git pack transfer service
  17  *
  18  * with Linus Torvalds <torvalds@osdl.org> as the point of
  19  * contact. September 2005.
  20  *
  21  * See https://www.iana.org/assignments/port-numbers
  22  */
  23 #define DEFAULT_GIT_PORT 9418
  24
  25 enum protocol_version {
  26         protocol_unknown_version = -1,
  27         protocol_v0 = 0,
  28         protocol_v1 = 1,
  29         protocol_v2 = 2,
  30 };
  31
  32 /*
  33  * Used by a client to determine which protocol version to request be used when
  34  * communicating with a server, reflecting the configured value of the
  35  * 'protocol.version' config.  If unconfigured, a value of 'protocol_v0' is
  36  * returned.
  37  */
  38 enum protocol_version get_protocol_version_config(void);
  39
  40 /*
  41  * Used by a server to determine which protocol version should be used based on
  42  * a client's request, communicated via the 'GIT_PROTOCOL' environment variable
  43  * by setting appropriate values for the key 'version'.  If a client doesn't
  44  * request a particular protocol version, a default of 'protocol_v0' will be
  45  * used.
  46  */
  47 enum protocol_version determine_protocol_version_server(void);
  48
  49 /*
  50  * Used by a client to determine which protocol version the server is speaking
  51  * based on the server's initial response.
  52  */
  53 enum protocol_version determine_protocol_version_client(const char *server_response);
  54
  55 #endif /* PROTOCOL_H */