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Re: [RFC/WIP PATCH 09/11] transport: get_refs_via_connect exchanges capabilities before refs.

From
Jeff King <peff@peff.net>
Date
May 27, 2015, 07:06 UTC
Message-ID
<20150527070603.GH885@peff.net>
In-Reply-To
<1432677675-5118-10-git-send-email-sbeller@google.com>
On Tue, May 26, 2015 at 03:01:13PM -0700, Stefan Beller wrote:
Show 6 quoted lines
> +	switch (version) {
> +		default: /*
> +			  * Configured a protocol version > 2?
> +			  * Try version 2 as it's the most future proof.
> +			  */
> +			/* fall through */

Same comment here as earlier. If we do a v3, it might not be compatible with v2. Shouldn't we bail if the user asked for it?

Show 16 quoted lines
> +		case 2: /* first talk about capabilities, then get the heads */
> +			get_remote_capabilities(data->fd[0], NULL, 0);
> +			request_capabilities(data->fd[1]);
> +			get_remote_heads(data->fd[0], NULL, 0, &refs,
> +					 for_push ? REF_NORMAL : 0,
> +					 &data->extra_have,
> +					 &data->shallow);
> +			break;
> +		case 1: /* configured version 1, fall through */
> +		case 0: /* unconfigured, use first protocol */
> +			get_remote_heads(data->fd[0], NULL, 0, &refs,
> +					 for_push ? REF_NORMAL : 0,
> +					 &data->extra_have,
> +					 &data->shallow);
> +			break;
> +	}

I actually kind of wonder if we should just die("BUG") here on seeing "0". Is this low level the right place to do the "default to v1"? Because eventually we're going to want to default to v2, I would think (after a few years have passed, at least). It seems like we should be making that decision centrally when we init the transport options.

-Peff
Previous: Eric SunshineNext: Stefan Beller
Message 42 of 61 in “Protocol version 2, again!”
  1. 00/11 Protocol version 2, again!Stefan Beller, May 26, 2015
  2. 01/11 upload-pack: make client capability parsing code a separate functionStefan Beller, May 26, 2015
  3. 02/11 upload-pack: only accept capabilities on the first "want" lineStefan Beller, May 26, 2015
  4. Junio C HamanoMay 26, 2015
  5. Stefan BellerMay 26, 2015
  6. 03/11 upload-pack: move capabilities out of send_refStefan Beller, May 26, 2015
  7. 04/11 upload-pack-2: Implement the version 2 of upload-packStefan Beller, May 26, 2015
  8. Eric SunshineMay 27, 2015
  9. Jeff KingMay 27, 2015
  10. Eric SunshineMay 27, 2015
  11. Jeff KingMay 27, 2015
  12. Stefan BellerMay 27, 2015
  13. Jeff KingMay 27, 2015
  14. Stefan BellerMay 27, 2015
  15. Jeff KingMay 27, 2015
  16. 05/11 transport: add infrastructure to support a protocol version numberStefan Beller, May 26, 2015
  17. Jeff KingMay 27, 2015
  18. Stefan BellerMay 27, 2015
  19. Jeff KingMay 27, 2015
  20. Junio C HamanoMay 27, 2015
  21. 06/11 remote.h: add get_remote_capabilities, request_capabilitiesStefan Beller, May 26, 2015
  22. Eric SunshineMay 27, 2015
  23. Jeff KingMay 27, 2015
  24. Eric SunshineMay 27, 2015
  25. Jeff KingMay 27, 2015
  26. Jeff KingMay 27, 2015
  27. Stefan BellerMay 29, 2015
  28. Jeff KingMay 29, 2015
  29. 07/11 fetch-pack: use the configured transport protocolStefan Beller, May 26, 2015
  30. Junio C HamanoMay 26, 2015
  31. Stefan BellerMay 26, 2015
  32. Jeff KingMay 27, 2015
  33. 08/11 transport: connect_setup appends protocol version numberStefan Beller, May 26, 2015
  34. Junio C HamanoMay 26, 2015
  35. Stefan BellerMay 26, 2015
  36. Junio C HamanoMay 27, 2015
  37. Jeff KingMay 27, 2015
  38. Eric SunshineMay 27, 2015
  39. Jeff KingMay 27, 2015
  40. 09/11 transport: get_refs_via_connect exchanges capabilities before refs.Stefan Beller, May 26, 2015
  41. Eric SunshineMay 27, 2015
  42. Jeff KingMay 27, 2015
  43. 10/11 t5544: add a test case for the new protocolStefan Beller, May 26, 2015
  44. Eric SunshineMay 27, 2015
  45. Jeff KingMay 27, 2015
  46. 11/11 Document protocol version 2Stefan Beller, May 26, 2015
  47. Junio C HamanoMay 29, 2015
  48. Stefan BellerMay 29, 2015
  49. Junio C HamanoMay 29, 2015
  50. Jeff KingMay 29, 2015
  51. Stefan BellerJun 1, 2015
  52. Stefan BellerJun 1, 2015
  53. Jeff KingJun 4, 2015
  54. Junio C HamanoJun 4, 2015
  55. Junio C HamanoJun 2, 2015
  56. Jeff KingMay 27, 2015
  57. Jeff KingMay 27, 2015
  58. Stefan BellerJun 1, 2015
  59. Duy NguyenJun 2, 2015
  60. Jeff KingJun 4, 2015
  61. Stefan BellerJun 4, 2015

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