diff options
Diffstat (limited to 'Documentation/technical/pack-protocol.txt')
| -rw-r--r-- | Documentation/technical/pack-protocol.txt | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt index 6ac774d5f6..a4573d12ce 100644 --- a/Documentation/technical/pack-protocol.txt +++ b/Documentation/technical/pack-protocol.txt @@ -22,6 +22,16 @@ protocol-common.txt. When the grammar indicate `PKT-LINE(...)`, unless otherwise noted the usual pkt-line LF rules apply: the sender SHOULD include a LF, but the receiver MUST NOT complain if it is not present. +An error packet is a special pkt-line that contains an error string. + +---- + error-line = PKT-LINE("ERR" SP explanation-text) +---- + +Throughout the protocol, where `PKT-LINE(...)` is expected, an error packet MAY +be sent. Once this packet is sent by a client or a server, the data transfer +process defined in this protocol is terminated. + Transports ---------- There are three transports over which the packfile protocol is @@ -86,16 +96,9 @@ Basically what the Git client is doing to connect to an 'upload-pack' process on the server side over the Git protocol is this: $ echo -e -n \ - "0039git-upload-pack /schacon/gitbook.git\0host=example.com\0" | + "003agit-upload-pack /schacon/gitbook.git\0host=example.com\0" | nc -v example.com 9418 -If the server refuses the request for some reasons, it could abort -gracefully with an error message. - ----- - error-line = PKT-LINE("ERR" SP explanation-text) ----- - SSH Transport ------------- @@ -168,9 +171,9 @@ with a version number (if "version=1" is sent as an Extra Parameter), and a listing of each reference it has (all branches and tags) along with the object name that each reference currently points to. - $ echo -e -n "0044git-upload-pack /schacon/gitbook.git\0host=example.com\0\0version=1\0" | + $ echo -e -n "0045git-upload-pack /schacon/gitbook.git\0host=example.com\0\0version=1\0" | nc -v example.com 9418 - 000aversion 1 + 000eversion 1 00887217a7c7e582c46cec22a130adf4b9d7d950fba0 HEAD\0multi_ack thin-pack side-band side-band-64k ofs-delta shallow no-progress include-tag 00441d3fcd5ced445d1abc402225c0b8a1299641f497 refs/heads/integration @@ -398,12 +401,11 @@ from the client). Then the server will start sending its packfile data. ---- - server-response = *ack_multi ack / nak / error-line + server-response = *ack_multi ack / nak ack_multi = PKT-LINE("ACK" SP obj-id ack_status) ack_status = "continue" / "common" / "ready" ack = PKT-LINE("ACK" SP obj-id) nak = PKT-LINE("NAK") - error-line = PKT-LINE("ERR" SP explanation-text) ---- A simple clone may look like this (with no 'have' lines): @@ -642,7 +644,7 @@ update was successful, or 'ng [refname] [error]' if the update was not. command-ok = PKT-LINE("ok" SP refname) command-fail = PKT-LINE("ng" SP refname SP error-msg) - error-msg = 1*(OCTECT) ; where not "ok" + error-msg = 1*(OCTET) ; where not "ok" ---- Updates can be unsuccessful for a number of reasons. The reference can have @@ -655,14 +657,14 @@ can be rejected. An example client/server communication might look like this: ---- - S: 007c74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/local\0report-status delete-refs ofs-delta\n + S: 006274730d410fcb6603ace96f1dc55ea6196122532d refs/heads/local\0report-status delete-refs ofs-delta\n S: 003e7d1665144a3a975c05f1f43902ddaf084e784dbe refs/heads/debug\n S: 003f74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/master\n - S: 003f74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/team\n + S: 003d74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/team\n S: 0000 - C: 003e7d1665144a3a975c05f1f43902ddaf084e784dbe 74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/debug\n - C: 003e74730d410fcb6603ace96f1dc55ea6196122532d 5a3f6be755bbb7deae50065988cbfa1ffa9ab68a refs/heads/master\n + C: 00677d1665144a3a975c05f1f43902ddaf084e784dbe 74730d410fcb6603ace96f1dc55ea6196122532d refs/heads/debug\n + C: 006874730d410fcb6603ace96f1dc55ea6196122532d 5a3f6be755bbb7deae50065988cbfa1ffa9ab68a refs/heads/master\n C: 0000 C: [PACKDATA] |