Artifact [5051fa3349]

Artifact 5051fa33496a5eaf6e6102b442391cb6f280d265eea3e9b1f228a083d5c6a88a:

• File internal/xfer/example_test.go — part of check-in [4082bffaa5] at 2026-04-26 15:00:28 on branch trunk — fix(xfer): always emit project code on push/pull cards (#12)

  The encoder emitted bare 'push\n' / 'pull\n' cards in code paths where the project code wasn't passed explicitly. The upstream Fossil C server's xfer parser requires at least the project code on push and both project + server codes on pull, rejecting 0-arg cards. This broke libfossil <-> fossil interop on the first sync round.

  Make the project code a required parameter on the encoder and update call sites to thread it through. The libfossil server-side decoder is tightened to match — it previously accepted 0-arg cards, which masked the encoder bug during Go-to-Go testing. (user: [email protected], size: 758) [annotate] [blame] [check-ins using]

package xfer_test

import (
	"fmt"

	"github.com/danmestas/libfossil/internal/xfer"
)

func ExampleMessage_Encode() {
	msg := &xfer.Message{
		Cards: []xfer.Card{
			&xfer.PushCard{ProjectCode: "abc123"},
			&xfer.PullCard{ProjectCode: "abc123", ServerCode: "def456"},
			&xfer.IGotCard{UUID: "aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d"},
		},
	}

	wire, err := msg.Encode()
	if err != nil {
		fmt.Println("error:", err)
		return
	}

	// Wire format is zlib-compressed xfer cards.
	fmt.Printf("compressed: %v\n", len(wire) > 0)

	// Decode round-trips back to a Message.
	decoded, err := xfer.Decode(wire)
	if err != nil {
		fmt.Println("error:", err)
		return
	}
	fmt.Printf("cards: %d\n", len(decoded.Cards))
	// Output:
	// compressed: true
	// cards: 3
}