Artifact [a096a8c49a]

Artifact a096a8c49ad13a4050cfe1c7d9eac428063f60934546f35f9555b300deed3ab5:

• File repo_serve_http.go — part of check-in [9594cf3bae] at 2026-10-29 03:06:23 on branch main — perf(wasm): add a libfossil_nohttp build tag that leaves out net/http

  Under TinyGo, importing net/http at all links its TLS and X.509 code (crypto/x509, encoding/asn1, math/big's integers, AES-GCM, SHA-3, netip) whether or not a request is ever made: a five-line program that calls only http.StatusText grows by about 430 KB raw. The library imports it for its HTTP client transport and its HTTP server, which a program that serves sync through HandleSyncWithOpts and supplies its own transport never calls.

  Built with -tags libfossil_nohttp, the library leaves out NewHTTPTransport, WithHTTPClient, Repo.Pull, Repo.XferHandler and Repo.ServeHTTP, and the internal/sync client, server, redirect handling and peer-address trace they use. HandleSync, HandleSyncWithOpts, Sync over a host Transport and everything else are unchanged. Without the tag nothing changes. The retry classifier keeps the two statuses it read from net/http as constants, and DNS fault classification moves to its own file so it stays in the tagged build.

  For the html-artifact-publisher engine (TinyGo 0.43.0, Go 1.26.0) the tag takes the gzipped binary from 1,100,251 to 1,003,279 bytes. A test builds the library, db and simio with the tag for the host and js/wasm and checks none links net/http, net/http/httptrace or crypto/tls, and that the untagged library still does. (user: [email protected], size: 1326) [annotate] [blame] [check-ins using] [more...]

//go:build !libfossil_nohttp

package libfossil

// This file holds the net/http sync server. A build with the libfossil_nohttp tag
// leaves it out, and with it net/http, for a host that supplies its own
// transport (docs: Install, TinyGo).

import (
	"context"
	"net/http"

	internalsync "github.com/danmestas/go-libfossil/internal/sync"
)

// XferHandler returns an http.HandlerFunc that decodes Fossil xfer requests,
// dispatches to HandleSync, and encodes the response. Use this to compose
// a custom mux alongside operational endpoints (e.g., /healthz). It serves
// with default HandleOpts, so no HandleOpts.MaxStoredBytes budget applies.
func (r *Repo) XferHandler() http.HandlerFunc {
	h := internalsync.HandleSync
	return internalsync.XferHandler(r.inner, h)
}

// ServeHTTP starts an HTTP server that accepts Fossil xfer requests.
// Blocks until ctx is cancelled.
//
// Requests are authorized against the user table: one without a login card
// gets nobody's capabilities, which in a new repository allow clone and pull
// but not push. Grant more with SetCaps. Like XferHandler it serves with
// default HandleOpts, so no HandleOpts.MaxStoredBytes budget applies.
func (r *Repo) ServeHTTP(ctx context.Context, addr string) error {
	return internalsync.ServeHTTP(ctx, addr, r.inner, internalsync.HandleSync)
}