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The Wire · Showcase

HTTP/2 WRAPS NET/HTTP AS GO STABILIZES TEST SUITE

By RepoJournal · Filed · About Go

golang/net shipped wrapped HTTP/2 Server and ClientConn implementations while the core runtime quietly fixed a cascade of platform-specific test failures.

The http2 package is undergoing a structural shift, moving Server [1] and ClientConn [2] implementations to wrap net/http directly instead of standing alone—part of a larger consolidation effort. A critical fix landed for 32-bit platforms where http2wrap was overflowing integer math [3], unblocking builds on ARM and other narrow architectures. Meanwhile, golang/go is tightening its test harness: CgoCallback tests disabled on FreeBSD+race [8] where the configuration isn't supported, flaky HTTP/3 tests muted [4], and VCS import tests scrubbed of unwanted network calls [5]. A subtle but important fix in js/wasm syscall now copies only the bytes actually read instead of the full buffer [6], cutting waste on small file operations. Generic method experiments now correctly read GOEXPERIMENT from the build environment [7] instead of the compiler's internal setting, fixing a long-standing inconsistency. Over on pkgsite, the symbols API is being refactored to reduce duplication in its output format [9].

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Action items

References

  1. [1] http2: add wrapped Server
  2. [2] http2: add wrapped ClientConn
  3. [3] http2: avoid overflowing 32-bit int when http2wrap enabled
  4. [4] net/http: disable some flaky HTTP/3 tests
  5. [5] cmd/go/internal/vcs: stop making network connections in test
  6. [6] syscall: copy only read bytes in js/wasm
  7. [7] cmd/compile: use GOEXPERIMENT from environment for generic methods
  8. [8] runtime: disable CgoCallbackX15 test on freebsd+race
  9. [9] internal/api: adjust symbols output format

Quick answers

What shipped in Go on May 1, 2026?
golang/net shipped wrapped HTTP/2 Server and ClientConn implementations while the core runtime quietly fixed a cascade of platform-specific test failures. In total, 12 commits landed.

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