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Fix locally hosted skin servers hosted on http sometimes dropping connections - #104

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Sollace merged 2 commits into
1.26.3from
fix/http2-upgrade
Nov 6, 2026
Merged

Sollace merged 2 commits into
1.26.3from
fix/http2-upgrade

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@mattmess1221

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This happens because the java http client defaults to http/2 and sends Upgrade: h2c for plaintext connections, which is deprecated and not understood by some servers. Setting the version to 1.1 for http urls should fix this.

This is based on the pull request open-telemetry/opentelemetry-java#8985.

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This happens because the java http client defaults to http/2 and sends `Upgrade: h2c` for plaintext connections, which is deprecated and not understood by some servers. Setting the version to 1.1 for http urls should fix this.

This is based on the pull request open-telemetry/opentelemetry-java#8985.
@Sollace
Sollace merged commit 57ba96b into 1.26.3 Nov 6, 2026
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