Enforce HTTP/3 control-stream and request-stream roles over QUIC

Use this document to resolve one bounded operational decision: Enforce HTTP/3 control-stream and request-stream roles over QUIC. Only the official source and traced locations below supply facts. Confirm applicability before acting.

Source fact:

The official RFC 9114 — HTTP/3 from RFC Editor / Internet Engineering Task Force supports the following bounded statements:

• Each HTTP/3 request occupies one client-initiated bidirectional stream, with interim and final responses returned on that same stream. The research record locates this support at Sections 4.1 (HTTP Message Framing) and 6.1 (Bidirectional Streams).
• Each endpoint creates exactly one control stream, sends SETTINGS first, and keeps that critical stream open for the connection’s lifetime. The research record locates this support at Section 6.2.1 (Control Streams).
• Only a server creates a push stream, whose stream-type prefix and unique Push ID associate its response frames with one promised push. The research record locates this support at Section 6.2.2 (Push Streams).

Only the traced statements above are asserted as source facts. Apply the review to clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points after confirming that the source and deployed context match.

What the source does not establish

This RFC evidence supports only the named web or transport decision; it does not prove browser, intermediary, library, or service compatibility. It does not establish a deployment’s current state, authorize a production change, prove compliance, or show that DNS, certificates, identity providers, time, content delivery, network paths, and application ownership are healthy. Documented options are review inputs, not universal mandates.

Applicability questions

• For source statement 1 at Sections 4.1 (HTTP Message Framing) and 6.1 (Bidirectional Streams), which observable configuration, record, or test can confirm applicability here?
• For source statement 2 at Section 6.2.1 (Control Streams), which observable configuration, record, or test can confirm applicability here?
• For source statement 3 at Section 6.2.2 (Push Streams), which observable configuration, record, or test can confirm applicability here?
• What inventory proves which parts of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points are in and out of scope?
• Which condition in DNS, certificates, identity providers, time, content delivery, network paths, and application ownership must be healthy before evidence is trustworthy?
• What result would disprove the working assumption and return the issue to the owner?

DSE recommendation:

DSE recommends using the cited source as the evidence anchor for this decision. Begin by recording scope and current state before deciding whether a change is warranted. Record the source location, examined part of clients, origin services, intermediaries, caches, proxies, gateways, protocol versions, and security-policy enforcement points, observed and expected states, owner, and reason for deviation.

For an approved change, define prerequisites, a limited test path, success and stop conditions, monitoring, and rollback. Check DNS, certificates, identity providers, time, content delivery, network paths, and application ownership in design order. Protect credentials, keys, recovery material, personal data, and sensitive topology in evidence.

Verification and evidence

Keep the source locations Sections 4.1 (HTTP Message Framing) and 6.1 (Bidirectional Streams); Section 6.2.1 (Control Streams); Section 6.2.2 (Push Streams) adjacent to the sanitized artifacts used for comparison. Prefer request and response captures, negotiated protocol details, headers, cache behavior, certificate state, and server or proxy logs, with enough identity and timing data for an independent recheck.

Preserve both successful and failed observations, along with approval and rollback evidence. Avoid uncontrolled production experiments. Assign an expiry or event-driven recheck so the conclusion is not treated as permanent.

Official references

• RFC 9114 — HTTP/3 — RFC Editor / Internet Engineering Task Force