jcp-gateway: the stdio tests' awk server answers on any awk #234

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dcharlot merged 1 commit from fix/gateway-test-server-any-awk into main 2026-10-13 09:31:15 -04:00

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dcharlot commented 2026-10-13 02:30:39 -04:00

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Why

jcp-gateway's tests/stdio_binary.rs drives the real gateway binary in front of an awk MCP server. The tests passed in CI's Linux image and on macOS.

On a host whose awk is mawk, the default on Debian and Ubuntu, both tests failed at their 120 s deadline. mawk buffers piped input in blocks, so the server never saw the initialize request until the pipe closed, and the gateway, correctly, waited for its reply. This was found running the jcp-rs leg directly on jetson-hub's host, where /usr/bin/awk is mawk 1.3.4.

What

A test-only change. A small awk_server(script) asks the awk what it is (awk -W version):

• mawk runs with -W interactive, which reads the pipe a line at a time;
• other awks read lines as they come and reject or ignore that option, so they are left as they are.

Both tests build their server command through it.

Evidence

Host	awk	Before	After
jetson-hub host	mawk 1.3.4	2 failed at 120 s	2 passed in 1.85 s
M3 Ultra	macOS awk	2 passed	2 passed in 1.56 s
CI Linux image	the image's awk	passed	unchanged

🤖 Generated with Claude Code

## Why `jcp-gateway`'s `tests/stdio_binary.rs` drives the real gateway binary in front of an awk MCP server. The tests passed in CI's Linux image and on macOS. On a host whose awk is **mawk**, the default on Debian and Ubuntu, both tests failed at their 120 s deadline. mawk buffers piped input in blocks, so the server never saw the `initialize` request until the pipe closed, and the gateway, correctly, waited for its reply. This was found running the jcp-rs leg directly on jetson-hub's host, where `/usr/bin/awk` is mawk 1.3.4. ## What A test-only change. A small `awk_server(script)` asks the awk what it is (`awk -W version`): - **mawk** runs with `-W interactive`, which reads the pipe a line at a time; - **other awks** read lines as they come and reject or ignore that option, so they are left as they are. Both tests build their server command through it. ## Evidence | Host | awk | Before | After | |---|---|---|---| | jetson-hub host | mawk 1.3.4 | 2 failed at 120 s | 2 passed in 1.85 s | | M3 Ultra | macOS awk | 2 passed | 2 passed in 1.56 s | | CI Linux image | the image's awk | passed | unchanged | 🤖 Generated with [Claude Code](https://claude.com/claude-code)

dcharlot added 1 commit 2026-10-13 02:30:54 -04:00

jcp-gateway: the stdio tests' awk server answers on any awk ... 4e9aa8b58b

The two tests that drive the gateway binary in front of an awk server
passed in CI's Linux image and on macOS, but on a host whose awk is mawk
(Debian's and Ubuntu's default) both failed at their 120 s deadline: mawk
buffers piped input in blocks, so the server never saw the initialize
request until the pipe closed, and the gateway, correctly, waited for its
reply. The test asks the awk what it is and runs mawk with `-W
interactive`, which reads the pipe a line at a time; other awks, which
reject or ignore that option, are left as they are.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

dcharlot merged commit 30dfbc45df into main 2026-10-13 09:31:15 -04:00

dcharlot referenced this pull request from a commit 2026-10-13 09:31:17 -04:00

Merge pull request 'jcp-gateway: the stdio tests' awk server answers on any awk' (#234) from fix/gateway-test-server-any-awk into main

dcharlot referenced this pull request from a commit 2026-10-13 22:40:05 -04:00

Merge origin/main (at 1ec8f447, with #233, #234, #236, #238, #239, #240) into wai/d2c-decoders-on-ops

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Transaction-Science/open-standards!234

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