CodeSampleX

Sample

github.com/caddyserver/caddy/v2 v2.11.4: caddy.ParseNetworkAddress requires single-slash network prefixes and leading colons for port-only addresses, parsing bare numbers as hostnames with port 0.

Verified sample for golang github.com/caddyserver/caddy/v2 v2.11.4: caddy.ParseNetworkAddress requires single-slash network prefixes and leading colons for…

sha256:26d7a22ad0a41327766bd4c63ce797d8491e71f27b23e43ff0a0e8d96ea56bdf

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
2
Signing keys that built it
1
Declared environment go linux x64 go go go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-18
go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 FAIL compile:SKIPPED · contract:FAIL · load:SKIPPED · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-18

Case

HOW
Goal
caddy.ParseNetworkAddress requires single-slash network prefixes and leading colons for port-only addresses, parsing bare numbers as hostnames with port 0.
Packages
Symbols
  • caddy.ParseNetworkAddress
Environment
go
Created
2026-08-18T01:22:37Z

Contract

  1. caddy.ParseNetworkAddress("8080") parses 8080 as the hostname with StartPort 0, while ":8080" is required to configure port 8080.
  2. caddy.ParseNetworkAddress("tcp://localhost:2019") splits on the first slash and sets Network to "tcp:" with a trailing colon and Host to "/localhost".
  3. caddy.ParseNetworkAddress("unix/data/socket.sock") sets Network to "unix" and Host to "data/socket.sock" with IsUnixNetwork true and StartPort 0.
  4. caddy.ParseNetworkAddress("localhost:8080-8085") parses a contiguous port range where StartPort is 8080, EndPort is 8085, and PortRangeSize is 6.
  5. caddy.ParseNetworkAddress("localhost:8085-8080") fails with "end port must not be less than start port".
  6. caddy.ParseNetworkAddress("localhost:99999") fails with a port value out of range error.
  7. caddy.ParseNetworkAddressWithDefaults("localhost", "tcp", 2019) applies the default port to return host "localhost" with StartPort 2019.

Files

  • NOTES.md
  • csx.json
  • go.mod
  • go.sum
  • network_address_test.go

Download the source artifact (tar.gz)

Origin Seeder

csx-seed