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Port zero no longer accepted in URLs #8090

bagder opened this issue Dec 3, 2021 · 0 comments

Port zero no longer accepted in URLs #8090

bagder opened this issue Dec 3, 2021 · 0 comments


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bagder commented Dec 3, 2021

I did this

curl http://localhost:0
curl: (3) URL using bad/illegal format or missing URL

(via @bradfitz at

I expected the following

$ curl http://localhost:0
curl: (7) Failed to connect to localhost port 0 after 0 ms: Connection refused

This worked before 7.62.0. I even blogged about using port zero a while ago.

curl/libcurl version

7.80.0 and current git

operating system


@bagder bagder self-assigned this Dec 3, 2021
bagder added a commit that referenced this issue Dec 3, 2021
This is a regression since 7.62.0 (fb30ac5).

Updated test 1560 accordingly

Reported-by: Brad Fitzpatrick
Fixes #8090
@bagder bagder closed this as completed in 92d1aee Dec 3, 2021
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