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https://github.com/gotenberg/gotenberg.git
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32 lines
603 B
Go
32 lines
603 B
Go
package api
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import (
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"fmt"
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"net"
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"strconv"
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"go.uber.org/zap"
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)
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func freePort(logger *zap.Logger) (int, error) {
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netListener, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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return 0, fmt.Errorf("listen on the local network address: %w", err)
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}
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defer func() {
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err := netListener.Close()
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if err != nil {
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logger.Error(fmt.Sprintf("close network listener: %s", err.Error()))
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}
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}()
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addr := netListener.Addr().String()
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_, portStr, err := net.SplitHostPort(addr)
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if err != nil {
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return 0, fmt.Errorf("get free port from host: %w", err)
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}
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return strconv.Atoi(portStr)
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}
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