33 lines
855 B
Go
33 lines
855 B
Go
package xmpp
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import (
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"strconv"
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"strings"
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)
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// ensurePort adds a port to an address if none are provided.
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// It handles both IPV4 and IPV6 addresses.
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func ensurePort(addr string, port int) string {
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// This is an IPV6 address literal
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if strings.HasPrefix(addr, "[") {
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// if address has no port (behind his ipv6 address) - add default port
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if strings.LastIndex(addr, ":") <= strings.LastIndex(addr, "]") {
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return addr + ":" + strconv.Itoa(port)
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}
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return addr
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}
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// This is either an IPV6 address without bracket or an IPV4 address
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switch strings.Count(addr, ":") {
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case 0:
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// This is IPV4 without port
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return addr + ":" + strconv.Itoa(port)
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case 1:
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// This is IPV6 with port
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return addr
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default:
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// This is IPV6 without port, as you need to use bracket with port in IPV6
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return "[" + addr + "]:" + strconv.Itoa(port)
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}
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}
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