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find open ports to open local relay

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This commit is contained in:
Zack Scholl 2020-09-21 06:02:13 -07:00
parent 78e4d5e179
commit 43d2ff0a09
1 changed files with 9 additions and 0 deletions
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9
src/croc/croc.go
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@ -13,6 +13,7 @@ import (
"os"
"path"
"path/filepath"
"strconv"
"strings"
"sync"
"time"
@ -264,6 +265,14 @@ func (c *Client) sendCollectFiles(options TransferOptions) (err error) {
func (c *Client) setupLocalRelay() {
// setup the relay locally
firstPort, _ := strconv.Atoi(c.Options.RelayPorts[0])
openPorts := utils.FindOpenPorts("localhost", firstPort, len(c.Options.RelayPorts))
if len(openPorts) < len(c.Options.RelayPorts) {
panic("not enough open ports to run local relay")
}
for i, port := range openPorts {
c.Options.RelayPorts[i] = fmt.Sprint(port)
}
for _, port := range c.Options.RelayPorts {
go func(portStr string) {
debugString := "warn"