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Adds response status code filter #54

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Adds response status code filter #54

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8 changes: 8 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,14 @@ Sometimes you don't care about checking HTTP if HTTPS is working. You can do tha
▶ cat domains.txt | httprobe --prefer-https
```

## Filter Status Code

Show only results with given response status code. You can do that with the `--status-codes` flag:

```
▶ cat domains.txt | httprobe --status-codes 200,301
```

## Docker

Build the docker container:
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13 changes: 9 additions & 4 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import (
"net/http"
"os"
"strings"
"strconv"
"sync"
"time"
)
Expand Down Expand Up @@ -52,6 +53,10 @@ func main() {
var method string
flag.StringVar(&method, "method", "GET", "HTTP method to use")

// Filter status code
var statusCodes string
flag.StringVar(&statusCodes, "status-codes", "", "Status codes to display.")

flag.Parse()

// make an actual time.Duration out of the timeout
Expand Down Expand Up @@ -96,7 +101,7 @@ func main() {

// always try HTTPS first
withProto := "https://" + url
if isListening(client, withProto, method) {
if isListening(client, withProto, method, statusCodes) {
output <- withProto

// skip trying HTTP if --prefer-https is set
Expand All @@ -120,7 +125,7 @@ func main() {
go func() {
for url := range httpURLs {
withProto := "http://" + url
if isListening(client, withProto, method) {
if isListening(client, withProto, method, statusCodes) {
output <- withProto
continue
}
Expand Down Expand Up @@ -210,7 +215,7 @@ func main() {
outputWG.Wait()
}

func isListening(client *http.Client, url, method string) bool {
func isListening(client *http.Client, url, method string, statusCodes string) bool {

req, err := http.NewRequest(method, url, nil)
if err != nil {
Expand All @@ -226,7 +231,7 @@ func isListening(client *http.Client, url, method string) bool {
resp.Body.Close()
}

if err != nil {
if err != nil || !strings.Contains(statusCodes, strconv.Itoa(resp.StatusCode)) && statusCodes != "" {
return false
}

Expand Down