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Commit e226127

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[skip changelog] Update client_example with proxy
1 parent d92816b commit e226127

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‎client_example/README.md‎

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# Client example
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This a client that simulates a gRPC consumer. We're using this for the time being to test the interaction with the gRPC
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interface, hopefully in the future we'll have proper integration tests.
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To use it run `arduino-cli daemon` and then `client_example`.
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To test the proxy settings first run:
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```
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docker run --name squid -d --restart=always \
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--publish 3128:3128 \
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--volume /path/to/squid.conf:/etc/squid/squid.conf \
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--volume /srv/docker/squid/cache:/var/spool/squid \
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sameersbn/squid:3.5.27-2
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```
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The `squid.conf` file to use is in this directory so change the volume path to that.
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To verify that requests are passing through the local proxy run:
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```
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docker exec -it squid tail -f /var/log/squid/access.log
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```
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If it works you should see logs similar to this:
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```
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1612176447.893 400234 172.17.0.1 TCP_TUNNEL/200 116430 CONNECT downloads.arduino.cc:443 - HIER_DIRECT/104.18.28.45 -
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1612176448.197 400245 172.17.0.1 TCP_TUNNEL/200 1621708 CONNECT downloads.arduino.cc:443 - HIER_DIRECT/104.18.28.45 -
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1612176448.946 400256 172.17.0.1 TCP_TUNNEL/200 354882 CONNECT downloads.arduino.cc:443 - HIER_DIRECT/104.18.28.45 -
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```

‎client_example/main.go‎

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@@ -90,6 +90,10 @@ func main() {
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log.Println("calling GetValue(foo)")
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callGetValue(settingsClient)
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// List all the settings.
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log.Println("calling GetAll()")
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callGetAll(settingsClient)
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// Write settings to file.
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log.Println("calling Write()")
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callWrite(settingsClient)
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log.Println("calling Init")
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instance := initInstance(client)
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// We set up the proxy and then run the update to verify that the proxy settings are currently used
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log.Println("calling setProxy")
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callSetProxy(settingsClient)
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// With a brand new instance, the first operation should always be updating
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// the index.
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log.Println("calling UpdateIndex")
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callUpdateIndex(client, instance)
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// And we run update again
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log.Println("calling UpdateIndex")
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callUpdateIndex(client, instance)
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// Let's search for a platform (also known as 'core') called 'samd'.
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log.Println("calling PlatformSearch(samd)")
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callPlatformSearch(client, instance)
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JsonData: `{"data": "` + dataDir + `", "downloads": "` + path.Join(dataDir, "staging") + `", "user": "` + path.Join(dataDir, "sketchbook") + `"}`,
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})
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if err != nil {
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log.Fatalf("Error setting settings value: %s", err)
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}
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}
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func callSetProxy(client settings.SettingsClient) {
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_, err := client.SetValue(context.Background(),
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&settings.Value{
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Key: "network.proxy",
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JsonData: `"http://localhost:3128"`,
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})
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if err != nil {
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log.Fatalf("Error setting settings value: %s", err)
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}
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}
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func callUnsetProxy(client settings.SettingsClient) {
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_, err := client.SetValue(context.Background(),
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&settings.Value{
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Key: "network.proxy",
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JsonData: `""`,
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})
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if err != nil {
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log.Fatalf("Error setting settings value: %s", err)
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}

‎client_example/squid.conf‎

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http_port 3128
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acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
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acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
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acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
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acl localnet src fc00::/7 # RFC 4193 local private network range
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acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
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acl SSL_ports port 443
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acl Safe_ports port 80 # http
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acl Safe_ports port 21 # ftp
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acl Safe_ports port 443 # https
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acl Safe_ports port 70 # gopher
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acl Safe_ports port 210 # wais
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acl Safe_ports port 280 # http-mgmt
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acl Safe_ports port 488 # gss-http
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acl Safe_ports port 591 # filemaker
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acl Safe_ports port 777 # multiling http
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acl Safe_ports port 1025-65535 # unregistered ports
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acl CONNECT method CONNECT
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http_access deny !Safe_ports
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http_access deny CONNECT !SSL_ports
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http_access allow localhost manager
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http_access deny manager
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#
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# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
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#
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http_access allow localnet
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http_access allow localhost
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http_access allow all
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coredump_dir /squid/var/cache/squid
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refresh_pattern ^ftp: 1440 20% 10080
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refresh_pattern ^gopher: 1440 0% 1440
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refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
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refresh_pattern . 0 20% 4320

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