Update prometheus/common (#1006)

This pulls in support for specifying proxy connect headers. Update
CONFIGURATION.md and example.yml to match.

Signed-off-by: Marcelo E. Magallon <[email protected]>

CONFIGURATION.md

@@ -114,6 +114,12 @@ The other placeholders are specified separately.
   # HTTP proxy server to use to connect to the targets.
   [ proxy_url: <string> ]
 
+  # Headers to pass to the HTTP proxy. If set, proxy_url must also be set.
+  [ proxy_connect_header:
+      <string>: <string> ...
+      ...
+  ]
+
   # Skip DNS resolution and URL change when an HTTP proxy (proxy_url) is set.
   [ skip_resolve_phase_with_proxy: <boolean> | default = false ]
 

example.yml

@@ -33,6 +33,13 @@ modules:
     http:
       proxy_url: "http://127.0.0.1:3128"
       skip_resolve_phase_with_proxy: true
+  http_with_proxy_and_headers:
+    prober: http
+    http:
+      proxy_url: "http://127.0.0.1:3128"
+      proxy_connect_header:
+        Proxy-Authorization:
+          - Bearer token
   http_post_2xx:
     prober: http
     timeout: 5s

go.mod

@@ -10,9 +10,9 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.14.0
 	github.com/prometheus/client_model v0.3.0
-	github.com/prometheus/common v0.37.0
+	github.com/prometheus/common v0.39.0
 	github.com/prometheus/exporter-toolkit v0.8.2
-	golang.org/x/net v0.2.0
+	golang.org/x/net v0.4.0
 	google.golang.org/grpc v1.51.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/yaml.v2 v2.4.0
@@ -27,15 +27,16 @@ require (
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect
 	golang.org/x/crypto v0.0.0-20221012134737-56aed061732a // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/oauth2 v0.0.0-20220909003341-f21342109be1 // indirect
+	golang.org/x/oauth2 v0.3.0 // indirect
 	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/sys v0.2.0 // indirect
-	golang.org/x/text v0.4.0 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/text v0.5.0 // indirect
 	golang.org/x/tools v0.1.12 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20200825200019-8632dd797987 // indirect