[PATCH proxmox-backup 1/3] http client: use http proxy from client options if set

[Christian Ebner <c.ebner@proxmox.com>]

The client already supports reading the proxy config from the env
variables, now it is also possible to specify it as optional
parameter via the http client options.

For backwards compatibility always use the env variable proxy setting
over the http client option.

To be used for setting the http proxy on remotes for sync jobs.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 pbs-client/src/http_client.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pbs-client/src/http_client.rs b/pbs-client/src/http_client.rs
index 4730db8d1..43f9a3367 100644
--- a/pbs-client/src/http_client.rs
+++ b/pbs-client/src/http_client.rs
@@ -134,6 +134,7 @@ pub struct HttpClientOptions {
     fingerprint_cache: bool,
     verify_cert: bool,
     limit: RateLimitConfig,
+    proxy: Option<ProxyConfig>,
 }
 
 impl HttpClientOptions {
@@ -196,6 +197,11 @@ impl HttpClientOptions {
         self.limit = rate_limit;
         self
     }
+
+    pub fn proxy(mut self, proxy: Option<ProxyConfig>) -> Self {
+        self.proxy = proxy;
+        self
+    }
 }
 
 impl Default for HttpClientOptions {
@@ -209,6 +215,7 @@ impl Default for HttpClientOptions {
             fingerprint_cache: false,
             verify_cert: true,
             limit: RateLimitConfig::default(), // unlimited
+            proxy: None,
         }
     }
 }
@@ -479,6 +486,8 @@ impl HttpClient {
         }
 
         let proxy_config = ProxyConfig::from_proxy_env()?;
+        let proxy_config = proxy_config.or(options.proxy.clone());
+
         if let Some(config) = proxy_config {
             info!("Using proxy connection: {}:{}", config.host, config.port);
             https.set_proxy(config);
-- 
2.47.3