Allow configuration of ACME provider http timeout

docs/content/https/acme.md

@@ -835,6 +835,71 @@ certificatesResolvers:
 # ...
 ```
 
+### `clientTimeout`
+
+_Optional, Default=2m_
+
+`clientTimeout` is the total timeout for a complete HTTP transaction (including TCP connection, sending request and receiving response) with the ACME server.
+It defaults to 2 minutes.
+
+!!! warning "This timeout encompasses the entire request-response cycle, including the response headers timeout. It must be at least `clientResponseHeaderTimeout`, otherwise the certificate resolver will fail to start."
+
+```yaml tab="File (YAML)"
+certificatesResolvers:
+  myresolver:
+    acme:
+      # ...
+      clientTimeout: 1m
+      # ...
+```
+
+```toml tab="File (TOML)"
+[certificatesResolvers.myresolver.acme]
+  # ...
+  clientTimeout=1m
+  # ...
+```
+
+```bash tab="CLI"
+# ...
+--certificatesresolvers.myresolver.acme.clientTimeout=1m
+# ...
+```
+
+!!! warning
+    This should not be confused with any timeouts used for validating challenges.
+
+### `clientResponseHeaderTimeout`
+
+_Optional, Default=30s_
+
+`clientResponseHeaderTimeout` defines how long the HTTP client waits for response headers when communicating with the `caServer`.
+It defaults to 30 seconds. 
+
+!!! warning "It must be lower than `clientTimeout`, otherwise the certificate resolver will fail to start."
+
+```yaml tab="File (YAML)"
+certificatesResolvers:
+  myresolver:
+    acme:
+      # ...
+      clientResponseHeaderTimeout: 1m
+      # ...
+```
+
+```toml tab="File (TOML)"
+[certificatesResolvers.myresolver.acme]
+  # ...
+  clientResponseHeaderTimeout=1m
+  # ...
+```
+
+```bash tab="CLI"
+# ...
+--certificatesresolvers.myresolver.acme.clientResponseHeaderTimeout=1m
+# ...
+```
+
 ### `preferredChain`
 
 _Optional, Default=""_

docs/content/https/ref-acme.toml

@@ -30,6 +30,20 @@
   #
   # certificatesDuration=2160
 
+  # Timeout for a complete HTTP transaction with the ACME server.
+  #
+  # Optional
+  # Default: 2m
+  #
+  # clientTimeout="2m"
+
+  # Timeout for receiving the response headers when communicating with the ACME server.
+  #
+  # Optional
+  # Default: 30s
+  #
+  # clientResponseHeaderTimeout="30s"
+
   # Preferred chain to use.
   #
   # If the CA offers multiple certificate chains, prefer the chain with an issuer matching this Subject Common Name.

docs/content/https/ref-acme.txt

@@ -29,6 +29,20 @@
 #
 --certificatesresolvers.myresolver.acme.certificatesDuration=2160
 
+# Timeout for a complete HTTP transaction with the ACME server.
+#
+# Optional
+# Default: 2m
+#
+--certificatesresolvers.myresolver.acme.clientTimeout=2m
+
+# Timeout for receiving the response headers when communicating with the ACME server.
+#
+# Optional
+# Default: 30s
+#
+--certificatesresolvers.myresolver.acme.clientResponseHeaderTimeout=30s
+
 # Preferred chain to use.
 #
 # If the CA offers multiple certificate chains, prefer the chain with an issuer matching this Subject Common Name.

docs/content/https/ref-acme.yaml

@@ -32,6 +32,20 @@ certificatesResolvers:
       #
       # certificatesDuration: 2160
 
+      # Timeout for a complete HTTP transaction with the ACME server.
+      #
+      # Optional
+      # Default: 2m
+      #
+      # clientTimeout: "2m"
+
+      # Timeout for receiving the response headers when communicating with the ACME server.
+      #
+      # Optional
+      # Default: 30s
+      #
+      # clientResponseHeaderTimeout: "30s"
+
       # Preferred chain to use.
       #
       # If the CA offers multiple certificate chains, prefer the chain with an issuer matching this Subject Common Name.