diff --git a/Sources/libwebsockets/WebsocketClient.swift b/Sources/libwebsockets/WebsocketClient.swift
index 72664f8..b6d6e74 100644
--- a/Sources/libwebsockets/WebsocketClient.swift
+++ b/Sources/libwebsockets/WebsocketClient.swift
@@ -366,7 +366,12 @@ public class WebsocketClient: WebsocketConnection {
         // TODO: Use query and all other params?
 //        lwsCCInfo.host = lws_canonical_hostname(context)
         let lwsCCInfoHostHeader = "\(host):\(port)".utf8CString
-        lwsCCInfo.host = lwsCCInfoHostHeader.toCPointer()
+        let lwsCCInfoCustomHostHeader = headers[caseInsensitive: "host"]?.utf8CString ?? headers[caseInsensitive: "host:"]?.utf8CString
+        if let lwsCCInfoCustomHostHeader {
+            lwsCCInfo.host = lwsCCInfoCustomHostHeader.toCPointer()
+        } else {
+            lwsCCInfo.host = lwsCCInfoHostHeader.toCPointer()
+        }
         let lwsCCInfoOrigin = origin.utf8CString
         lwsCCInfo.origin = lwsCCInfoOrigin.toCPointer()
         lwsCCInfo.protocol = websocketClientContext.lwsProtocols.name
@@ -398,6 +403,7 @@ public class WebsocketClient: WebsocketConnection {
             // Make sure the below variables are retained until function end
             _ = lwsCCInfoHost.count
             _ = lwsCCInfoHostHeader.count
+            _ = lwsCCInfoCustomHostHeader?.count
             _ = lwsCCInfoPath.count
             _ = lwsCCInfoOrigin.count
         }
@@ -974,6 +980,12 @@ internal func _lws_swift_websocketClientCallback(
         let end = p.pointee?.advanced(by: len)
 
         for header in websocketClient.headers {
+            let lowercaseHeaderKey = header.key.lowercased()
+            if lowercaseHeaderKey == "host" || lowercaseHeaderKey == "host:" {
+                // Host was set already in client connect info
+                continue
+            }
+
             let keyString = header.key.utf8CString
             let valueString = header.value.utf8CString
             guard lws_add_http_header_by_name(
diff --git a/Sources/libwebsockets/WebsocketTools.swift b/Sources/libwebsockets/WebsocketTools.swift
index 0f5596b..f6031e1 100644
--- a/Sources/libwebsockets/WebsocketTools.swift
+++ b/Sources/libwebsockets/WebsocketTools.swift
@@ -25,3 +25,21 @@ internal extension Data {
         }
     }
 }
+
+internal extension Dictionary where Key == String {
+    subscript(caseInsensitive key: Key) -> Value? {
+        get {
+            if let k = keys.first(where: { $0.caseInsensitiveCompare(key) == .orderedSame }) {
+                return self[k]
+            }
+            return nil
+        }
+        set {
+            if let k = keys.first(where: { $0.caseInsensitiveCompare(key) == .orderedSame }) {
+                self[k] = newValue
+            } else {
+                self[key] = newValue
+            }
+        }
+    }
+}