dev day #79

pkg/httpclient/client.go

@@ -0,0 +1,76 @@
+package httpclient
+
+import (
+	"crypto/tls"
+	"net"
+	"net/http"
+	"time"
+)
+
+// DefaultClient returns a production-ready HTTP client with reasonable timeouts
+// and connection pooling to prevent resource exhaustion
+func DefaultClient() *http.Client {
+	return &http.Client{
+		Timeout: 30 * time.Second,
+		Transport: &http.Transport{
+			// Connection pool settings
+			MaxIdleConns:        100,
+			MaxIdleConnsPerHost: 10,
+			MaxConnsPerHost:     50,
+			IdleConnTimeout:     90 * time.Second,
+			
+			// Timeouts
+			DialContext: (&net.Dialer{
+				Timeout:   10 * time.Second,
+				KeepAlive: 30 * time.Second,
+			}).DialContext,
+			TLSHandshakeTimeout:   10 * time.Second,
+			ResponseHeaderTimeout: 15 * time.Second,
+			ExpectContinueTimeout: 1 * time.Second,
+			
+			// HTTP/2 support
+			ForceAttemptHTTP2: true,
+			
+			// TLS settings
+			TLSClientConfig: &tls.Config{
+				MinVersion: tls.VersionTLS12,
+			},
+		},
+	}
+}
+
+// FastClient returns a client optimized for fast internal API calls
+func FastClient() *http.Client {
+	return &http.Client{
+		Timeout: 5 * time.Second,
+		Transport: &http.Transport{
+			MaxIdleConns:        50,
+			MaxIdleConnsPerHost: 10,
+			IdleConnTimeout:     30 * time.Second,
+			DialContext: (&net.Dialer{
+				Timeout:   2 * time.Second,
+				KeepAlive: 15 * time.Second,
+			}).DialContext,
+			TLSHandshakeTimeout:   3 * time.Second,
+			ResponseHeaderTimeout: 4 * time.Second,
+		},
+	}
+}
+
+// SlowClient returns a client for potentially slow external APIs (e.g., AI, analytics)
+func SlowClient() *http.Client {
+	return &http.Client{
+		Timeout: 60 * time.Second,
+		Transport: &http.Transport{
+			MaxIdleConns:        20,
+			MaxIdleConnsPerHost: 5,
+			IdleConnTimeout:     120 * time.Second,
+			DialContext: (&net.Dialer{
+				Timeout:   15 * time.Second,
+				KeepAlive: 60 * time.Second,
+			}).DialContext,
+			TLSHandshakeTimeout:   15 * time.Second,
+			ResponseHeaderTimeout: 30 * time.Second,
+		},
+	}
+}