feat: new implementations

http/http.go

@@ -0,0 +1,97 @@
+package http
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/FloatTech/ttl"
+
+	"github.com/fumiama/terasu"
+	"github.com/fumiama/terasu/dns"
+)
+
+var (
+	ErrEmptyHostAddress = errors.New("empty host addr")
+)
+
+var DefaultDialer = net.Dialer{
+	Timeout: time.Minute,
+}
+
+var lookupTable = ttl.NewCache[string, []string](time.Hour)
+
+var DefaultClient = http.Client{
+	Transport: &http.Transport{
+		DialTLSContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+			if DefaultDialer.Timeout != 0 {
+				var cancel context.CancelFunc
+				ctx, cancel = context.WithTimeout(ctx, DefaultDialer.Timeout)
+				defer cancel()
+			}
+
+			if !DefaultDialer.Deadline.IsZero() {
+				var cancel context.CancelFunc
+				ctx, cancel = context.WithDeadline(ctx, DefaultDialer.Deadline)
+				defer cancel()
+			}
+
+			host, port, err := net.SplitHostPort(addr)
+			if err != nil {
+				return nil, err
+			}
+			addrs := lookupTable.Get(host)
+			if len(addrs) == 0 {
+				addrs, err = dns.DefaultResolver.LookupHost(ctx, host)
+				if err != nil {
+					addrs, err = net.DefaultResolver.LookupHost(ctx, host)
+					if err != nil {
+						return nil, err
+					}
+				}
+				lookupTable.Set(host, addrs)
+			}
+			if len(addr) == 0 {
+				return nil, ErrEmptyHostAddress
+			}
+			var tlsConn *tls.Conn
+			for _, a := range addrs {
+				conn, err := DefaultDialer.DialContext(ctx, network, net.JoinHostPort(a, port))
+				if err != nil {
+					continue
+				}
+				tlsConn = tls.Client(conn, &tls.Config{
+					ServerName: host,
+				})
+				err = terasu.Use(tlsConn).HandshakeContext(ctx, terasu.DefaultFirstFragmentLen)
+				if err == nil {
+					break
+				}
+				_ = tlsConn.Close()
+				tlsConn = nil
+			}
+			return tlsConn, err
+		},
+	},
+}
+
+func Get(url string) (resp *http.Response, err error) {
+	return DefaultClient.Get(url)
+}
+
+func Head(url string) (resp *http.Response, err error) {
+	return DefaultClient.Head(url)
+}
+
+func Post(url string, contentType string, body io.Reader) (resp *http.Response, err error) {
+	return DefaultClient.Post(url, contentType, body)
+}
+
+func PostForm(url string, data url.Values) (resp *http.Response, err error) {
+	return DefaultClient.PostForm(url, data)
+}