Allow Request.Context to be nil

client.go

@@ -2,6 +2,7 @@ package gemini
 
 import (
 	"bufio"
+	"context"
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
@@ -96,7 +97,12 @@ func (c *Client) do(req *Request, via []*Request) (*Response, error) {
 		},
 		ServerName: hostname,
 	}
-	netConn, err := (&net.Dialer{}).DialContext(req.Context, "tcp", req.Host)
+
+	ctx := req.Context
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	netConn, err := (&net.Dialer{}).DialContext(ctx, "tcp", req.Host)
 	if err != nil {
 		return nil, err
 	}

request.go

@@ -36,7 +36,7 @@ type Request struct {
 	TLS tls.ConnectionState
 
 	// Context specifies the context to use for client requests.
-	// Context must not be nil.
+	// If Context is nil, the background context will be used.
 	Context context.Context
 }
 
@@ -60,9 +60,8 @@ func NewRequestFromURL(url *url.URL) *Request {
 		host += ":1965"
 	}
 	return &Request{
-		URL:     url,
+		URL:  url,
-		Host:    host,
+		Host: host,
-		Context: context.Background(),
 	}
 }