go-gemini/request.go
2020-10-27 19:22:34 -04:00

73 lines
1.7 KiB
Go

package gemini
import (
"bufio"
"crypto/tls"
"net"
"net/url"
)
// Request represents a Gemini request.
type Request struct {
// URL specifies the URL being requested.
URL *url.URL
// For client requests, Host specifies the host on which the URL is sought.
// Host must contain a port.
// This field is ignored by the server.
Host string
// Certificate specifies the TLS certificate to use for the request.
// Request certificates take precedence over client certificates.
// This field is ignored by the server.
Certificate *tls.Certificate
// RemoteAddr allows servers and other software to record the network
// address that sent the request.
// This field is ignored by the client.
RemoteAddr net.Addr
// TLS allows servers and other software to record information about the TLS
// connection on which the request was received.
// This field is ignored by the client.
TLS tls.ConnectionState
}
// NewRequest returns a new request. The host is inferred from the URL.
func NewRequest(rawurl string) (*Request, error) {
u, err := url.Parse(rawurl)
if err != nil {
return nil, err
}
return NewRequestFromURL(u)
}
// NewRequestFromURL returns a new request for the given URL.
// The host is inferred from the URL.
func NewRequestFromURL(url *url.URL) (*Request, error) {
host := url.Host
if url.Port() == "" {
host += ":1965"
}
return &Request{
URL: url,
Host: host,
}, nil
}
// write writes the Gemini request to the provided buffered writer.
func (r *Request) write(w *bufio.Writer) error {
url := r.URL.String()
// User is invalid
if r.URL.User != nil || len(url) > 1024 {
return ErrInvalidURL
}
if _, err := w.WriteString(url); err != nil {
return err
}
if _, err := w.Write(crlf); err != nil {
return err
}
return nil
}