proxy support

[valsha]

import (
    "context"
    "net"
    "net/http"
    "time"
)

func main() {
    // create a SOCKS5 proxy dialer
    dialer, err := proxy.SOCKS5("tcp", "localhost:1080", nil, proxy.Direct)
    if err != nil {
        // handle error
    }

    // create a transport that uses the SOCKS5 proxy dialer
    transport := &http.Transport{
        DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
            return dialer.Dial(network, addr)
        },
    }

    // create an http.Client that uses the custom transport
    httpClient := &http.Client{
        Timeout:   10 * time.Second,
        Transport: transport,
    }

    // use the httpClient to make requests
    resp, err := httpClient.Get("https://example.com")
    if err != nil {
        // handle error
    }
    defer resp.Body.Close()

    // read the response body
    // ...
}