feat(proxy): add proxy module

proxy/fixed_provider.go

@@ -0,0 +1,42 @@
+package proxy
+
+import "strings"
+
+// FixedIPProvider 固定IP列表提供者
+type FixedIPProvider struct {
+	ips []ProxyIP
+}
+
+// NewFixedIPProvider 创建固定IP列表提供者
+func NewFixedIPProvider(proxyURLs []string) *FixedIPProvider {
+	ips := make([]ProxyIP, 0, len(proxyURLs))
+	for _, proxyURL := range proxyURLs {
+		// 简单解析代理URL
+		// 格式: http://ip:port 或 socks5://user:pass@ip:port
+		protocol := "http"
+		if strings.HasPrefix(proxyURL, "socks5://") {
+			protocol = "socks5"
+			proxyURL = strings.TrimPrefix(proxyURL, "socks5://")
+		} else if strings.HasPrefix(proxyURL, "http://") {
+			proxyURL = strings.TrimPrefix(proxyURL, "http://")
+		} else if strings.HasPrefix(proxyURL, "https://") {
+			protocol = "https"
+			proxyURL = strings.TrimPrefix(proxyURL, "https://")
+		}
+
+		ips = append(ips, ProxyIP{
+			IP:       proxyURL,
+			Protocol: protocol,
+		})
+	}
+
+	return &FixedIPProvider{ips: ips}
+}
+
+func (p *FixedIPProvider) GetIPList() ([]ProxyIP, error) {
+	return p.ips, nil
+}
+
+func (p *FixedIPProvider) RefreshIPList() ([]ProxyIP, error) {
+	return p.ips, nil
+}