gtcp
模块也提供了一些常用的工具方法。
使用方式:
import "github.com/gogf/gf/g/net/gtcp"
接口文档:
https://godoc.org/github.com/gogf/gf/g/net/gtcp
func LoadKeyCrt(crtFile, keyFile string) (*tls.Config, error)
func NewNetConn(addr string, timeout ...int) (net.Conn, error)
func NewNetConnKeyCrt(addr, crtFile, keyFile string) (net.Conn, error)
func NewNetConnTLS(addr string, tlsConfig *tls.Config) (net.Conn, error)
func Send(addr string, data []byte, retry ...Retry) error
func SendPkg(addr string, data []byte, option ...PkgOption) error
func SendPkgWithTimeout(addr string, data []byte, timeout time.Duration, option ...PkgOption) error
func SendRecv(addr string, data []byte, receive int, retry ...Retry) ([]byte, error)
func SendRecvPkg(addr string, data []byte, option ...PkgOption) ([]byte, error)
func SendRecvPkgWithTimeout(addr string, data []byte, timeout time.Duration, option ...PkgOption) ([]byte, error)
func SendRecvWithTimeout(addr string, data []byte, receive int, timeout time.Duration, retry ...Retry) ([]byte, error)
func SendWithTimeout(addr string, data []byte, timeout time.Duration, retry ...Retry) error
NewNetConn
用于简化标准库连接对象net.Conn
的创建;NewNetConnTLS
和NewNetConnKeyCrt
用于创建支持TLS安全加密通信的TCP客户端;Send*
系列方法直接通过给定地址进行数据发送,并获取该请求的返回结果,用于短链接请求的情况;
以下为一个简单的示例,我们使用工具方法来访问指定的Web站点:
package main
import (
"fmt"
"github.com/gogf/gf/g/net/gtcp"
)
func main() {
data, err := gtcp.SendRecv("www.baidu.com:80", []byte("HEAD / HTTP/1.1\n\n"), -1)
if err != nil {
panic(err)
}
fmt.Println(string(data))
}
在这个示例中,我们通过TCP访问百度首页,模拟HTTP请求头信息,并获得返回结果。执行后,输出结果如下:
HTTP/1.1 302 Found
Connection: Keep-Alive
Content-Length: 17931
Content-Type: text/html
Date: Tue, 04 Jun 2019 15:53:09 GMT
Etag: "54d9749e-460b"
Server: bfe/1.0.8.18