feat(httpprobe): go-hua/http 迁入并更名 httpprobe(HTTP/HTTPS 协议探测)

- 原包名 http 与标准库 net/http 严重混淆, 实为按首部字节探测协议,
  更名 httpprobe; spmux 将基于此做单端口分流, 附测试、例程与 README
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2026-09-20 12:25:36 +08:00
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commit caa65209ac
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// httpprobe 包示例:按报文首部字节识别流量是 HTTP 还是 HTTPS(常用于网关/代理分流)
package main
import (
"fmt"
"git.zeroonesoft.cn/golib/zogo/httpprobe"
)
func main() {
// HTTP 请求报文(以请求方法开头)
httpData := []byte("GET /index.html HTTP/1.1\r\nHost: localhost\r\n\r\n")
fmt.Println("IsHttp(HTTP报文):", httpprobe.IsHttp(httpData))
// TLS 握手报文(首字节 0x16 0x03)
httpsData := make([]byte, 32)
httpsData[0] = 0x16
httpsData[1] = 0x03
httpsData[3] = 0x01
copy(httpsData[8:], "http") // ClientHello 的 SNI 中会出现 host 字符
fmt.Println("IsHttps(TLS报文):", httpprobe.IsHttps(httpsData))
// 普通数据两者都不是
fmt.Println("IsHttp(普通数据):", httpprobe.IsHttp([]byte("hello world")))
fmt.Println("IsHttps(普通数据):", httpprobe.IsHttps([]byte("hello world")))
}
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# httpprobe
按报文首部字节识别流量是 HTTP 还是 HTTPS(TLS ClientHello),常用于网关/代理
在同一端口上做协议分流(本仓库 `spmux` 即基于此实现)。
> 迁移自 go-hua/http 并更名:原包名 `http` 与标准库 `net/http` 严重混淆,
> 实际功能是"协议探测"而非 HTTP 客户端,故更名 `httpprobe`。
## 用法
```go
import "git.zeroonesoft.cn/golib/zogo/httpprobe"
httpprobe.IsHttp([]byte("GET /index.html HTTP/1.1\r\nHost: a.com\r\n\r\n")) // true
httpprobe.IsHttp([]byte("hello world")) // false
// TLS ClientHello(首字节 0x16 0x03)
httpprobe.IsHttps(clientHello) // true
```
完整可运行例程:[examples/httpprobe/main.go](../examples/httpprobe/main.go)
## 注意
- 识别基于首部字节的启发式规则:HTTP 按合法请求方法前缀判断,HTTPS 按
TLS record 头(0x16 0x03)判断,均为工程实践口径而非完整协议解析。
- 迁移自 go-hua 的消费方:`http.IsHttp(...)` → `httpprobe.IsHttp(...)`。
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// Package httpprobe 按报文首部字节识别流量是 HTTP 还是 HTTPS,常用于网关/代理协议分流。
package httpprobe
import (
"bytes"
"fmt"
"strings"
)
// IsHttps 判断报文是否为 TLS 握手(首字节 0x16 0x03 且包含 host 特征)
func IsHttps(data []byte) bool {
if len(data) == 0 {
return false
} else if data[0] != 0x16 {
return false
} else if data[1] != 0x3 {
return false
} else if data[3] != 0x1 && data[3] != 0x2 && data[3] != 0x3 && data[3] != 0x4 {
return false
} else if !bytes.ContainsAny(data, "http") {
return false
}
return true
}
// IsHttp 判断报文是否为 HTTP 请求(按 GET/POST/PUT 等方法前缀识别)
func IsHttp(data []byte) bool {
fmt.Print(string(data))
if len(data) < 8 {
fmt.Println("<8")
return false
} else if strings.EqualFold(string(data[:3]), "GET") {
fmt.Println("GET")
return true
} else if strings.EqualFold(string(data[:4]), "HEAD") {
fmt.Println("HEAD")
return true
} else if strings.EqualFold(string(data[:4]), "POST") {
fmt.Println("POST")
return true
} else if strings.EqualFold(string(data[:3]), "PUT") {
fmt.Println("PUT")
return true
} else if strings.EqualFold(string(data[:6]), "DELETE") {
fmt.Println("DELETE")
return true
} else if strings.EqualFold(string(data[:7]), "CONNECT") {
fmt.Println("CONNECT")
return true
} else if strings.EqualFold(string(data[:7]), "OPTIONS") {
fmt.Println("OPTIONS")
return true
} else if strings.EqualFold(string(data[:5]), "TRACE") {
fmt.Println("TRACE")
return true
}
return false
}
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package httpprobe
import "testing"
func TestIsHttpMethods(t *testing.T) {
cases := map[string][]byte{
"GET": []byte("GET /index.html HTTP/1.1\r\nHost: a.com\r\n\r\n"),
"POST": []byte("POST /api HTTP/1.1\r\nHost: a.com\r\n\r\n{}"),
"PUT": []byte("PUT /api HTTP/1.1\r\nHost: a.com\r\n\r\n"),
"HEAD": []byte("HEAD / HTTP/1.1\r\nHost: a.com\r\n\r\n"),
"DELETE": []byte("DELETE /api HTTP/1.1\r\nHost: a.com\r\n\r\n"),
"CONNECT": []byte("CONNECT a.com:443 HTTP/1.1\r\n\r\n"),
"OPTIONS": []byte("OPTIONS / HTTP/1.1\r\nHost: a.com\r\n\r\n"),
"TRACE": []byte("TRACE / HTTP/1.1\r\nHost: a.com\r\n\r\n"),
}
for method, data := range cases {
if !IsHttp(data) {
t.Errorf("IsHttp(%s...) 应为 true", method)
}
}
}
func TestIsHttpNegative(t *testing.T) {
if IsHttp([]byte("hello world! This is plain data")) {
t.Error("普通文本不应识别为 HTTP")
}
if IsHttp(nil) {
t.Error("空数据不应识别为 HTTP")
}
if IsHttp([]byte("GET")) {
t.Error("短于 8 字节不应识别为 HTTP")
}
// TLS 握手不是 HTTP
tls := []byte{0x16, 0x03, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05}
if IsHttp(tls) {
t.Error("TLS 握手不应识别为 HTTP")
}
}
func TestIsHttpCaseInsensitive(t *testing.T) {
if !IsHttp([]byte("get / HTTP/1.1")) {
t.Error("IsHttp 应大小写不敏感")
}
if !IsHttp([]byte("trace / HTTP/1.1")) {
t.Error("小写 trace 应识别为 HTTP")
}
}
func TestIsHttps(t *testing.T) {
data := make([]byte, 64)
data[0] = 0x16
data[1] = 0x03
data[3] = 0x01
copy(data[40:], "http")
if !IsHttps(data) {
t.Error("TLS ClientHello 应识别为 HTTPS")
}
}
func TestIsHttpsNegative(t *testing.T) {
if IsHttps([]byte("hello world")) {
t.Error("普通文本不应识别为 HTTPS")
}
if IsHttps(nil) {
t.Error("空数据不应识别为 HTTPS")
}
// 非 TLS 握手类型(第一字节不是 0x16)
wrong := make([]byte, 16)
wrong[0] = 0x17
wrong[1] = 0x03
if IsHttps(wrong) {
t.Error("非握手记录不应识别为 HTTPS")
}
}