从共享库运行服务器

Question

尝试从共享库运行 servr，所以我做了以下操作：将shahred图书馆写成：// server.gopackage mainimport (    "fmt"    "net/http")import "C"func hello(w http.ResponseWriter, req *http.Request) {    fmt.Fprintf(w, "hello\n")}func headers(w http.ResponseWriter, req *http.Request) {    for name, headers := range req.Header {        for _, h := range headers {            fmt.Fprintf(w, "%v: %v\n", name, h)        }    }}func main() {}// export Run serverfunc Run(port string) {    http.HandleFunc("/hello", hello)    http.HandleFunc("/headers", headers)    if err := http.ListenAndServe("localhost:"+port, nil); err == nil {        fmt.Println("listening to 8090")    } else {        fmt.Println("ListenAndServe: ", err)    }}将共享库编译为：$ go build -buildmode c-shared -o server.so server.go将调用共享库中的函数的主文件写入为：Run//main.gopackage main/*#cgo LDFLAGS: -ldl#include <dlfcn.h>void Run(char* port){}*/import "C"func main() {    // handle := C.dlopen(C.CString("server.so"), C.RTLD_LAZY)    // C.dlsym(handle, C.CString("8090"))    C.dlopen(C.CString("server.so"), C.RTLD_LAZY)    C.run(C.CString("8090"))}将主文件运行为：$ go run main.go主功能已直接终止，并且 srver 尚未在http://localhost:8090/hello

Answer 1

你为什么不把它分成一个go包（例如：包服务器）和导入这个包的主应用程序：

yourproject/cmd/server/main.go

package main

import (

    "yourproject/internal/server"

)

func main() {

    srv := server.New()

    // ...

    port := "8443"

    // do some logic here

    srv.Run(port)

}

和 yourproject/internal/server/server.go

package server

import (

    "fmt"

    "net/http"

)

import "C"

type Server struct{}

func New() *Server {

    return &Server{}

}

func hello(w http.ResponseWriter, req *http.Request) {

    fmt.Fprintf(w, "hello\n")

}

func headers(w http.ResponseWriter, req *http.Request) {

    for name, headers := range req.Header {

        for _, h := range headers {

            fmt.Fprintf(w, "%v: %v\n", name, h)

        }

    }

}

// export Run server

func (s *Server) Run(port string) {

    http.HandleFunc("/hello", hello)

    http.HandleFunc("/headers", headers)

    if err := http.ListenAndServe("localhost:"+port, nil); err == nil {

        fmt.Println("listening to 8090")

    } else {

        fmt.Println("ListenAndServe: ", err)

    }

}