如何在成功连接 websocket 后向特定 URL 发送消息?
How to make send message to particular URI after successfull webscoket connection?
我在 localhost:443/server-demo(jetty websocket 服务器)上有一个安全的 websocket 服务器 运行。
现在我正在编写一个可以与 websocket 服务器通信的 go 客户端。我能够使用正确的证书连接到 websocket 服务器。这是示例代码。
package main
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"log"
)
func main() {
cert, err := tls.LoadX509KeyPair("nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin.pem", "nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin-key.pem")
if err != nil {
log.Fatalf("server: loadkeys: %s", err)
}
config := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
conn, err := tls.Dial("tcp", "127.0.0.1:443", &config)
if err != nil {
log.Fatalf("client: dial: %s", err)
}
defer conn.Close()
log.Println("client: connected to: ", conn.RemoteAddr())
state := conn.ConnectionState()
for _, v := range state.PeerCertificates {
fmt.Println(x509.MarshalPKIXPublicKey(v.PublicKey))
fmt.Println(v.Subject)
}
log.Println("client: handshake: ", state.HandshakeComplete)
log.Println("client: mutual: ", state.NegotiatedProtocolIsMutual)
message := "Hello\n"
n, err := io.WriteString(conn, message)
if err != nil {
log.Fatalf("client: write: %s", err)
}
log.Printf("client: wrote %q (%d bytes)", message, n)
reply := make([]byte, 256)
n, err = conn.Read(reply)
log.Printf("client: read %q (%d bytes)", string(reply[:n]), n)
log.Print("client: exiting")
}
以上代码抛出此错误:
"HTTP/1.1 400 No URI\r\nContent-Type: text/html;charset=iso-8859-1\r\nContent-Length: 49\r\nConnection: close\r\nServer: Jetty(9.4.19.v20190610)\r\n\r\n<h1>Bad Message 400</h1><pre>reason: No URI</pre>" (188 bytes)
我的问题是建立连接后如何向特定 URI 发送消息?即我想向 wss://localhost:443/server-demo
.
发送消息
问题中的代码没有与服务器建立 WebSocket 连接。
要建立 WebSocket 连接,应用程序必须向 conn
写入 WebSocket 握手并接收握手响应。详情见RFC。
大多数应用程序使用 websocket 包来处理所有这些细节。 gorilla/websocket 包是一个受欢迎的选择。
这段代码应该可以让您开始使用大猩猩:
cert, err := tls.LoadX509KeyPair("nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin.pem", "nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin-key.pem")
if err != nil {
log.Fatalf("server: loadkeys: %s", err)
}
config := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
d := websocket.Dialer{
TLSClientConfig: &config,
}
c, _, err := d.Dial("wss://localhost:443/server-demo", nil)
if err != nil {
log.Fatal(err)
}
defer c.Close()
// Use `c` to send and receive messages
我在 localhost:443/server-demo(jetty websocket 服务器)上有一个安全的 websocket 服务器 运行。 现在我正在编写一个可以与 websocket 服务器通信的 go 客户端。我能够使用正确的证书连接到 websocket 服务器。这是示例代码。
package main
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"log"
)
func main() {
cert, err := tls.LoadX509KeyPair("nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin.pem", "nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin-key.pem")
if err != nil {
log.Fatalf("server: loadkeys: %s", err)
}
config := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
conn, err := tls.Dial("tcp", "127.0.0.1:443", &config)
if err != nil {
log.Fatalf("client: dial: %s", err)
}
defer conn.Close()
log.Println("client: connected to: ", conn.RemoteAddr())
state := conn.ConnectionState()
for _, v := range state.PeerCertificates {
fmt.Println(x509.MarshalPKIXPublicKey(v.PublicKey))
fmt.Println(v.Subject)
}
log.Println("client: handshake: ", state.HandshakeComplete)
log.Println("client: mutual: ", state.NegotiatedProtocolIsMutual)
message := "Hello\n"
n, err := io.WriteString(conn, message)
if err != nil {
log.Fatalf("client: write: %s", err)
}
log.Printf("client: wrote %q (%d bytes)", message, n)
reply := make([]byte, 256)
n, err = conn.Read(reply)
log.Printf("client: read %q (%d bytes)", string(reply[:n]), n)
log.Print("client: exiting")
}
以上代码抛出此错误:
"HTTP/1.1 400 No URI\r\nContent-Type: text/html;charset=iso-8859-1\r\nContent-Length: 49\r\nConnection: close\r\nServer: Jetty(9.4.19.v20190610)\r\n\r\n<h1>Bad Message 400</h1><pre>reason: No URI</pre>" (188 bytes)
我的问题是建立连接后如何向特定 URI 发送消息?即我想向 wss://localhost:443/server-demo
.
问题中的代码没有与服务器建立 WebSocket 连接。
要建立 WebSocket 连接,应用程序必须向 conn
写入 WebSocket 握手并接收握手响应。详情见RFC。
大多数应用程序使用 websocket 包来处理所有这些细节。 gorilla/websocket 包是一个受欢迎的选择。
这段代码应该可以让您开始使用大猩猩:
cert, err := tls.LoadX509KeyPair("nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin.pem", "nifi-1.10.0-bin/nifi-1.10.0/extras/gen-certs/certs/admin-key.pem")
if err != nil {
log.Fatalf("server: loadkeys: %s", err)
}
config := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
d := websocket.Dialer{
TLSClientConfig: &config,
}
c, _, err := d.Dial("wss://localhost:443/server-demo", nil)
if err != nil {
log.Fatal(err)
}
defer c.Close()
// Use `c` to send and receive messages