使用fmt.Fprintf（）发送文本/纯文本

Question

I am running into a rather strange (hopefully easily fixable) problem with fmt.Printf(string)

I have a GO application that uses net.Listener() to listen for connections on port 8080.

Using a web browser, I connect to the server. When the server receives a connection, it accepts and responds with the following code (I have removed the error handling)

func main() {
  socket, _ := net.Listen("tcp", ":8080")

  for {
    connection, _ := socket.Accept()
    go handleClient(connection)
  }
}    


// Function called as a go routine by main after accepting a connection
func handleClient(c net.Conn) {
    defer c.Close()

    r := bufio.NewReader(c)
    for {
      // Read each header line individually
      req, err := r.ReadString('
')
      if err != nil && err != io.EOF {
        // Call function that prints the error to the console
        checkError(err)
      }

      // Show request headers in terminal
      fmt.Print(req)

      // Stop reading request headers
      if len(req) <= 2 {
        break
      }
    }

    // Create generic response headers - for testing only
    var headers = "HTTP/1.1 200 OK
Content-Type: text/plain
Content-Length: 70
Connection: keep-alive

"

    // Get current dir path
    pwd, _ := os.Getwd()

    // Read a file (content says "This is a test, five times"
    body, err := ioutil.ReadFile(pwd + "/test.txt")
    if err != nil {
      checkError(err)
    }

    // Print to terminal
    fmt.Println(headers + string(body))

    // Send to client
    fmt.Fprintf(c, headers + string(body))

My terminal prints out (headers + body) and shows the content EXACTLY as I want it. The headers first, followed by and then the HTML content. However, my web browser only shows:

1) This is a test
2) This is a test
3) This is a test
4) This is a tes

My terminal shows all 5 lines (browser shows 4), and the 4th line is missing its last character. Is there some form of buffer that I need to set?

Lastly, this is a school assignment and we are told not to use libraries that make doing this easier (HTTP GO Libraries for example).

Thanks for any help.

EDIT: The entire function has now been posted. Note that the last two lines print the same thing. The console shows the text exactly how I intend it to be. The print to the client breaks a certain amount of bytes. Even if I do one large line, it still stops printing at some point.

EDIT 2: I have added a line that reads a file. The file is read by my browser just fine, but I have the same problem. The content is cut off.

Answer 1

Try sending this to the browser before you send the other response:

fmt.Fprintf(c, "HTTP/1.0 200 OK
")
fmt.Fprintf(c, "Content-Type: text/plain
")
fmt.Fprintf(c, "
")