[英]Cannot get response from PHP socket server
我制作了簡單的套接字Java客戶端和基於php cli的套接字回顯服務器。
但是客戶端不會從服務器獲得回顯。
有一個代碼...
[CLIENT_CLASS(JAVA)]
import java.net.*;
import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
public class SocketManager
{
public static void main(String args[])
{
int count = 0;
Socket socket = null;
System.out.println("[TO 8175] Connecting to " + "clashofages.ru" + ":" + 8175 + "...");
while (socket == null) {
if (count > 10) {
System.out.println("[TO 8175] Can't connect to server...");
return 1;
}
socket = connect("clashofages.ru", 8175);
count++;
}
System.out.println("[TO 8175] Successfuly connected!");
DataInputStream in = getInput(socket);
if (in == null) {
return 2;
}
DataOutputStream out = getOutput(socket);
if (out == null) {
return 3;
}
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
String line = null;
while (true) {
System.out.println("[TO 8175] Type in message for server.");
try {
line = keyboard.readLine();
} catch (IOException ex) {
Logger.getLogger(SocketManager.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("[TO 8175] Sending message to server...");
int writeres = write(out, line);
if (writeres != 2) {
return 4 + writeres;
}
System.out.println("[TO 8175] Message sent successfuly!");
if (line.equals("exit")) {
System.out.println("[TO 8175] Exiting...");
return 0;
}
line = read(in);
if (line == null) {
return 6;
}
System.out.println("[TO 8175] Server: " + line);
}
}
public static Socket connect(String adress, int port)
{
Socket socket = null;
InetAddress ipAddress = null;
try {
ipAddress = InetAddress.getByName(adress);
} catch (UnknownHostException ex) {
System.out.println("[SOCKET_ERROR] Can't convert " + adress + " to InetAdress object");
return socket;
}
try {
socket = new Socket(ipAddress, port);
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't connect to " + adress + ":" + port);
return null;
}
return socket;
}
public static DataInputStream getInput(Socket socket)
{
InputStream sin = null;
try {
sin = socket.getInputStream();
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't get socket's input stream");
return null;
}
return new DataInputStream(sin);
}
public static DataOutputStream getOutput(Socket socket)
{
OutputStream sout = null;
try {
sout = socket.getOutputStream();
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't get socket's output stream");
return null;
}
return new DataOutputStream(sout);
}
public static int write(DataOutputStream out, String string)
{
try {
out.writeUTF(string);
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't write to output stream");
return 0;
}
try {
out.flush();
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't flush output stream");
return 1;
}
return 2;
}
public static String read(DataInputStream in)
{
try {
return in.readUTF();
} catch (IOException ex) {
System.out.println("[SOCKET_ERROR] Can't read input stream");
return null;
}
}
[SERVER_CLI_CLASS(PHP)]
#!/usr/bin/php
<?php
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$address = '0.0.0.0';
$port = 8175;
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
echo "[SERVER] socket_create() failed: ".socket_strerror(socket_last_error())."\n";
}
if (socket_bind($sock, $address, $port) === false) {
echo "[SERVER] socket_bind() failed: ".socket_strerror(socket_last_error($sock))."\n";
}
if (socket_listen($sock, 5) === false) {
echo "[SERVER] socket_listen() failed: ".socket_strerror(socket_last_error($sock))."\n";
}
echo "[SERVER] Start listening ".$address.":".$port."\n";
do {
if (($msgsock = socket_accept($sock)) === false) {
echo "[SERVER] socket_accept() failed: reason: ".socket_strerror(socket_last_error($sock))."\n";
break;
}
echo "[SERVER] Client connected!\n";
$msg = "[SERVER] Welcome!\n";
socket_write($msgsock, $msg, strlen($msg));
do {
if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
echo "[SERVER] socket_read() failed: ".socket_strerror(socket_last_error($msgsock))."\n";
break 2;
}
if (!$buf = trim($buf)) {
continue;
}
if ($buf == 'quit') {
break;
}
$talkback = "[SERVER] You said '$buf'.\n";
socket_write($msgsock, $talkback, strlen($talkback));
echo "[CLIENT] $buf\n";
} while (true);
socket_close($msgsock);
} while (true);
socket_close($sock);
?>
服務器輸出:
[SERVER] Start listening 0.0.0.0:8175
[SERVER] Client connected!
客戶輸出:
[TO 8175] Connecting to clashofages.ru:8175...
[TO 8175] Successfuly connected!
[TO 8175] Type in message for server.
Hi!
[TO 8175] Sending message to server...
[TO 8175] Message sent successfuly!
知道嗎,兄弟?
PS我認為當PHP嘗試寫入客戶端時出現問題...
PPS您可以自己嘗試。 服務器正在工作。
在http://www.php.net/manual/en/function.socket-read.php中閱讀:
PHP_NORMAL_READ-讀取在\\ n或\\ r停止。
在http://docs.oracle.com/javase/7/docs/api/java/io/BufferedReader.html#readLine()中閱讀:
返回:包含行內容的String, 不包含任何行終止字符;如果已到達流的末尾,則返回null
因此,您必須在發送的字符串之前添加\\ n或\\ n到讀取的字符串。
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