stream_socket_accept
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Stream Funções
PHP Manual

# stream_socket_client

(PHP 5)

stream_socket_client — Open Internet or Unix domain socket connection

### Descrição

resource stream_socket_client ( string `$remote_socket` [, int `&$errno` [, string `&$errstr` [, float `$timeout` = ini_get("default_socket_timeout") [, int `$flags` = STREAM_CLIENT_CONNECT [, resource `$context` ]]]]] )

Initiates a stream or datagram connection to the destination specified by `remote_socket`. The type of socket created is determined by the transport specified using standard URL formatting: transport://target. For Internet Domain sockets (AF_INET) such as TCP and UDP, the target portion of the `remote_socket` parameter should consist of a hostname or IP address followed by a colon and a port number. For Unix domain sockets, the `target` portion should point to the socket file on the filesystem.

> Nota: The stream will by default be opened in blocking mode. You can switch it to non-blocking mode by using stream_set_blocking().

### Parâmetros

`remote_socket`

  Address to the socket to connect to.

`errno`

  Will be set to the system level error number if connection fails.

`errstr`

  Will be set to the system level error message if the connection fails.

`timeout`

  Number of seconds until the connect() system call should timeout.

  > Nota: This parameter only applies when not making asynchronous connection attempts.

  > Nota: To set a timeout for reading/writing data over the socket, use the stream_set_timeout(), as the `timeout` only applies while making connecting the socket.

`flags`

  Bitmask field which may be set to any combination of connection flags. Currently the select of connection flags is limited to `STREAM_CLIENT_CONNECT` (default), `STREAM_CLIENT_ASYNC_CONNECT` and `STREAM_CLIENT_PERSISTENT`.

`context`

  A valid context resource created with stream_context_create().

### Valor Retornado

On success a stream resource is returned which may be used together with the other file functions (such as fgets(), fgetss(), fwrite(), fclose(), and feof()), `FALSE` on failure.

### Erros

On failure the `errno` and `errstr` arguments will be populated with the actual system level error that occurred in the system-level connect() call. If the value returned in `errno` is 0 and the function returned `FALSE`, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket. Note that the `errno` and `errstr` arguments will always be passed by reference.

### Exemplos

Exemplo #1 stream_socket_client() example

`<?php
$fp = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
fwrite($fp, "GET / HTTP/1.0\r\nHost: www.example.com\r\nAccept: */*\r\n\r\n");
while (!feof($fp)) {
echo fgets($fp, 1024);
}
fclose($fp);
}
?>`

Exemplo #2 Using UDP connection

Retrieving the day and time from the UDP service "daytime" (port 13) on localhost.

`<?php
$fp = stream_socket_client("udp://127.0.0.1:13", $errno, $errstr);
if (!$fp) {
echo "ERROR: $errno - $errstr<br />\n";
} else {
fwrite($fp, "\n");
echo fread($fp, 26);
fclose($fp);
}
?>`

### Notas

Aviso

UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

> Nota: Quando informando endereços IPv6 numéricos (por exemplo, fe80::1), você precisa englobar o IP entre colchetes. Exemplo: tcp://[fe80::1]:80.

> Nota: Depending on the environment, the Unix domain or the optional connect timeout may not be available. A list of available transports can be retrieved using stream_get_transports(). See Lista de Transportes via Socket Suportados for a list of built in transports.

### Veja Também

- stream_socket_server() - Create an Internet or Unix domain server socket
- stream_set_blocking() - Set blocking/non-blocking mode on a stream
- stream_set_timeout() - Set timeout period on a stream
- stream_select() - Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by tv_sec and tv_usec
- fgets() - Lê uma linha de um ponteiro de arquivo
- fgetss() - Ler uma linha de um ponteiro de arquivo e retira as tags HTML
- fwrite() - Escrita binary-safe em arquivos
- fclose() - Fecha um ponteiro de arquivo aberto
- feof() - Testa pelo fim-de-arquivo (eof) em um ponteiro de arquivo
- Funções da cURL

stream_socket_accept
stream_socket_enable_crypto
Stream Funções
PHP Manual