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socket.cc
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| @link https://www.swoole.com/ |
| @contact [email protected] |
| @license https://github.com/swoole/swoole-src/blob/master/LICENSE |
| @Author Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "swoole_string.h"
#include "swoole_util.h"
#include "swoole_reactor.h"
#include "swoole_buffer.h"
#include "swoole_base64.h"
#include "swoole_coroutine_socket.h"
#include "swoole_coroutine_system.h"
namespace swoole {
namespace coroutine {
enum Socket::TimeoutType Socket::timeout_type_list[4] = {TIMEOUT_DNS, TIMEOUT_CONNECT, TIMEOUT_READ, TIMEOUT_WRITE};
void Socket::timer_callback(Timer *timer, TimerNode *tnode) {
Socket *socket = (Socket *) tnode->data;
socket->set_err(ETIMEDOUT);
if (sw_likely(tnode == socket->read_timer)) {
socket->read_timer = nullptr;
socket->read_co->resume();
} else if (tnode == socket->write_timer) {
socket->write_timer = nullptr;
socket->write_co->resume();
} else {
abort();
}
}
int Socket::readable_event_callback(Reactor *reactor, Event *event) {
Socket *socket = (Socket *) event->socket->object;
socket->set_err(0);
#ifdef SW_USE_OPENSSL
if (sw_unlikely(socket->want_event != SW_EVENT_NULL)) {
if (socket->want_event == SW_EVENT_READ) {
socket->write_co->resume();
}
} else
#endif
{
if (socket->recv_barrier && (*socket->recv_barrier)() && !event->socket->event_hup) {
return SW_OK;
}
socket->read_co->resume();
}
return SW_OK;
}
int Socket::writable_event_callback(Reactor *reactor, Event *event) {
Socket *socket = (Socket *) event->socket->object;
socket->set_err(0);
#ifdef SW_USE_OPENSSL
if (sw_unlikely(socket->want_event != SW_EVENT_NULL)) {
if (socket->want_event == SW_EVENT_WRITE) {
socket->read_co->resume();
}
} else
#endif
{
if (socket->send_barrier && (*socket->send_barrier)() && !event->socket->event_hup) {
return SW_OK;
}
socket->write_co->resume();
}
return SW_OK;
}
int Socket::error_event_callback(Reactor *reactor, Event *event) {
Socket *socket = (Socket *) event->socket->object;
if (socket->write_co) {
socket->set_err(0);
socket->write_co->resume();
}
// Notice: socket maybe deleted in write coroutine
if (event->socket->object == socket && !event->socket->removed && socket->read_co) {
socket->set_err(0);
socket->read_co->resume();
}
return SW_OK;
}
bool Socket::add_event(const EventType event) {
bool ret = true;
if (sw_likely(!(socket->events & event))) {
if (socket->removed) {
ret = swoole_event_add(socket, event) == SW_OK;
} else {
ret = swoole_event_set(socket, socket->events | event) == SW_OK;
}
}
set_err(ret ? 0 : errno);
return ret;
}
#ifdef SW_LOG_TRACE_OPEN
static const char *get_trigger_event_name(Socket *socket, EventType added_event) {
if (socket->is_closed()) {
return "CLOSE";
}
if (socket->errCode) {
return socket->errCode == ETIMEDOUT ? "TIMEOUT" : "ERROR";
}
return added_event == SW_EVENT_READ ? "READ" : "WRITE";
}
static const char *get_wait_event_name(Socket *socket, EventType event) {
#ifdef SW_USE_OPENSSL
if (socket->get_socket()->ssl_want_read) {
return "SSL READ";
} else if (socket->get_socket()->ssl_want_write) {
return "SSL WRITE";
} else
#endif
{
return event == SW_EVENT_READ ? "READ" : "WRITE";
}
}
#endif
/**
* If an exception occurs while waiting for an event, false is returned.
* For example, when waiting for a read event, timeout, connection closed, are exceptions to the interrupt event.
* And these exceptions will actively set the errCode, We don't need to set the exception's errCode ourselves.
* We only need to set the errCode for the socket operation when wait_event returns true,
* which means that the exception's error code priority is greater than the current event error priority.
*/
bool Socket::wait_event(const EventType event, const void **__buf, size_t __n) {
EventType added_event = event;
Coroutine *co = Coroutine::get_current_safe();
if (!co) {
return false;
}
if (sw_unlikely(socket->close_wait)) {
set_err(SW_ERROR_CO_SOCKET_CLOSE_WAIT);
return false;
}
// clear the last errCode
set_err(0);
#ifdef SW_USE_OPENSSL
if (sw_unlikely(socket->ssl && ((event == SW_EVENT_READ && socket->ssl_want_write) ||
(event == SW_EVENT_WRITE && socket->ssl_want_read)))) {
if (sw_likely(socket->ssl_want_write && add_event(SW_EVENT_WRITE))) {
want_event = SW_EVENT_WRITE;
} else if (socket->ssl_want_read && add_event(SW_EVENT_READ)) {
want_event = SW_EVENT_READ;
} else {
return false;
}
added_event = want_event;
} else
#endif
if (sw_unlikely(!add_event(event))) {
return false;
}
swoole_trace_log(SW_TRACE_SOCKET,
"socket#%d blongs to cid#%ld is waiting for %s event",
sock_fd,
co->get_cid(),
get_wait_event_name(this, event));
Coroutine::CancelFunc cancel_fn = [this, event](Coroutine *co) { return cancel(event); };
if (sw_likely(event == SW_EVENT_READ)) {
read_co = co;
read_co->yield(&cancel_fn);
read_co = nullptr;
} else if (event == SW_EVENT_WRITE) {
if (sw_unlikely(!zero_copy && __n > 0 && *__buf != get_write_buffer()->str)) {
write_buffer->clear();
if (write_buffer->append((const char *) *__buf, __n) != SW_OK) {
set_err(ENOMEM);
goto _failed;
}
*__buf = write_buffer->str;
}
write_co = co;
write_co->yield(&cancel_fn);
write_co = nullptr;
} else {
assert(0);
return false;
}
_failed:
#ifdef SW_USE_OPENSSL
// maybe read_co and write_co are all waiting for the same event when we use SSL
if (sw_likely(want_event == SW_EVENT_NULL || !has_bound()))
#endif
{
Reactor *reactor = SwooleTG.reactor;
if (sw_likely(added_event == SW_EVENT_READ)) {
reactor->remove_read_event(socket);
} else {
reactor->remove_write_event(socket);
}
}
#ifdef SW_USE_OPENSSL
want_event = SW_EVENT_NULL;
#endif
swoole_trace_log(SW_TRACE_SOCKET,
"socket#%d blongs to cid#%ld trigger %s event",
sock_fd,
co->get_cid(),
get_trigger_event_name(this, added_event));
return !is_closed() && !errCode;
}
bool Socket::socks5_handshake() {
Socks5Proxy *ctx = socks5_proxy;
char *p;
ssize_t n;
uchar version, method, result;
Socks5Proxy::pack(ctx->buf, !socks5_proxy->username.empty() ? 0x02 : 0x00);
socks5_proxy->state = SW_SOCKS5_STATE_HANDSHAKE;
if (send(ctx->buf, 3) != 3) {
return false;
}
n = recv(ctx->buf, sizeof(ctx->buf));
if (n <= 0) {
return false;
}
version = ctx->buf[0];
method = ctx->buf[1];
if (version != SW_SOCKS5_VERSION_CODE) {
swoole_error_log(SW_LOG_NOTICE, SW_ERROR_SOCKS5_UNSUPPORT_VERSION, "SOCKS version is not supported");
return false;
}
if (method != ctx->method) {
swoole_error_log(
SW_LOG_NOTICE, SW_ERROR_SOCKS5_UNSUPPORT_METHOD, "SOCKS authentication method is not supported");
return false;
}
// authentication
if (method == SW_SOCKS5_METHOD_AUTH) {
p = ctx->buf;
// username
p[0] = 0x01;
p[1] = ctx->username.length();
p += 2;
if (!ctx->username.empty()) {
memcpy(p, ctx->username.c_str(), ctx->username.length());
p += ctx->username.length();
}
// password
p[0] = ctx->password.length();
p += 1;
if (!ctx->password.empty()) {
memcpy(p, ctx->password.c_str(), ctx->password.length());
p += ctx->password.length();
}
// auth request
ctx->state = SW_SOCKS5_STATE_AUTH;
if (send(ctx->buf, p - ctx->buf) != p - ctx->buf) {
return false;
}
// auth response
n = recv(ctx->buf, sizeof(ctx->buf));
if (n <= 0) {
return false;
}
uchar version = ctx->buf[0];
uchar status = ctx->buf[1];
if (version != 0x01) {
swoole_error_log(SW_LOG_NOTICE, SW_ERROR_SOCKS5_UNSUPPORT_VERSION, "SOCKS version is not supported");
return false;
}
if (status != 0x00) {
swoole_error_log(
SW_LOG_NOTICE, SW_ERROR_SOCKS5_AUTH_FAILED, "SOCKS username/password authentication failed");
return false;
}
}
// send connect request
ctx->state = SW_SOCKS5_STATE_CONNECT;
p = ctx->buf;
p[0] = SW_SOCKS5_VERSION_CODE;
p[1] = 0x01;
p[2] = 0x00;
p += 3;
if (ctx->dns_tunnel) {
p[0] = 0x03;
p[1] = ctx->target_host.length();
p += 2;
memcpy(p, ctx->target_host.c_str(), ctx->target_host.length());
p += ctx->target_host.length();
*(uint16_t *) p = htons(ctx->target_port);
p += 2;
if (send(ctx->buf, p - ctx->buf) != p - ctx->buf) {
return false;
}
} else {
p[0] = 0x01;
p += 1;
*(uint32_t *) p = htons(ctx->target_host.length());
p += 4;
*(uint16_t *) p = htons(ctx->target_port);
p += 2;
if (send(ctx->buf, p - ctx->buf) != p - ctx->buf) {
return false;
}
}
// recv response
n = recv(ctx->buf, sizeof(ctx->buf));
if (n <= 0) {
return false;
}
version = ctx->buf[0];
if (version != SW_SOCKS5_VERSION_CODE) {
swoole_error_log(SW_LOG_NOTICE, SW_ERROR_SOCKS5_UNSUPPORT_VERSION, "SOCKS version is not supported");
return false;
}
result = ctx->buf[1];
#if 0
uchar reg = buf[2];
uchar type = buf[3];
uint32_t ip = *(uint32_t *) (buf + 4);
uint16_t port = *(uint16_t *) (buf + 8);
#endif
if (result == 0) {
ctx->state = SW_SOCKS5_STATE_READY;
return true;
} else {
swoole_error_log(SW_LOG_NOTICE,
SW_ERROR_SOCKS5_SERVER_ERROR,
"Socks5 server error, reason: %s",
Socks5Proxy::strerror(result));
return false;
}
}
bool Socket::http_proxy_handshake() {
const std::string *real_host = &http_proxy->target_host;
#ifdef SW_USE_OPENSSL
if (ssl_context && !ssl_context->tls_host_name.empty()) {
real_host = &ssl_context->tls_host_name;
}
#endif
String *send_buffer = get_write_buffer();
ON_SCOPE_EXIT {
send_buffer->clear();
};
size_t n = http_proxy->pack(send_buffer, real_host);
send_buffer->length = n;
swoole_trace_log(SW_TRACE_HTTP_CLIENT, "proxy request: <<EOF\n%.*sEOF", (int) n, send_buffer->str);
if (send(send_buffer->str, n) != (ssize_t) n) {
return false;
}
String *recv_buffer = get_read_buffer();
ON_SCOPE_EXIT {
recv_buffer->clear();
};
ProtocolSwitch ps(this);
open_eof_check = true;
open_length_check = false;
protocol.package_eof_len = sizeof("\r\n\r\n") - 1;
memcpy(protocol.package_eof, SW_STRS("\r\n\r\n"));
if (recv_packet() <= 0) {
return false;
}
swoole_trace_log(SW_TRACE_HTTP_CLIENT, "proxy response: <<EOF\n%.*sEOF", n, recv_buffer->str);
if (!http_proxy->handshake(recv_buffer)) {
set_err(SW_ERROR_HTTP_PROXY_BAD_RESPONSE,
std::string("wrong http_proxy response received, \n[Request]: ") + send_buffer->to_std_string() +
"\n[Response]: " + send_buffer->to_std_string());
return false;
}
return true;
}
void Socket::init_sock_type(SocketType _type) {
type = _type;
network::Socket::get_domain_and_type(_type, &sock_domain, &sock_type);
}
bool Socket::init_sock() {
socket =
make_socket(type, SW_FD_CO_SOCKET, sock_domain, sock_type, sock_protocol, SW_SOCK_NONBLOCK | SW_SOCK_CLOEXEC);
if (socket == nullptr) {
return false;
}
sock_fd = socket->fd;
socket->object = this;
socket->info.type = type;
return true;
}
bool Socket::init_reactor_socket(int _fd) {
socket = swoole::make_socket(_fd, SW_FD_CO_SOCKET);
sock_fd = _fd;
socket->object = this;
socket->socket_type = type;
socket->nonblock = 1;
socket->cloexec = 1;
socket->info.type = type;
return true;
}
Socket::Socket(int _domain, int _type, int _protocol)
: sock_domain(_domain), sock_type(_type), sock_protocol(_protocol) {
type = network::Socket::convert_to_type(_domain, _type);
if (sw_unlikely(!init_sock())) {
return;
}
init_options();
}
Socket::Socket(SocketType _type) {
init_sock_type(_type);
if (sw_unlikely(!init_sock())) {
return;
}
init_options();
}
Socket::Socket(int _fd, SocketType _type) {
if (sw_unlikely(!init_reactor_socket(_fd))) {
return;
}
if (_type == SW_SOCK_RAW) {
return;
}
init_sock_type(_type);
socket->set_nonblock();
init_options();
}
Socket::Socket(int _fd, int _domain, int _type, int _protocol)
: sock_domain(_domain), sock_type(_type), sock_protocol(_protocol) {
type = network::Socket::convert_to_type(_domain, _type);
if (sw_unlikely(!init_reactor_socket(_fd))) {
return;
}
socket->set_nonblock();
init_options();
}
/**
* Only used as accept member method
*/
Socket::Socket(network::Socket *sock, Socket *server_sock) {
type = server_sock->type;
sock_domain = server_sock->sock_domain;
sock_type = server_sock->sock_type;
sock_protocol = server_sock->sock_protocol;
sock_fd = sock->fd;
socket = sock;
socket->object = this;
socket->socket_type = type;
socket->fd_type = SW_FD_CO_SOCKET;
init_options();
/* inherits server socket options */
dns_timeout = server_sock->dns_timeout;
connect_timeout = server_sock->connect_timeout;
read_timeout = server_sock->read_timeout;
write_timeout = server_sock->write_timeout;
open_length_check = server_sock->open_length_check;
open_eof_check = server_sock->open_eof_check;
http2 = server_sock->http2;
protocol = server_sock->protocol;
connected = true;
#ifdef SW_USE_OPENSSL
ssl_context = server_sock->ssl_context;
ssl_is_server = server_sock->ssl_is_server;
if (server_sock->ssl_is_enable() && !ssl_create(server_sock->get_ssl_context())) {
close();
}
#endif
}
bool Socket::getsockname(network::Address *sa) {
sa->len = sizeof(sa->addr);
if (::getsockname(sock_fd, (struct sockaddr *) &sa->addr, &sa->len) != 0) {
set_err(errno);
return false;
}
sa->type = type;
return true;
}
bool Socket::getpeername(network::Address *sa) {
sa->len = sizeof(sa->addr);
if (::getpeername(sock_fd, (struct sockaddr *) &sa->addr, &sa->len) != 0) {
set_err(errno);
return false;
}
sa->type = type;
return true;
}
bool Socket::connect(const struct sockaddr *addr, socklen_t addrlen) {
if (sw_unlikely(!is_available(SW_EVENT_RDWR))) {
return false;
}
int retval;
do {
retval = ::connect(sock_fd, addr, addrlen);
} while (retval < 0 && errno == EINTR);
if (retval < 0) {
if (errno != EINPROGRESS) {
set_err(errno);
return false;
} else {
TimerController timer(&write_timer, connect_timeout, this, timer_callback);
if (!timer.start() || !wait_event(SW_EVENT_WRITE)) {
if (is_closed()) {
set_err(ECONNABORTED);
}
return false;
} else {
if (socket->get_option(SOL_SOCKET, SO_ERROR, &errCode) < 0 || errCode != 0) {
set_err(errCode);
return false;
}
}
}
}
connected = true;
set_err(0);
return true;
}
bool Socket::connect(std::string _host, int _port, int flags) {
if (sw_unlikely(!is_available(SW_EVENT_RDWR))) {
return false;
}
#ifdef SW_USE_OPENSSL
if (ssl_context && (socks5_proxy || http_proxy)) {
/* If the proxy is enabled, the host will be replaced with the proxy ip,
* so we have to handle the host first,
* if the host is not a ip, assign it to ssl_host_name
*/
union {
struct in_addr sin;
struct in6_addr sin6;
} addr;
if ((sock_domain == AF_INET && !inet_pton(AF_INET, _host.c_str(), &addr.sin)) ||
(sock_domain == AF_INET6 && !inet_pton(AF_INET6, _host.c_str(), &addr.sin6))) {
ssl_host_name = _host;
}
}
#endif
if (socks5_proxy) {
socks5_proxy->target_host = _host;
socks5_proxy->target_port = _port;
_host = socks5_proxy->host;
_port = socks5_proxy->port;
} else if (http_proxy) {
http_proxy->target_host = _host;
http_proxy->target_port = _port;
_host = http_proxy->proxy_host;
_port = http_proxy->proxy_port;
}
if (is_port_required()) {
if (_port == -1) {
set_err(EINVAL, "Socket of type AF_INET/AF_INET6 requires port argument");
return false;
} else if (_port == 0 || _port >= 65536) {
set_err(EINVAL, std_string::format("Invalid port [%d]", _port));
return false;
}
}
connect_host = _host;
connect_port = _port;
struct sockaddr *_target_addr = nullptr;
NameResolver::Context *ctx = resolve_context_;
NameResolver::Context _ctx{};
if (ctx == nullptr) {
ctx = &_ctx;
}
ctx->timeout = dns_timeout;
std::once_flag oc;
auto name_resolve_fn = [ctx, &oc, this](int type) -> bool {
ctx->type = type;
#ifdef SW_USE_OPENSSL
std::call_once(oc, [this]() {
if (ssl_context && !(socks5_proxy || http_proxy)) {
ssl_host_name = connect_host;
}
});
#endif
/* locked like wait_event */
read_co = write_co = Coroutine::get_current_safe();
ON_SCOPE_EXIT {
read_co = write_co = nullptr;
};
std::string addr = swoole_name_resolver_lookup(connect_host, ctx);
if (addr.empty()) {
set_err(swoole_get_last_error());
return false;
}
if (ctx->with_port) {
char delimiter = type == AF_INET6 ? '@' : ':';
auto port_pos = addr.find_first_of(delimiter);
if (port_pos != addr.npos) {
connect_port = std::stoi(addr.substr(port_pos + 1));
connect_host = addr.substr(0, port_pos);
return true;
}
}
connect_host = addr;
return true;
};
for (int i = 0; i < 2; i++) {
if (sock_domain == AF_INET) {
socket->info.addr.inet_v4.sin_family = AF_INET;
socket->info.addr.inet_v4.sin_port = htons(connect_port);
if (!inet_pton(AF_INET, connect_host.c_str(), &socket->info.addr.inet_v4.sin_addr)) {
if (!name_resolve_fn(AF_INET)) {
set_err(swoole_get_last_error(), swoole_strerror(swoole_get_last_error()));
return false;
}
continue;
} else {
socket->info.len = sizeof(socket->info.addr.inet_v4);
_target_addr = (struct sockaddr *) &socket->info.addr.inet_v4;
break;
}
} else if (sock_domain == AF_INET6) {
socket->info.addr.inet_v6.sin6_family = AF_INET6;
socket->info.addr.inet_v6.sin6_port = htons(connect_port);
if (!inet_pton(AF_INET6, connect_host.c_str(), &socket->info.addr.inet_v6.sin6_addr)) {
if (!name_resolve_fn(AF_INET6)) {
set_err(swoole_get_last_error());
return false;
}
continue;
} else {
socket->info.len = sizeof(socket->info.addr.inet_v6);
_target_addr = (struct sockaddr *) &socket->info.addr.inet_v6;
break;
}
} else if (sock_domain == AF_UNIX) {
if (connect_host.size() >= sizeof(socket->info.addr.un.sun_path)) {
set_err(EINVAL, "unix socket file is too large");
return false;
}
socket->info.addr.un.sun_family = AF_UNIX;
memcpy(&socket->info.addr.un.sun_path, connect_host.c_str(), connect_host.size());
socket->info.len = (socklen_t) (offsetof(struct sockaddr_un, sun_path) + connect_host.size());
_target_addr = (struct sockaddr *) &socket->info.addr.un;
break;
} else {
set_err(EINVAL, "unknown protocol[%d]");
return false;
}
}
if (_target_addr == nullptr) {
set_err(EINVAL, "bad target host");
return false;
}
if (connect(_target_addr, socket->info.len) == false) {
return false;
}
// socks5 proxy
if (socks5_proxy && socks5_handshake() == false) {
if (errCode == 0) {
set_err(SW_ERROR_SOCKS5_HANDSHAKE_FAILED);
}
return false;
}
// http proxy
if (http_proxy && !http_proxy->dont_handshake && http_proxy_handshake() == false) {
if (errCode == 0) {
set_err(SW_ERROR_HTTP_PROXY_HANDSHAKE_FAILED);
}
return false;
}
#ifdef SW_USE_OPENSSL
ssl_is_server = false;
if (ssl_context) {
if (!ssl_handshake()) {
if (errCode == 0) {
set_err(SW_ERROR_SSL_HANDSHAKE_FAILED);
}
return false;
}
}
#endif
return true;
}
bool Socket::check_liveness() {
if (is_closed()) {
set_err(EBADF);
return false;
}
if (!socket->check_liveness()) {
set_err(errno ? errno : ECONNRESET);
return false;
}
set_err(0);
return true;
}
ssize_t Socket::peek(void *__buf, size_t __n) {
ssize_t retval = socket->peek(__buf, __n, 0);
check_return_value(retval);
return retval;
}
bool Socket::poll(EventType type, double timeout) {
if (sw_unlikely(!is_available(type))) {
return -1;
}
TimerNode **timer_pp = type == SW_EVENT_READ ? &read_timer : &write_timer;
if (timeout == 0) {
timeout = type == SW_EVENT_READ ? read_timeout : write_timeout;
}
TimerController timer(timer_pp, timeout, this, timer_callback);
if (timer.start() && wait_event(type)) {
return true;
} else {
return false;
}
}
ssize_t Socket::recv(void *__buf, size_t __n) {
if (sw_unlikely(!is_available(SW_EVENT_READ))) {
return -1;
}
ssize_t retval;
TimerController timer(&read_timer, read_timeout, this, timer_callback);
do {
retval = socket->recv(__buf, __n, 0);
} while (retval < 0 && socket->catch_read_error(errno) == SW_WAIT && timer.start() && wait_event(SW_EVENT_READ));
check_return_value(retval);
return retval;
}
ssize_t Socket::send(const void *__buf, size_t __n) {
if (sw_unlikely(!is_available(SW_EVENT_WRITE))) {
return -1;
}
ssize_t retval;
TimerController timer(&write_timer, write_timeout, this, timer_callback);
do {
retval = socket->send(__buf, __n, 0);
} while (retval < 0 && socket->catch_write_error(errno) == SW_WAIT && timer.start() &&
wait_event(SW_EVENT_WRITE, &__buf, __n));
check_return_value(retval);
return retval;
}
ssize_t Socket::read(void *__buf, size_t __n) {
if (sw_unlikely(!is_available(SW_EVENT_READ))) {
return -1;
}
ssize_t retval;
TimerController timer(&read_timer, read_timeout, this, timer_callback);
do {
retval = socket->read(__buf, __n);
} while (retval < 0 && socket->catch_read_error(errno) == SW_WAIT && timer.start() && wait_event(SW_EVENT_READ));
check_return_value(retval);
return retval;
}
ssize_t Socket::recv_line(void *__buf, size_t maxlen) {
size_t n = 0;
ssize_t m = 0;
char *t = (char *) __buf;
*t = '\0';
while (*t != '\n' && *t != '\r' && n < maxlen) {
if (m > 0) {
t++;
n++;
}
if (n < maxlen) {
m = recv_with_buffer((void *) t, 1);
if (m < 0) {
return -1;
} else if (m == 0) {
return n > 0 ? n : 0;
}
}
}
if (n < maxlen) {
n++;
}
return n;
}
ssize_t Socket::recv_with_buffer(void *__buf, size_t __n) {
if (sw_unlikely(!is_available(SW_EVENT_READ))) {
return -1;
}
String *buffer = get_read_buffer();
size_t buffer_bytes = buffer->length - buffer->offset;
if (__n <= buffer_bytes) {
memcpy(__buf, buffer->str + buffer->offset, __n);
buffer->offset += __n;
return __n;
}
if (buffer_bytes > 0) {
memcpy(__buf, buffer->str + buffer->offset, buffer_bytes);
buffer->offset += buffer_bytes;
}
if ((size_t) buffer->offset >= buffer->size / 2) {
buffer->reduce(buffer->offset);
}
ssize_t retval = recv(buffer->str + buffer->length, buffer->size - buffer->length);
if (retval <= 0) {
return buffer_bytes > 0 ? buffer_bytes : retval;
}
buffer->length += retval;
size_t copy_bytes = SW_MIN(__n - buffer_bytes, buffer->length - buffer->offset);
memcpy((char *) __buf + buffer_bytes, buffer->str + buffer->offset, copy_bytes);
buffer->offset += copy_bytes;
return buffer_bytes + copy_bytes;
}
ssize_t Socket::write(const void *__buf, size_t __n) {
if (sw_unlikely(!is_available(SW_EVENT_WRITE))) {
return -1;
}
ssize_t retval;
TimerController timer(&write_timer, write_timeout, this, timer_callback);
do {
retval = socket->write((void *) __buf, __n);
} while (retval < 0 && socket->catch_write_error(errno) == SW_WAIT && timer.start() &&
wait_event(SW_EVENT_WRITE, &__buf, __n));
check_return_value(retval);
return retval;
}
ssize_t Socket::readv(network::IOVector *io_vector) {
if (sw_unlikely(!is_available(SW_EVENT_READ))) {
return -1;
}
ssize_t retval;
TimerController timer(&read_timer, read_timeout, this, timer_callback);
do {
retval = socket->readv(io_vector);
} while (retval < 0 && socket->catch_read_error(errno) == SW_WAIT && timer.start() && wait_event(SW_EVENT_READ));
check_return_value(retval);
return retval;
}
ssize_t Socket::readv_all(network::IOVector *io_vector) {
if (sw_unlikely(!is_available(SW_EVENT_READ))) {
return -1;
}
ssize_t retval, total_bytes = 0;
TimerController timer(&read_timer, read_timeout, this, timer_callback);
retval = socket->readv(io_vector);
swoole_trace_log(SW_TRACE_SOCKET, "readv %ld bytes, errno=%d", retval, errno);
if (retval < 0 && socket->catch_read_error(errno) != SW_WAIT) {
set_err(errno);
return retval;
}
if (retval == 0) {
return retval;
}
total_bytes += retval > 0 ? retval : 0;
if (io_vector->get_remain_count() == 0) {
// iov should not be modified, prevent valgrind from checking for invalid read
return retval;
}
EventBarrier barrier = [&io_vector, &total_bytes, &retval, this]() -> bool {
do {
retval = socket->readv(io_vector);
if (retval <= 0) {
break;
}
total_bytes += retval;
} while (retval > 0 && io_vector->get_remain_count() > 0);
return retval < 0 && socket->catch_read_error(errno) == SW_WAIT;
};
recv_barrier = &barrier;
if (timer.start() && wait_event(SW_EVENT_READ)) {
check_return_value(retval);
}
recv_barrier = nullptr;
return total_bytes;
}
ssize_t Socket::writev(network::IOVector *io_vector) {
if (sw_unlikely(!is_available(SW_EVENT_WRITE))) {
return -1;
}
ssize_t retval;
TimerController timer(&write_timer, write_timeout, this, timer_callback);
do {
retval = socket->writev(io_vector);
} while (retval < 0 && socket->catch_write_error(errno) == SW_WAIT && timer.start() && wait_event(SW_EVENT_WRITE));
check_return_value(retval);
return retval;
}
ssize_t Socket::writev_all(network::IOVector *io_vector) {
if (sw_unlikely(!is_available(SW_EVENT_WRITE))) {
return -1;
}
ssize_t retval, total_bytes = 0;
TimerController timer(&write_timer, write_timeout, this, timer_callback);
retval = socket->writev(io_vector);
swoole_trace_log(SW_TRACE_SOCKET, "writev %ld bytes, errno=%d", retval, errno);
if (retval < 0 && socket->catch_write_error(errno) != SW_WAIT) {
set_err(errno);
return retval;
}
if (retval == 0) {
return retval;
}
total_bytes += retval > 0 ? retval : 0;
if (io_vector->get_remain_count() == 0) {
// iov should not be modified, prevent valgrind from checking for invalid read
return retval;
}
EventBarrier barrier = [&io_vector, &total_bytes, &retval, this]() -> bool {
do {
retval = socket->writev(io_vector);
if (retval <= 0) {
break;
}
total_bytes += retval;
} while (retval > 0 && io_vector->get_remain_count() > 0);
return retval < 0 && socket->catch_write_error(errno) == SW_WAIT;
};
send_barrier = &barrier;
if (timer.start() && wait_event(SW_EVENT_WRITE)) {
check_return_value(retval);
}
send_barrier = nullptr;
return total_bytes;
}
ssize_t Socket::recv_all(void *__buf, size_t __n) {