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-rw-r--r--chardev/char-socket.c64
-rw-r--r--chardev/char.c8
-rw-r--r--qapi/char.json3
-rw-r--r--qemu-options.hx13
4 files changed, 77 insertions, 11 deletions
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index 0bbeb83ceb..eaa8e8b68f 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -26,6 +26,7 @@
#include "chardev/char.h"
#include "io/channel-socket.h"
#include "io/channel-tls.h"
+#include "io/channel-websock.h"
#include "io/net-listener.h"
#include "qemu/error-report.h"
#include "qemu/option.h"
@@ -68,6 +69,8 @@ typedef struct {
GSource *telnet_source;
TCPChardevTelnetInit *telnet_init;
+ bool is_websock;
+
GSource *reconnect_timer;
int64_t reconnect_time;
bool connect_err_reported;
@@ -394,7 +397,7 @@ static const char *qemu_chr_socket_protocol(SocketChardev *s)
if (s->is_telnet) {
return "telnet";
}
- return "tcp";
+ return s->is_websock ? "websocket" : "tcp";
}
static char *qemu_chr_socket_address(SocketChardev *s, const char *prefix)
@@ -714,6 +717,41 @@ cont:
}
+static void tcp_chr_websock_handshake(QIOTask *task, gpointer user_data)
+{
+ Chardev *chr = user_data;
+ SocketChardev *s = user_data;
+
+ if (qio_task_propagate_error(task, NULL)) {
+ tcp_chr_disconnect(chr);
+ } else {
+ if (s->do_telnetopt) {
+ tcp_chr_telnet_init(chr);
+ } else {
+ tcp_chr_connect(chr);
+ }
+ }
+}
+
+
+static void tcp_chr_websock_init(Chardev *chr)
+{
+ SocketChardev *s = SOCKET_CHARDEV(chr);
+ QIOChannelWebsock *wioc = NULL;
+ gchar *name;
+
+ wioc = qio_channel_websock_new_server(s->ioc);
+
+ name = g_strdup_printf("chardev-websocket-server-%s", chr->label);
+ qio_channel_set_name(QIO_CHANNEL(wioc), name);
+ g_free(name);
+ object_unref(OBJECT(s->ioc));
+ s->ioc = QIO_CHANNEL(wioc);
+
+ qio_channel_websock_handshake(wioc, tcp_chr_websock_handshake, chr, NULL);
+}
+
+
static void tcp_chr_tls_handshake(QIOTask *task,
gpointer user_data)
{
@@ -723,7 +761,9 @@ static void tcp_chr_tls_handshake(QIOTask *task,
if (qio_task_propagate_error(task, NULL)) {
tcp_chr_disconnect(chr);
} else {
- if (s->do_telnetopt) {
+ if (s->is_websock) {
+ tcp_chr_websock_init(chr);
+ } else if (s->do_telnetopt) {
tcp_chr_telnet_init(chr);
} else {
tcp_chr_connect(chr);
@@ -809,12 +849,12 @@ static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc)
if (s->tls_creds) {
tcp_chr_tls_init(chr);
+ } else if (s->is_websock) {
+ tcp_chr_websock_init(chr);
+ } else if (s->do_telnetopt) {
+ tcp_chr_telnet_init(chr);
} else {
- if (s->do_telnetopt) {
- tcp_chr_telnet_init(chr);
- } else {
- tcp_chr_connect(chr);
- }
+ tcp_chr_connect(chr);
}
return 0;
@@ -959,13 +999,20 @@ static void qmp_chardev_open_socket(Chardev *chr,
bool is_telnet = sock->has_telnet ? sock->telnet : false;
bool is_tn3270 = sock->has_tn3270 ? sock->tn3270 : false;
bool is_waitconnect = sock->has_wait ? sock->wait : false;
+ bool is_websock = sock->has_websocket ? sock->websocket : false;
int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
QIOChannelSocket *sioc = NULL;
SocketAddress *addr;
+ if (!is_listen && is_websock) {
+ error_setg(errp, "%s", "Websocket client is not implemented");
+ goto error;
+ }
+
s->is_listen = is_listen;
s->is_telnet = is_telnet;
s->is_tn3270 = is_tn3270;
+ s->is_websock = is_websock;
s->do_nodelay = do_nodelay;
if (sock->tls_creds) {
Object *creds;
@@ -1076,6 +1123,7 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
bool is_tn3270 = qemu_opt_get_bool(opts, "tn3270", false);
+ bool is_websock = qemu_opt_get_bool(opts, "websocket", false);
bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
const char *path = qemu_opt_get(opts, "path");
@@ -1124,6 +1172,8 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
sock->telnet = is_telnet;
sock->has_tn3270 = true;
sock->tn3270 = is_tn3270;
+ sock->has_websocket = true;
+ sock->websocket = is_websock;
sock->has_wait = true;
sock->wait = is_waitconnect;
sock->has_reconnect = qemu_opt_find(opts, "reconnect");
diff --git a/chardev/char.c b/chardev/char.c
index 7f07a1bfbd..79b05fb7b7 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -409,7 +409,8 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename,
}
if (strstart(filename, "tcp:", &p) ||
strstart(filename, "telnet:", &p) ||
- strstart(filename, "tn3270:", &p)) {
+ strstart(filename, "tn3270:", &p) ||
+ strstart(filename, "websocket:", &p)) {
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
host[0] = 0;
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
@@ -429,6 +430,8 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename,
qemu_opt_set(opts, "telnet", "on", &error_abort);
} else if (strstart(filename, "tn3270:", &p)) {
qemu_opt_set(opts, "tn3270", "on", &error_abort);
+ } else if (strstart(filename, "websocket:", &p)) {
+ qemu_opt_set(opts, "websocket", "on", &error_abort);
}
return opts;
}
@@ -861,6 +864,9 @@ QemuOptsList qemu_chardev_opts = {
.name = "tls-creds",
.type = QEMU_OPT_STRING,
},{
+ .name = "websocket",
+ .type = QEMU_OPT_BOOL,
+ },{
.name = "width",
.type = QEMU_OPT_NUMBER,
},{
diff --git a/qapi/char.json b/qapi/char.json
index b7b2a05766..79bac598a0 100644
--- a/qapi/char.json
+++ b/qapi/char.json
@@ -251,6 +251,8 @@
# sockets (default: false)
# @tn3270: enable tn3270 protocol on server
# sockets (default: false) (Since: 2.10)
+# @websocket: enable websocket protocol on server
+# sockets (default: false) (Since: 3.1)
# @reconnect: For a client socket, if a socket is disconnected,
# then attempt a reconnect after the given number of seconds.
# Setting this to zero disables this function. (default: 0)
@@ -265,6 +267,7 @@
'*nodelay' : 'bool',
'*telnet' : 'bool',
'*tn3270' : 'bool',
+ '*websocket' : 'bool',
'*reconnect' : 'int' },
'base': 'ChardevCommon' }
diff --git a/qemu-options.hx b/qemu-options.hx
index 08f8516a9a..38c7a978c1 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2414,9 +2414,9 @@ DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
"-chardev help\n"
"-chardev null,id=id[,mux=on|off][,logfile=PATH][,logappend=on|off]\n"
"-chardev socket,id=id[,host=host],port=port[,to=to][,ipv4][,ipv6][,nodelay][,reconnect=seconds]\n"
- " [,server][,nowait][,telnet][,reconnect=seconds][,mux=on|off]\n"
+ " [,server][,nowait][,telnet][,websocket][,reconnect=seconds][,mux=on|off]\n"
" [,logfile=PATH][,logappend=on|off][,tls-creds=ID] (tcp)\n"
- "-chardev socket,id=id,path=path[,server][,nowait][,telnet][,reconnect=seconds]\n"
+ "-chardev socket,id=id,path=path[,server][,nowait][,telnet][,websocket][,reconnect=seconds]\n"
" [,mux=on|off][,logfile=PATH][,logappend=on|off] (unix)\n"
"-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]\n"
" [,localport=localport][,ipv4][,ipv6][,mux=on|off]\n"
@@ -2544,7 +2544,7 @@ The available backends are:
A void device. This device will not emit any data, and will drop any data it
receives. The null backend does not take any options.
-@item -chardev socket,id=@var{id}[,@var{TCP options} or @var{unix options}][,server][,nowait][,telnet][,reconnect=@var{seconds}][,tls-creds=@var{id}]
+@item -chardev socket,id=@var{id}[,@var{TCP options} or @var{unix options}][,server][,nowait][,telnet][,websocket][,reconnect=@var{seconds}][,tls-creds=@var{id}]
Create a two-way stream socket, which can be either a TCP or a unix socket. A
unix socket will be created if @option{path} is specified. Behaviour is
@@ -2558,6 +2558,9 @@ connect to a listening socket.
@option{telnet} specifies that traffic on the socket should interpret telnet
escape sequences.
+@option{websocket} specifies that the socket uses WebSocket protocol for
+communication.
+
@option{reconnect} sets the timeout for reconnecting on non-server sockets when
the remote end goes away. qemu will delay this many seconds and then attempt
to reconnect. Zero disables reconnecting, and is the default.
@@ -3106,6 +3109,10 @@ MAGIC_SYSRQ sequence if you use a telnet that supports sending the break
sequence. Typically in unix telnet you do it with Control-] and then
type "send break" followed by pressing the enter key.
+@item websocket:@var{host}:@var{port},server[,nowait][,nodelay]
+The WebSocket protocol is used instead of raw tcp socket. The port acts as
+a WebSocket server. Client mode is not supported.
+
@item unix:@var{path}[,server][,nowait][,reconnect=@var{seconds}]
A unix domain socket is used instead of a tcp socket. The option works the
same as if you had specified @code{-serial tcp} except the unix domain socket
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-02 03:39:26 +0000