static grpc_error *parse_frame_slice(
grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing,
gpr_slice slice, int is_last) {
grpc_chttp2_stream_parsing *stream_parsing =
transport_parsing->incoming_stream;
grpc_error *err = transport_parsing->parser(
exec_ctx, transport_parsing->parser_data, transport_parsing,
stream_parsing, slice, is_last);
if (err == GRPC_ERROR_NONE) {
if (stream_parsing) {
grpc_chttp2_list_add_parsing_seen_stream(transport_parsing,
stream_parsing);
}
return GRPC_ERROR_NONE;
} else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) {
if (grpc_http_trace) {
const char *msg = grpc_error_string(err);
gpr_log(GPR_ERROR, "%s", msg);
grpc_error_free_string(msg);
}
grpc_chttp2_parsing_become_skip_parser(exec_ctx, transport_parsing);
if (stream_parsing) {
stream_parsing->forced_close_error = err;
gpr_slice_buffer_add(
&transport_parsing->qbuf,
grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id,
GRPC_CHTTP2_PROTOCOL_ERROR,
&stream_parsing->stats.outgoing));
} else {
GRPC_ERROR_UNREF(err);
}
}
return err;
}
static void on_handshake_done(grpc_exec_ctx *exec_ctx, grpc_endpoint *endpoint,
grpc_channel_args *args,
gpr_slice_buffer *read_buffer, void *user_data,
grpc_error *error) {
server_secure_connect *state = user_data;
if (error != GRPC_ERROR_NONE) {
const char *error_str = grpc_error_string(error);
gpr_log(GPR_ERROR, "Handshaking failed: %s", error_str);
grpc_error_free_string(error_str);
GRPC_ERROR_UNREF(error);
grpc_channel_args_destroy(args);
gpr_free(read_buffer);
grpc_handshake_manager_shutdown(exec_ctx, state->handshake_mgr);
grpc_handshake_manager_destroy(exec_ctx, state->handshake_mgr);
state_unref(state->state);
gpr_free(state);
return;
}
grpc_handshake_manager_destroy(exec_ctx, state->handshake_mgr);
state->handshake_mgr = NULL;
// TODO(roth, jboeuf): Convert security connector handshaking to use new
// handshake API, and then move the code from on_secure_handshake_done()
// into this function.
state->args = args;
grpc_server_security_connector_do_handshake(
exec_ctx, state->state->sc, state->acceptor, endpoint, read_buffer,
state->deadline, on_secure_handshake_done, state);
}
// If the handshake failed or we're shutting down, clean up and invoke the
// callback with the error.
static void security_handshake_failed_locked(grpc_exec_ctx *exec_ctx,
security_handshaker *h,
grpc_error *error) {
if (error == GRPC_ERROR_NONE) {
// If we were shut down after the handshake succeeded but before an
// endpoint callback was invoked, we need to generate our own error.
error = GRPC_ERROR_CREATE("Handshaker shutdown");
}
const char *msg = grpc_error_string(error);
gpr_log(GPR_DEBUG, "Security handshake failed: %s", msg);
grpc_error_free_string(msg);
if (!h->shutdown) {
// TODO(ctiller): It is currently necessary to shutdown endpoints
// before destroying them, even if we know that there are no
// pending read/write callbacks. This should be fixed, at which
// point this can be removed.
grpc_endpoint_shutdown(exec_ctx, h->args->endpoint);
// Not shutting down, so the write failed. Clean up before
// invoking the callback.
cleanup_args_for_failure_locked(h);
// Set shutdown to true so that subsequent calls to
// security_handshaker_shutdown() do nothing.
h->shutdown = true;
}
// Invoke callback.
grpc_exec_ctx_sched(exec_ctx, h->on_handshake_done, error, NULL);
}
static void tcp_handle_write(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
grpc_error *error) {
grpc_tcp *tcp = (grpc_tcp *)arg;
grpc_closure *cb;
if (error != GRPC_ERROR_NONE) {
cb = tcp->write_cb;
tcp->write_cb = NULL;
cb->cb(exec_ctx, cb->cb_arg, error);
TCP_UNREF(exec_ctx, tcp, "write");
return;
}
if (!tcp_flush(tcp, &error)) {
if (grpc_tcp_trace) {
gpr_log(GPR_DEBUG, "write: delayed");
}
grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure);
} else {
cb = tcp->write_cb;
tcp->write_cb = NULL;
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "write: %s", str);
grpc_error_free_string(str);
}
grpc_closure_run(exec_ctx, cb, error);
TCP_UNREF(exec_ctx, tcp, "write");
}
}
static void security_handshake_done(grpc_exec_ctx *exec_ctx,
grpc_security_handshake *h,
grpc_error *error) {
grpc_timer_cancel(exec_ctx, &h->timer);
if (!h->is_client_side) {
security_connector_remove_handshake(h);
}
if (error == GRPC_ERROR_NONE) {
h->cb(exec_ctx, h->user_data, GRPC_SECURITY_OK, h->secure_endpoint,
h->auth_context);
} else {
const char *msg = grpc_error_string(error);
gpr_log(GPR_ERROR, "Security handshake failed: %s", msg);
grpc_error_free_string(msg);
if (h->secure_endpoint != NULL) {
grpc_endpoint_shutdown(exec_ctx, h->secure_endpoint);
grpc_endpoint_destroy(exec_ctx, h->secure_endpoint);
} else {
grpc_endpoint_destroy(exec_ctx, h->wrapped_endpoint);
}
h->cb(exec_ctx, h->user_data, GRPC_SECURITY_ERROR, NULL, NULL);
}
unref_handshake(h);
GRPC_ERROR_UNREF(error);
}
static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
size_t i;
int port = 0;
portreq *pr = arg;
int failed = 0;
grpc_httpcli_response *response = &pr->response;
if (error != GRPC_ERROR_NONE) {
failed = 1;
const char *msg = grpc_error_string(error);
gpr_log(GPR_DEBUG, "failed port pick from server: retrying [%s]", msg);
grpc_error_free_string(msg);
} else if (response->status != 200) {
failed = 1;
gpr_log(GPR_DEBUG, "failed port pick from server: status=%d",
response->status);
}
if (failed) {
grpc_httpcli_request req;
memset(&req, 0, sizeof(req));
GPR_ASSERT(pr->retries < 10);
gpr_sleep_until(gpr_time_add(
gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_millis(
(int64_t)(1000.0 * (1 + pow(1.3, pr->retries) * rand() / RAND_MAX)),
GPR_TIMESPAN)));
pr->retries++;
req.host = pr->server;
req.http.path = "/get";
grpc_http_response_destroy(&pr->response);
memset(&pr->response, 0, sizeof(pr->response));
grpc_resource_quota *resource_quota =
grpc_resource_quota_create("port_server_client/pick_retry");
grpc_httpcli_get(exec_ctx, pr->ctx, &pr->pops, resource_quota, &req,
GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
grpc_closure_create(got_port_from_server, pr),
&pr->response);
grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
return;
}
GPR_ASSERT(response);
GPR_ASSERT(response->status == 200);
for (i = 0; i < response->body_length; i++) {
GPR_ASSERT(response->body[i] >= '0' && response->body[i] <= '9');
port = port * 10 + response->body[i] - '0';
}
GPR_ASSERT(port > 1024);
gpr_mu_lock(pr->mu);
pr->port = port;
GRPC_LOG_IF_ERROR(
"pollset_kick",
grpc_pollset_kick(grpc_polling_entity_pollset(&pr->pops), NULL));
gpr_mu_unlock(pr->mu);
}
// Helper function to shut down the proxy connection.
// Does NOT take ownership of a reference to error.
static void proxy_connection_failed(grpc_exec_ctx* exec_ctx,
proxy_connection* conn, bool is_client,
const char* prefix, grpc_error* error) {
const char* msg = grpc_error_string(error);
gpr_log(GPR_INFO, "%s: %s", prefix, msg);
grpc_error_free_string(msg);
grpc_endpoint_shutdown(exec_ctx, conn->client_endpoint);
if (conn->server_endpoint != NULL)
grpc_endpoint_shutdown(exec_ctx, conn->server_endpoint);
proxy_connection_unref(exec_ctx, conn);
}
static void hs_on_recv(grpc_exec_ctx *exec_ctx, void *user_data,
grpc_error *err) {
grpc_call_element *elem = user_data;
call_data *calld = elem->call_data;
if (err == GRPC_ERROR_NONE) {
server_filter_args a;
a.elem = elem;
a.exec_ctx = exec_ctx;
grpc_metadata_batch_filter(calld->recv_initial_metadata, server_filter, &a);
/* Have we seen the required http2 transport headers?
(:method, :scheme, content-type, with :path and :authority covered
at the channel level right now) */
if (calld->seen_method && calld->seen_scheme && calld->seen_te_trailers &&
calld->seen_path && calld->seen_authority) {
/* do nothing */
} else {
err = GRPC_ERROR_CREATE("Bad incoming HTTP headers");
if (!calld->seen_path) {
err = grpc_error_add_child(err,
GRPC_ERROR_CREATE("Missing :path header"));
}
if (!calld->seen_authority) {
err = grpc_error_add_child(
err, GRPC_ERROR_CREATE("Missing :authority header"));
}
if (!calld->seen_method) {
err = grpc_error_add_child(err,
GRPC_ERROR_CREATE("Missing :method header"));
}
if (!calld->seen_scheme) {
err = grpc_error_add_child(err,
GRPC_ERROR_CREATE("Missing :scheme header"));
}
if (!calld->seen_te_trailers) {
err = grpc_error_add_child(
err, GRPC_ERROR_CREATE("Missing te: trailers header"));
}
/* Error this call out */
if (grpc_http_trace) {
const char *error_str = grpc_error_string(err);
gpr_log(GPR_ERROR, "Invalid http2 headers: %s", error_str);
grpc_error_free_string(error_str);
}
grpc_call_element_send_cancel(exec_ctx, elem);
}
} else {
GRPC_ERROR_REF(err);
}
calld->on_done_recv->cb(exec_ctx, calld->on_done_recv->cb_arg, err);
GRPC_ERROR_UNREF(err);
}
static void tcp_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
grpc_slice_buffer *buf, grpc_closure *cb) {
grpc_tcp *tcp = (grpc_tcp *)ep;
grpc_error *error = GRPC_ERROR_NONE;
if (grpc_tcp_trace) {
size_t i;
for (i = 0; i < buf->count; i++) {
char *data =
grpc_dump_slice(buf->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
gpr_log(GPR_DEBUG, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data);
gpr_free(data);
}
}
GPR_TIMER_BEGIN("tcp_write", 0);
GPR_ASSERT(tcp->write_cb == NULL);
if (buf->length == 0) {
GPR_TIMER_END("tcp_write", 0);
grpc_exec_ctx_sched(exec_ctx, cb,
grpc_fd_is_shutdown(tcp->em_fd)
? tcp_annotate_error(GRPC_ERROR_CREATE("EOF"), tcp)
: GRPC_ERROR_NONE,
NULL);
return;
}
tcp->outgoing_buffer = buf;
tcp->outgoing_slice_idx = 0;
tcp->outgoing_byte_idx = 0;
if (!tcp_flush(tcp, &error)) {
TCP_REF(tcp, "write");
tcp->write_cb = cb;
if (grpc_tcp_trace) {
gpr_log(GPR_DEBUG, "write: delayed");
}
grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure);
} else {
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "write: %s", str);
grpc_error_free_string(str);
}
grpc_exec_ctx_sched(exec_ctx, cb, error, NULL);
}
GPR_TIMER_END("tcp_write", 0);
}
int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
grpc_server_credentials *creds) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_error *err = GRPC_ERROR_NONE;
grpc_server_security_connector *sc = NULL;
int port_num = 0;
GRPC_API_TRACE(
"grpc_server_add_secure_http2_port("
"server=%p, addr=%s, creds=%p)",
3, (server, addr, creds));
// Create security context.
if (creds == NULL) {
err = GRPC_ERROR_CREATE(
"No credentials specified for secure server port (creds==NULL)");
goto done;
}
grpc_security_status status =
grpc_server_credentials_create_security_connector(&exec_ctx, creds, &sc);
if (status != GRPC_SECURITY_OK) {
char *msg;
gpr_asprintf(&msg,
"Unable to create secure server with credentials of type %s.",
creds->type);
err = grpc_error_set_int(GRPC_ERROR_CREATE(msg),
GRPC_ERROR_INT_SECURITY_STATUS, status);
gpr_free(msg);
goto done;
}
// Create channel args.
grpc_arg args_to_add[2];
args_to_add[0] = grpc_server_credentials_to_arg(creds);
args_to_add[1] = grpc_security_connector_to_arg(&sc->base);
grpc_channel_args *args =
grpc_channel_args_copy_and_add(grpc_server_get_channel_args(server),
args_to_add, GPR_ARRAY_SIZE(args_to_add));
// Add server port.
err = grpc_chttp2_server_add_port(&exec_ctx, server, addr, args, &port_num);
done:
if (sc != NULL) {
GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &sc->base, "server");
}
grpc_exec_ctx_finish(&exec_ctx);
if (err != GRPC_ERROR_NONE) {
const char *msg = grpc_error_string(err);
gpr_log(GPR_ERROR, "%s", msg);
grpc_error_free_string(msg);
GRPC_ERROR_UNREF(err);
}
return port_num;
}
static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
dns_resolver *r = arg;
grpc_channel_args *result = NULL;
gpr_mu_lock(&r->mu);
GPR_ASSERT(r->resolving);
r->resolving = false;
if (r->addresses != NULL) {
grpc_lb_addresses *addresses = grpc_lb_addresses_create(
r->addresses->naddrs, NULL /* user_data_vtable */);
for (size_t i = 0; i < r->addresses->naddrs; ++i) {
grpc_lb_addresses_set_address(
addresses, i, &r->addresses->addrs[i].addr,
r->addresses->addrs[i].len, false /* is_balancer */,
NULL /* balancer_name */, NULL /* user_data */);
}
grpc_arg new_arg = grpc_lb_addresses_create_channel_arg(addresses);
result = grpc_channel_args_copy_and_add(r->channel_args, &new_arg, 1);
grpc_resolved_addresses_destroy(r->addresses);
grpc_lb_addresses_destroy(addresses);
} else {
gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now);
gpr_timespec timeout = gpr_time_sub(next_try, now);
const char *msg = grpc_error_string(error);
gpr_log(GPR_DEBUG, "dns resolution failed: %s", msg);
grpc_error_free_string(msg);
GPR_ASSERT(!r->have_retry_timer);
r->have_retry_timer = true;
GRPC_RESOLVER_REF(&r->base, "retry-timer");
if (gpr_time_cmp(timeout, gpr_time_0(timeout.clock_type)) > 0) {
gpr_log(GPR_DEBUG, "retrying in %" PRId64 ".%09d seconds", timeout.tv_sec,
timeout.tv_nsec);
} else {
gpr_log(GPR_DEBUG, "retrying immediately");
}
grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r,
now);
}
if (r->resolved_result != NULL) {
grpc_channel_args_destroy(r->resolved_result);
}
r->resolved_result = result;
r->resolved_version++;
dns_maybe_finish_next_locked(exec_ctx, r);
gpr_mu_unlock(&r->mu);
GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "dns-resolving");
}
static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
grpc_handshaker_args *args = arg;
on_done_closure *c = args->user_data;
if (error != GRPC_ERROR_NONE) {
const char *msg = grpc_error_string(error);
gpr_log(GPR_ERROR, "Secure transport setup failed: %s", msg);
grpc_error_free_string(msg);
c->func(exec_ctx, c->arg, NULL);
} else {
grpc_channel_args_destroy(args->args);
grpc_slice_buffer_destroy(args->read_buffer);
gpr_free(args->read_buffer);
c->func(exec_ctx, c->arg, args->endpoint);
}
grpc_handshake_manager_destroy(exec_ctx, c->handshake_mgr);
gpr_free(c);
}
/* Queue a GRPC_OP_COMPLETED operation */
void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc,
void *tag, grpc_error *error,
void (*done)(grpc_exec_ctx *exec_ctx, void *done_arg,
grpc_cq_completion *storage),
void *done_arg, grpc_cq_completion *storage) {
int shutdown;
int i;
grpc_pollset_worker *pluck_worker;
#ifndef NDEBUG
int found = 0;
#endif
GPR_TIMER_BEGIN("grpc_cq_end_op", 0);
if (grpc_api_trace ||
(grpc_trace_operation_failures && error != GRPC_ERROR_NONE)) {
const char *errmsg = grpc_error_string(error);
GRPC_API_TRACE(
"grpc_cq_end_op(exec_ctx=%p, cc=%p, tag=%p, error=%s, done=%p, "
"done_arg=%p, storage=%p)",
7, (exec_ctx, cc, tag, errmsg, done, done_arg, storage));
if (grpc_trace_operation_failures) {
gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);
}
grpc_error_free_string(errmsg);
}
storage->tag = tag;
storage->done = done;
storage->done_arg = done_arg;
storage->next = ((uintptr_t)&cc->completed_head) |
((uintptr_t)(error == GRPC_ERROR_NONE));
gpr_mu_lock(cc->mu);
#ifndef NDEBUG
for (i = 0; i < (int)cc->outstanding_tag_count; i++) {
if (cc->outstanding_tags[i] == tag) {
cc->outstanding_tag_count--;
GPR_SWAP(void *, cc->outstanding_tags[i],
cc->outstanding_tags[cc->outstanding_tag_count]);
found = 1;
break;
}
}
static void call_read_cb(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp,
grpc_error *error) {
grpc_closure *cb = tcp->read_cb;
if (grpc_tcp_trace) {
size_t i;
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "read: error=%s", str);
grpc_error_free_string(str);
for (i = 0; i < tcp->incoming_buffer->count; i++) {
char *dump = grpc_dump_slice(tcp->incoming_buffer->slices[i],
GPR_DUMP_HEX | GPR_DUMP_ASCII);
gpr_log(GPR_DEBUG, "READ %p (peer=%s): %s", tcp, tcp->peer_string, dump);
gpr_free(dump);
}
}
tcp->read_cb = NULL;
tcp->incoming_buffer = NULL;
grpc_closure_run(exec_ctx, cb, error);
}
static void tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
int done;
async_connect *ac = acp;
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_alarm: error=%s", ac->addr_str,
str);
grpc_error_free_string(str);
}
gpr_mu_lock(&ac->mu);
if (ac->fd != NULL) {
grpc_fd_shutdown(exec_ctx, ac->fd);
}
done = (--ac->refs == 0);
gpr_mu_unlock(&ac->mu);
if (done) {
gpr_mu_destroy(&ac->mu);
gpr_free(ac->addr_str);
grpc_channel_args_destroy(ac->channel_args);
gpr_free(ac);
}
}
void grpc_connectivity_state_set(grpc_exec_ctx *exec_ctx,
grpc_connectivity_state_tracker *tracker,
grpc_connectivity_state state,
grpc_error *error, const char *reason) {
grpc_connectivity_state_watcher *w;
if (grpc_connectivity_state_trace) {
const char *error_string = grpc_error_string(error);
gpr_log(GPR_DEBUG, "SET: %p %s: %s --> %s [%s] error=%p %s", tracker,
tracker->name, grpc_connectivity_state_name(tracker->current_state),
grpc_connectivity_state_name(state), reason, error, error_string);
grpc_error_free_string(error_string);
}
switch (state) {
case GRPC_CHANNEL_CONNECTING:
case GRPC_CHANNEL_IDLE:
case GRPC_CHANNEL_READY:
GPR_ASSERT(error == GRPC_ERROR_NONE);
break;
case GRPC_CHANNEL_SHUTDOWN:
case GRPC_CHANNEL_TRANSIENT_FAILURE:
GPR_ASSERT(error != GRPC_ERROR_NONE);
break;
}
GRPC_ERROR_UNREF(tracker->current_error);
tracker->current_error = error;
if (tracker->current_state == state) {
return;
}
GPR_ASSERT(tracker->current_state != GRPC_CHANNEL_SHUTDOWN);
tracker->current_state = state;
while ((w = tracker->watchers) != NULL) {
*w->current = tracker->current_state;
tracker->watchers = w->next;
grpc_exec_ctx_sched(exec_ctx, w->notify,
GRPC_ERROR_REF(tracker->current_error), NULL);
gpr_free(w);
}
}
static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
async_connect *ac = acp;
int so_error = 0;
socklen_t so_error_size;
int err;
int done;
grpc_endpoint **ep = ac->ep;
grpc_closure *closure = ac->closure;
grpc_fd *fd;
GRPC_ERROR_REF(error);
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_writable: error=%s",
ac->addr_str, str);
grpc_error_free_string(str);
}
gpr_mu_lock(&ac->mu);
GPR_ASSERT(ac->fd);
fd = ac->fd;
ac->fd = NULL;
gpr_mu_unlock(&ac->mu);
grpc_timer_cancel(exec_ctx, &ac->alarm);
gpr_mu_lock(&ac->mu);
if (error != GRPC_ERROR_NONE) {
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, "Timeout occurred");
goto finish;
}
do {
so_error_size = sizeof(so_error);
err = getsockopt(grpc_fd_wrapped_fd(fd), SOL_SOCKET, SO_ERROR, &so_error,
&so_error_size);
} while (err < 0 && errno == EINTR);
if (err < 0) {
error = GRPC_OS_ERROR(errno, "getsockopt");
goto finish;
}
switch (so_error) {
case 0:
grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd);
*ep = grpc_tcp_client_create_from_fd(exec_ctx, fd, ac->channel_args,
ac->addr_str);
fd = NULL;
break;
case ENOBUFS:
/* We will get one of these errors if we have run out of
memory in the kernel for the data structures allocated
when you connect a socket. If this happens it is very
likely that if we wait a little bit then try again the
connection will work (since other programs or this
program will close their network connections and free up
memory). This does _not_ indicate that there is anything
wrong with the server we are connecting to, this is a
local problem.
If you are looking at this code, then chances are that
your program or another program on the same computer
opened too many network connections. The "easy" fix:
don't do that! */
gpr_log(GPR_ERROR, "kernel out of buffers");
gpr_mu_unlock(&ac->mu);
grpc_fd_notify_on_write(exec_ctx, fd, &ac->write_closure);
return;
case ECONNREFUSED:
/* This error shouldn't happen for anything other than connect(). */
error = GRPC_OS_ERROR(so_error, "connect");
break;
default:
/* We don't really know which syscall triggered the problem here,
so punt by reporting getsockopt(). */
error = GRPC_OS_ERROR(so_error, "getsockopt(SO_ERROR)");
break;
}
finish:
if (fd != NULL) {
grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd);
grpc_fd_orphan(exec_ctx, fd, NULL, NULL, "tcp_client_orphan");
fd = NULL;
}
done = (--ac->refs == 0);
gpr_mu_unlock(&ac->mu);
if (error != GRPC_ERROR_NONE) {
error = grpc_error_set_str(error, GRPC_ERROR_STR_DESCRIPTION,
"Failed to connect to remote host");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_TARGET_ADDRESS, ac->addr_str);
}
if (done) {
gpr_mu_destroy(&ac->mu);
gpr_free(ac->addr_str);
grpc_channel_args_destroy(ac->channel_args);
gpr_free(ac);
}
grpc_exec_ctx_sched(exec_ctx, closure, error, NULL);
}
char *grpc_transport_stream_op_string(grpc_transport_stream_op *op) {
char *tmp;
char *out;
gpr_strvec b;
gpr_strvec_init(&b);
gpr_strvec_add(
&b, gpr_strdup(op->covered_by_poller ? "[COVERED]" : "[UNCOVERED]"));
if (op->send_initial_metadata != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_strvec_add(&b, gpr_strdup("SEND_INITIAL_METADATA{"));
put_metadata_list(&b, *op->send_initial_metadata);
gpr_strvec_add(&b, gpr_strdup("}"));
}
if (op->send_message != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_asprintf(&tmp, "SEND_MESSAGE:flags=0x%08x:len=%d",
op->send_message->flags, op->send_message->length);
gpr_strvec_add(&b, tmp);
}
if (op->send_trailing_metadata != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_strvec_add(&b, gpr_strdup("SEND_TRAILING_METADATA{"));
put_metadata_list(&b, *op->send_trailing_metadata);
gpr_strvec_add(&b, gpr_strdup("}"));
}
if (op->recv_initial_metadata != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_strvec_add(&b, gpr_strdup("RECV_INITIAL_METADATA"));
}
if (op->recv_message != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_strvec_add(&b, gpr_strdup("RECV_MESSAGE"));
}
if (op->recv_trailing_metadata != NULL) {
gpr_strvec_add(&b, gpr_strdup(" "));
gpr_strvec_add(&b, gpr_strdup("RECV_TRAILING_METADATA"));
}
if (op->cancel_error != GRPC_ERROR_NONE) {
gpr_strvec_add(&b, gpr_strdup(" "));
const char *msg = grpc_error_string(op->cancel_error);
gpr_asprintf(&tmp, "CANCEL:%s", msg);
grpc_error_free_string(msg);
gpr_strvec_add(&b, tmp);
}
if (op->close_error != GRPC_ERROR_NONE) {
gpr_strvec_add(&b, gpr_strdup(" "));
const char *msg = grpc_error_string(op->close_error);
gpr_asprintf(&tmp, "CLOSE:%s", msg);
grpc_error_free_string(msg);
gpr_strvec_add(&b, tmp);
}
out = gpr_strvec_flatten(&b, NULL);
gpr_strvec_destroy(&b);
return out;
}
char *grpc_transport_op_string(grpc_transport_op *op) {
char *tmp;
char *out;
bool first = true;
gpr_strvec b;
gpr_strvec_init(&b);
if (op->on_connectivity_state_change != NULL) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
if (op->connectivity_state != NULL) {
gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:from=%s",
op->on_connectivity_state_change,
grpc_connectivity_state_name(*op->connectivity_state));
gpr_strvec_add(&b, tmp);
} else {
gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:unsubscribe",
op->on_connectivity_state_change);
gpr_strvec_add(&b, tmp);
}
}
if (op->disconnect_with_error != GRPC_ERROR_NONE) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
const char *err = grpc_error_string(op->disconnect_with_error);
gpr_asprintf(&tmp, "DISCONNECT:%s", err);
gpr_strvec_add(&b, tmp);
grpc_error_free_string(err);
}
if (op->send_goaway) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
char *msg = op->goaway_message == NULL
? "null"
: grpc_dump_slice(*op->goaway_message,
GPR_DUMP_ASCII | GPR_DUMP_HEX);
gpr_asprintf(&tmp, "SEND_GOAWAY:status=%d:msg=%s", op->goaway_status, msg);
if (op->goaway_message != NULL) gpr_free(msg);
gpr_strvec_add(&b, tmp);
}
if (op->set_accept_stream) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
gpr_asprintf(&tmp, "SET_ACCEPT_STREAM:%p(%p,...)", op->set_accept_stream_fn,
op->set_accept_stream_user_data);
gpr_strvec_add(&b, tmp);
}
if (op->bind_pollset != NULL) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET"));
}
if (op->bind_pollset_set != NULL) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET_SET"));
}
if (op->send_ping != NULL) {
if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
first = false;
gpr_strvec_add(&b, gpr_strdup("SEND_PING"));
}
out = gpr_strvec_flatten(&b, NULL);
gpr_strvec_destroy(&b);
return out;
}
int grpc_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
grpc_resolved_addresses *resolved = NULL;
grpc_tcp_server *tcp = NULL;
size_t i;
size_t count = 0;
int port_num = -1;
int port_temp;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_error *err = GRPC_ERROR_NONE;
GRPC_API_TRACE("grpc_server_add_insecure_http2_port(server=%p, addr=%s)", 2,
(server, addr));
grpc_error **errors = NULL;
err = grpc_blocking_resolve_address(addr, "https", &resolved);
if (err != GRPC_ERROR_NONE) {
goto error;
}
err = grpc_tcp_server_create(NULL, &tcp);
if (err != GRPC_ERROR_NONE) {
goto error;
}
const size_t naddrs = resolved->naddrs;
errors = gpr_malloc(sizeof(*errors) * naddrs);
for (i = 0; i < naddrs; i++) {
errors[i] = grpc_tcp_server_add_port(
tcp, (struct sockaddr *)&resolved->addrs[i].addr,
resolved->addrs[i].len, &port_temp);
if (errors[i] == GRPC_ERROR_NONE) {
if (port_num == -1) {
port_num = port_temp;
} else {
GPR_ASSERT(port_num == port_temp);
}
count++;
}
}
if (count == 0) {
char *msg;
gpr_asprintf(&msg, "No address added out of total %" PRIuPTR " resolved",
naddrs);
err = GRPC_ERROR_CREATE_REFERENCING(msg, errors, naddrs);
gpr_free(msg);
goto error;
} else if (count != naddrs) {
char *msg;
gpr_asprintf(&msg, "Only %" PRIuPTR
" addresses added out of total %" PRIuPTR " resolved",
count, naddrs);
err = GRPC_ERROR_CREATE_REFERENCING(msg, errors, naddrs);
gpr_free(msg);
const char *warning_message = grpc_error_string(err);
gpr_log(GPR_INFO, "WARNING: %s", warning_message);
grpc_error_free_string(warning_message);
/* we managed to bind some addresses: continue */
}
grpc_resolved_addresses_destroy(resolved);
/* Register with the server only upon success */
grpc_server_add_listener(&exec_ctx, server, tcp, start, destroy);
goto done;
/* Error path: cleanup and return */
error:
GPR_ASSERT(err != GRPC_ERROR_NONE);
if (resolved) {
grpc_resolved_addresses_destroy(resolved);
}
if (tcp) {
grpc_tcp_server_unref(&exec_ctx, tcp);
}
port_num = 0;
const char *msg = grpc_error_string(err);
gpr_log(GPR_ERROR, "%s", msg);
grpc_error_free_string(msg);
GRPC_ERROR_UNREF(err);
done:
grpc_exec_ctx_finish(&exec_ctx);
if (errors != NULL) {
for (i = 0; i < naddrs; i++) {
GRPC_ERROR_UNREF(errors[i]);
}
}
gpr_free(errors);
return port_num;
}
void grpc_chttp2_publish_reads(
grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global,
grpc_chttp2_transport_parsing *transport_parsing) {
grpc_chttp2_stream_global *stream_global;
grpc_chttp2_stream_parsing *stream_parsing;
int was_zero;
int is_zero;
/* transport_parsing->last_incoming_stream_id is used as
last-grpc_chttp2_stream-id when
sending GOAWAY frame.
https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-6.8
says that last-grpc_chttp2_stream-id is peer-initiated grpc_chttp2_stream
ID. So,
since we don't have server pushed streams, client should send
GOAWAY last-grpc_chttp2_stream-id=0 in this case. */
if (!transport_parsing->is_client) {
transport_global->last_incoming_stream_id =
transport_parsing->last_incoming_stream_id;
}
/* update global settings */
if (transport_parsing->settings_updated) {
memcpy(transport_global->settings[GRPC_PEER_SETTINGS],
transport_parsing->settings, sizeof(transport_parsing->settings));
transport_parsing->settings_updated = 0;
}
/* update settings based on ack if received */
if (transport_parsing->settings_ack_received) {
memcpy(transport_global->settings[GRPC_ACKED_SETTINGS],
transport_global->settings[GRPC_SENT_SETTINGS],
GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
transport_parsing->settings_ack_received = 0;
transport_global->sent_local_settings = 0;
}
/* move goaway to the global state if we received one (it will be
published later */
if (transport_parsing->goaway_received) {
grpc_chttp2_add_incoming_goaway(exec_ctx, transport_global,
(uint32_t)transport_parsing->goaway_error,
transport_parsing->goaway_text);
transport_parsing->goaway_text = gpr_empty_slice();
transport_parsing->goaway_received = 0;
}
/* propagate flow control tokens to global state */
was_zero = transport_global->outgoing_window <= 0;
GRPC_CHTTP2_FLOW_MOVE_TRANSPORT("parsed", transport_global, outgoing_window,
transport_parsing, outgoing_window);
is_zero = transport_global->outgoing_window <= 0;
if (was_zero && !is_zero) {
while (grpc_chttp2_list_pop_stalled_by_transport(transport_global,
&stream_global)) {
grpc_chttp2_become_writable(transport_global, stream_global);
}
}
if (transport_parsing->incoming_window <
transport_global->connection_window_target * 3 / 4) {
int64_t announce_bytes = transport_global->connection_window_target -
transport_parsing->incoming_window;
GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", transport_global,
announce_incoming_window, announce_bytes);
GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", transport_parsing,
incoming_window, announce_bytes);
}
/* for each stream that saw an update, fixup global state */
while (grpc_chttp2_list_pop_parsing_seen_stream(
transport_global, transport_parsing, &stream_global, &stream_parsing)) {
if (stream_parsing->seen_error) {
stream_global->seen_error = true;
stream_global->exceeded_metadata_size =
stream_parsing->exceeded_metadata_size;
grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
}
/* flush stats to global stream state */
grpc_transport_move_stats(&stream_parsing->stats, &stream_global->stats);
/* update outgoing flow control window */
was_zero = stream_global->outgoing_window <= 0;
GRPC_CHTTP2_FLOW_MOVE_STREAM("parsed", transport_global, stream_global,
outgoing_window, stream_parsing,
outgoing_window);
is_zero = stream_global->outgoing_window <= 0;
if (was_zero && !is_zero) {
grpc_chttp2_become_writable(transport_global, stream_global);
}
stream_global->max_recv_bytes -= (uint32_t)GPR_MIN(
stream_global->max_recv_bytes, stream_parsing->received_bytes);
stream_parsing->received_bytes = 0;
/* publish incoming stream ops */
if (stream_global->incoming_frames.tail != NULL) {
stream_global->incoming_frames.tail->is_tail = 0;
}
if (stream_parsing->data_parser.incoming_frames.head != NULL) {
grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
}
grpc_chttp2_incoming_frame_queue_merge(
&stream_global->incoming_frames,
&stream_parsing->data_parser.incoming_frames);
if (stream_global->incoming_frames.tail != NULL) {
stream_global->incoming_frames.tail->is_tail = 1;
}
if (!stream_global->published_initial_metadata &&
stream_parsing->got_metadata_on_parse[0]) {
stream_parsing->got_metadata_on_parse[0] = 0;
stream_global->published_initial_metadata = 1;
GPR_SWAP(grpc_chttp2_incoming_metadata_buffer,
stream_parsing->metadata_buffer[0],
stream_global->received_initial_metadata);
grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
}
if (!stream_global->published_trailing_metadata &&
stream_parsing->got_metadata_on_parse[1]) {
stream_parsing->got_metadata_on_parse[1] = 0;
stream_global->published_trailing_metadata = 1;
GPR_SWAP(grpc_chttp2_incoming_metadata_buffer,
stream_parsing->metadata_buffer[1],
stream_global->received_trailing_metadata);
grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
}
if (stream_parsing->forced_close_error != GRPC_ERROR_NONE) {
intptr_t reason;
bool has_reason = grpc_error_get_int(stream_parsing->forced_close_error,
GRPC_ERROR_INT_HTTP2_ERROR, &reason);
if (has_reason && reason != GRPC_CHTTP2_NO_ERROR) {
grpc_status_code status_code =
has_reason
? grpc_chttp2_http2_error_to_grpc_status(
(grpc_chttp2_error_code)reason, stream_global->deadline)
: GRPC_STATUS_INTERNAL;
const char *status_details =
grpc_error_string(stream_parsing->forced_close_error);
gpr_slice slice_details = gpr_slice_from_copied_string(status_details);
grpc_error_free_string(status_details);
grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global,
status_code, &slice_details);
}
grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global,
1, 1, stream_parsing->forced_close_error);
}
if (stream_parsing->received_close) {
grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global,
1, 0, GRPC_ERROR_NONE);
}
}
}
int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
grpc_server_credentials *creds) {
grpc_resolved_addresses *resolved = NULL;
grpc_tcp_server *tcp = NULL;
server_secure_state *state = NULL;
size_t i;
size_t count = 0;
int port_num = -1;
int port_temp;
grpc_security_status status = GRPC_SECURITY_ERROR;
grpc_server_security_connector *sc = NULL;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_error *err = GRPC_ERROR_NONE;
grpc_error **errors = NULL;
GRPC_API_TRACE(
"grpc_server_add_secure_http2_port("
"server=%p, addr=%s, creds=%p)",
3, (server, addr, creds));
/* create security context */
if (creds == NULL) {
err = GRPC_ERROR_CREATE(
"No credentials specified for secure server port (creds==NULL)");
goto error;
}
status = grpc_server_credentials_create_security_connector(creds, &sc);
if (status != GRPC_SECURITY_OK) {
char *msg;
gpr_asprintf(&msg,
"Unable to create secure server with credentials of type %s.",
creds->type);
err = grpc_error_set_int(GRPC_ERROR_CREATE(msg),
GRPC_ERROR_INT_SECURITY_STATUS, status);
gpr_free(msg);
goto error;
}
sc->channel_args = grpc_server_get_channel_args(server);
/* resolve address */
err = grpc_blocking_resolve_address(addr, "https", &resolved);
if (err != GRPC_ERROR_NONE) {
goto error;
}
state = gpr_malloc(sizeof(*state));
memset(state, 0, sizeof(*state));
grpc_closure_init(&state->destroy_closure, destroy_done, state);
err = grpc_tcp_server_create(&state->destroy_closure,
grpc_server_get_channel_args(server), &tcp);
if (err != GRPC_ERROR_NONE) {
goto error;
}
state->server = server;
state->tcp = tcp;
state->sc = sc;
state->creds = grpc_server_credentials_ref(creds);
state->is_shutdown = false;
gpr_mu_init(&state->mu);
gpr_ref_init(&state->refcount, 1);
errors = gpr_malloc(sizeof(*errors) * resolved->naddrs);
for (i = 0; i < resolved->naddrs; i++) {
errors[i] = grpc_tcp_server_add_port(
tcp, (struct sockaddr *)&resolved->addrs[i].addr,
resolved->addrs[i].len, &port_temp);
if (errors[i] == GRPC_ERROR_NONE) {
if (port_num == -1) {
port_num = port_temp;
} else {
GPR_ASSERT(port_num == port_temp);
}
count++;
}
}
if (count == 0) {
char *msg;
gpr_asprintf(&msg, "No address added out of total %" PRIuPTR " resolved",
resolved->naddrs);
err = GRPC_ERROR_CREATE_REFERENCING(msg, errors, resolved->naddrs);
gpr_free(msg);
goto error;
} else if (count != resolved->naddrs) {
char *msg;
gpr_asprintf(&msg, "Only %" PRIuPTR
" addresses added out of total %" PRIuPTR " resolved",
count, resolved->naddrs);
err = GRPC_ERROR_CREATE_REFERENCING(msg, errors, resolved->naddrs);
gpr_free(msg);
const char *warning_message = grpc_error_string(err);
gpr_log(GPR_INFO, "WARNING: %s", warning_message);
grpc_error_free_string(warning_message);
/* we managed to bind some addresses: continue */
} else {
for (i = 0; i < resolved->naddrs; i++) {
GRPC_ERROR_UNREF(errors[i]);
}
}
gpr_free(errors);
errors = NULL;
grpc_resolved_addresses_destroy(resolved);
/* Register with the server only upon success */
grpc_server_add_listener(&exec_ctx, server, state, start, destroy);
grpc_exec_ctx_finish(&exec_ctx);
return port_num;
/* Error path: cleanup and return */
error:
GPR_ASSERT(err != GRPC_ERROR_NONE);
if (errors != NULL) {
for (i = 0; i < resolved->naddrs; i++) {
GRPC_ERROR_UNREF(errors[i]);
}
gpr_free(errors);
}
if (resolved) {
grpc_resolved_addresses_destroy(resolved);
}
if (tcp) {
grpc_tcp_server_unref(&exec_ctx, tcp);
} else {
if (sc) {
GRPC_SECURITY_CONNECTOR_UNREF(&sc->base, "server");
}
if (state) {
gpr_free(state);
}
}
grpc_exec_ctx_finish(&exec_ctx);
const char *msg = grpc_error_string(err);
GRPC_ERROR_UNREF(err);
gpr_log(GPR_ERROR, "%s", msg);
grpc_error_free_string(msg);
return 0;
}
