| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/grpc.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| #include <grpc/support/useful.h> |
| |
| #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/channel/handshaker.h" |
| #include "src/core/lib/channel/http_server_filter.h" |
| #include "src/core/lib/iomgr/resolve_address.h" |
| #include "src/core/lib/iomgr/tcp_server.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/server.h" |
| |
| typedef struct server_connect_state { |
| grpc_server *server; |
| grpc_pollset *accepting_pollset; |
| grpc_tcp_server_acceptor *acceptor; |
| grpc_handshake_manager *handshake_mgr; |
| } server_connect_state; |
| |
| 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_connect_state *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_handshake_manager_shutdown(exec_ctx, state->handshake_mgr); |
| gpr_free(read_buffer); |
| } else { |
| // Beware that the call to grpc_create_chttp2_transport() has to happen |
| // before grpc_tcp_server_destroy(). This is fine here, but similar code |
| // asynchronously doing a handshake instead of calling |
| // grpc_tcp_server_start() (as in server_secure_chttp2.c) needs to add |
| // synchronization to avoid this case. |
| grpc_transport *transport = |
| grpc_create_chttp2_transport(exec_ctx, args, endpoint, 0); |
| grpc_server_setup_transport(exec_ctx, state->server, transport, |
| state->accepting_pollset, |
| grpc_server_get_channel_args(state->server)); |
| grpc_chttp2_transport_start_reading(exec_ctx, transport, read_buffer); |
| } |
| // Clean up. |
| grpc_channel_args_destroy(args); |
| grpc_handshake_manager_destroy(exec_ctx, state->handshake_mgr); |
| gpr_free(state); |
| } |
| |
| static void on_accept(grpc_exec_ctx *exec_ctx, void *server, grpc_endpoint *tcp, |
| grpc_pollset *accepting_pollset, |
| grpc_tcp_server_acceptor *acceptor) { |
| server_connect_state *state = gpr_malloc(sizeof(server_connect_state)); |
| state->server = server; |
| state->accepting_pollset = accepting_pollset; |
| state->acceptor = acceptor; |
| state->handshake_mgr = grpc_handshake_manager_create(); |
| // TODO(roth): We should really get this timeout value from channel |
| // args instead of hard-coding it. |
| const gpr_timespec deadline = gpr_time_add( |
| gpr_now(GPR_CLOCK_MONOTONIC), gpr_time_from_seconds(120, GPR_TIMESPAN)); |
| grpc_handshake_manager_do_handshake( |
| exec_ctx, state->handshake_mgr, tcp, grpc_server_get_channel_args(server), |
| deadline, acceptor, on_handshake_done, state); |
| } |
| |
| /* Server callback: start listening on our ports */ |
| static void start(grpc_exec_ctx *exec_ctx, grpc_server *server, void *tcpp, |
| grpc_pollset **pollsets, size_t pollset_count) { |
| grpc_tcp_server *tcp = tcpp; |
| grpc_tcp_server_start(exec_ctx, tcp, pollsets, pollset_count, on_accept, |
| server); |
| } |
| |
| /* Server callback: destroy the tcp listener (so we don't generate further |
| callbacks) */ |
| static void destroy(grpc_exec_ctx *exec_ctx, grpc_server *server, void *tcpp, |
| grpc_closure *destroy_done) { |
| grpc_tcp_server *tcp = tcpp; |
| grpc_tcp_server_shutdown_listeners(exec_ctx, tcp); |
| grpc_tcp_server_unref(exec_ctx, tcp); |
| grpc_exec_ctx_sched(exec_ctx, destroy_done, GRPC_ERROR_NONE, NULL); |
| } |
| |
| 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, grpc_server_get_channel_args(server), &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; |
| } |