mirror of https://github.com/grpc/grpc.git
Yuchen Zeng
8 years ago
parent
9b5aa6360d
commit
d4bbfc7dcf
32 changed files with 1141 additions and 777 deletions
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/*
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* |
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* Copyright 2016, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include <grpc/support/port_platform.h> |
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#ifdef GPR_POSIX_SOCKET |
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#include "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h" |
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#include "src/core/lib/iomgr/ev_posix.h" |
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#include "src/core/lib/iomgr/sockaddr.h" |
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#include <string.h> |
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#include <sys/types.h> |
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#include <ares.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/host_port.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/string_util.h> |
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#include <grpc/support/thd.h> |
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#include <grpc/support/time.h> |
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#include <grpc/support/useful.h> |
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#include "src/core/lib/iomgr/executor.h" |
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#include "src/core/lib/iomgr/iomgr_internal.h" |
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#include "src/core/lib/iomgr/sockaddr_utils.h" |
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#include "src/core/lib/iomgr/unix_sockets_posix.h" |
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#include "src/core/lib/support/block_annotate.h" |
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#include "src/core/lib/support/string.h" |
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#include <arpa/inet.h> |
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typedef struct fd_pair { |
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grpc_fd *grpc_fd; |
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int fd; |
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struct fd_pair *next; |
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} fd_pair; |
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typedef struct { |
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int id; |
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ares_socket_t socks[ARES_GETSOCK_MAXNUM]; |
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int bitmask; |
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grpc_closure driver_closure; |
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grpc_pollset_set *pollset_set; |
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ares_channel *channel; |
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fd_pair *fds; |
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} driver; |
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struct grpc_ares_request { |
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char *name; |
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char *host; |
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char *port; |
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char *default_port; |
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grpc_polling_entity *pollent; |
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grpc_closure *on_done; |
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grpc_resolved_addresses **addrs_out; |
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grpc_closure request_closure; |
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void *arg; |
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ares_channel channel; |
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driver ev_driver; |
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}; |
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struct grpc_pollset_set { |
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gpr_mu mu; |
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size_t pollset_count; |
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size_t pollset_capacity; |
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grpc_pollset **pollsets; |
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size_t pollset_set_count; |
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size_t pollset_set_capacity; |
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struct grpc_pollset_set **pollset_sets; |
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size_t fd_count; |
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size_t fd_capacity; |
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grpc_fd **fds; |
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}; |
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static void driver_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error); |
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static fd_pair *get_fd(fd_pair **head, int fd) { |
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fd_pair dummy_head; |
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fd_pair *node; |
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fd_pair *ret; |
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dummy_head.next = *head; |
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node = &dummy_head; |
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while (node->next != NULL) { |
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if (node->next->fd == fd) { |
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ret = node->next; |
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node->next = node->next->next; |
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*head = dummy_head.next; |
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return ret; |
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} |
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} |
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return NULL; |
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} |
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static void notify_on_event(grpc_exec_ctx *exec_ctx, driver *ev_driver) { |
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size_t i; |
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fd_pair *new_list = NULL; |
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ev_driver->bitmask = |
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ares_getsock(*ev_driver->channel, ev_driver->socks, ARES_GETSOCK_MAXNUM); |
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grpc_closure_init(&ev_driver->driver_closure, driver_cb, ev_driver); |
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for (i = 0; i < ARES_GETSOCK_MAXNUM; i++) { |
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char *final_name; |
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gpr_asprintf(&final_name, "host1%" PRIuPTR, i); |
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if (ARES_GETSOCK_READABLE(ev_driver->bitmask, i) || |
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ARES_GETSOCK_WRITABLE(ev_driver->bitmask, i)) { |
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gpr_log(GPR_ERROR, "%d", ev_driver->socks[i]); |
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fd_pair *fdp = get_fd(&ev_driver->fds, ev_driver->socks[i]); |
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if (!fdp) { |
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gpr_log(GPR_ERROR, "new fd"); |
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fdp = gpr_malloc(sizeof(fd_pair)); |
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fdp->grpc_fd = grpc_fd_create(ev_driver->socks[i], final_name); |
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fdp->fd = ev_driver->socks[i]; |
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grpc_pollset_set_add_fd(exec_ctx, ev_driver->pollset_set, fdp->grpc_fd); |
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// new_fd_pair->grpc_fd = fd;
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// new_fd_pair->next = ev_driver->fds;
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} |
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fdp->next = new_list; |
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new_list = fdp; |
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if (ARES_GETSOCK_READABLE(ev_driver->bitmask, i)) { |
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gpr_log(GPR_ERROR, "READABLE"); |
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grpc_fd_notify_on_read(exec_ctx, fdp->grpc_fd, |
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&ev_driver->driver_closure); |
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} |
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if (ARES_GETSOCK_WRITABLE(ev_driver->bitmask, i)) { |
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gpr_log(GPR_ERROR, "writable"); |
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grpc_fd_notify_on_write(exec_ctx, fdp->grpc_fd, |
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&ev_driver->driver_closure); |
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} |
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} |
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gpr_free(final_name); |
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} |
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while (ev_driver->fds != NULL) { |
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fd_pair *cur; |
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// int fd;s
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cur = ev_driver->fds; |
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ev_driver->fds = ev_driver->fds->next; |
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gpr_log(GPR_ERROR, "fd in ev_driver: %d\n", cur->fd); |
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grpc_pollset_set_del_fd(exec_ctx, ev_driver->pollset_set, cur->grpc_fd); |
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gpr_log(GPR_ERROR, "grpc_pollset_set_del_fd"); |
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grpc_fd_shutdown(exec_ctx, cur->grpc_fd); |
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gpr_log(GPR_ERROR, "grpc_fd_shutdown"); |
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grpc_fd_orphan(exec_ctx, cur->grpc_fd, NULL, NULL, "come on.."); |
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gpr_log(GPR_ERROR, "grpc_fd_orphan"); |
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gpr_free(cur); |
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} |
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ev_driver->fds = new_list; |
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gpr_log(GPR_ERROR, "eof notify_on_event"); |
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} |
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static void driver_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { |
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driver *d = arg; |
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size_t i; |
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gpr_log(GPR_ERROR, "driver_cb"); |
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if (error == GRPC_ERROR_NONE) { |
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gpr_log(GPR_ERROR, "GRPC_ERROR_NONE"); |
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for (i = 0; i < ARES_GETSOCK_MAXNUM; i++) { |
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ares_process_fd( |
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*d->channel, |
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ARES_GETSOCK_READABLE(d->bitmask, i) ? d->socks[i] : ARES_SOCKET_BAD, |
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ARES_GETSOCK_WRITABLE(d->bitmask, i) ? d->socks[i] : ARES_SOCKET_BAD); |
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} |
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} |
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notify_on_event(exec_ctx, d); |
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grpc_exec_ctx_flush(exec_ctx); |
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} |
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static void on_done_cb(void *arg, int status, int timeouts, |
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struct hostent *hostent) { |
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gpr_log(GPR_ERROR, "status: %d", status); |
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grpc_ares_request *r = (grpc_ares_request *)arg; |
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grpc_error *err; |
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gpr_log(GPR_ERROR, "status: %s", r->name); |
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grpc_resolved_addresses **addresses = r->addrs_out; |
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size_t i; |
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if (status == ARES_SUCCESS) { |
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gpr_log(GPR_ERROR, "status ARES_SUCCESS"); |
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err = GRPC_ERROR_NONE; |
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*addresses = gpr_malloc(sizeof(grpc_resolved_addresses)); |
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for ((*addresses)->naddrs = 0; |
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hostent->h_addr_list[(*addresses)->naddrs] != NULL; |
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(*addresses)->naddrs++) { |
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} |
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gpr_log(GPR_ERROR, "naddr: %" PRIuPTR, (*addresses)->naddrs); |
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(*addresses)->addrs = |
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gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs); |
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for (i = 0; i < (*addresses)->naddrs; i++) { |
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if (hostent->h_addrtype == AF_INET6) { |
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char output[INET6_ADDRSTRLEN]; |
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gpr_log(GPR_ERROR, "AF_INET6"); |
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struct sockaddr_in6 *addr; |
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(*addresses)->addrs[i].len = sizeof(struct sockaddr_in6); |
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// &(*addresses)->addrs[i].addr =
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// gpr_malloc((*addresses)->addrs[i].len);
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addr = (struct sockaddr_in6 *)&(*addresses)->addrs[i].addr; |
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memcpy(&addr->sin6_addr, hostent->h_addr_list[i], |
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sizeof(struct in6_addr)); |
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ares_inet_ntop(AF_INET6, &addr->sin6_addr, output, INET6_ADDRSTRLEN); |
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gpr_log(GPR_ERROR, "addr: %s", output); |
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gpr_log(GPR_ERROR, "port: %s", r->port); |
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addr->sin6_family = (sa_family_t)hostent->h_addrtype; |
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addr->sin6_port = htons(atoi(r->port)); // TODO: port
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} else { |
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gpr_log(GPR_ERROR, "AF_INET"); |
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struct sockaddr_in *addr; |
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(*addresses)->addrs[i].len = sizeof(struct sockaddr_in); |
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// &(*addresses)->addrs[i].addr =
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// gpr_malloc((*addresses)->addrs[i].len);
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addr = (struct sockaddr_in *)&(*addresses)->addrs[i].addr; |
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memcpy(&addr->sin_addr, hostent->h_addr_list[i], |
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sizeof(struct in_addr)); |
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addr->sin_family = (sa_family_t)hostent->h_addrtype; |
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addr->sin_port = htons(atoi(r->port)); // TODO: port
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} |
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} |
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// ares_destroy(r->channel);
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} else { |
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gpr_log(GPR_ERROR, "status not ARES_SUCCESS"); |
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err = grpc_error_set_str( |
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grpc_error_set_str( |
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grpc_error_set_str(grpc_error_set_int(GRPC_ERROR_CREATE("OS Error"), |
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GRPC_ERROR_INT_ERRNO, status), |
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GRPC_ERROR_STR_OS_ERROR, gai_strerror(status)), |
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GRPC_ERROR_STR_SYSCALL, "getaddrinfo"), |
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GRPC_ERROR_STR_TARGET_ADDRESS, r->name); |
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} |
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grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
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grpc_exec_ctx_sched(&exec_ctx, r->on_done, err, NULL); |
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grpc_exec_ctx_flush(&exec_ctx); |
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grpc_exec_ctx_finish(&exec_ctx); |
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} |
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static void resolve_address_impl(grpc_exec_ctx *exec_ctx, void *arg, |
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grpc_error *error) { |
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int status; |
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grpc_ares_request *r = (grpc_ares_request *)arg; |
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gpr_log(GPR_ERROR, "Really?"); |
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status = ares_init(&r->channel); |
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if (status != ARES_SUCCESS) { |
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gpr_log(GPR_ERROR, "ares_init failed"); |
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} |
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driver *ev_driver = &r->ev_driver; |
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ev_driver->channel = &r->channel; |
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gpr_log(GPR_ERROR, "before ares_gethostbyname %s", r->host); |
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ares_gethostbyname(r->channel, r->host, AF_UNSPEC, on_done_cb, r); |
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gpr_log(GPR_ERROR, "before ares_getsock"); |
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notify_on_event(exec_ctx, &r->ev_driver); |
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gpr_log(GPR_ERROR, "before poll"); |
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gpr_log(GPR_ERROR, "eof resolve_address_impl"); |
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} |
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static int try_fake_resolve(const char *name, const char *port, |
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grpc_resolved_addresses **addresses) { |
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struct sockaddr_in sa; |
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struct sockaddr_in6 sa6; |
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if (0 != ares_inet_pton(AF_INET, name, &(sa.sin_addr))) { |
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gpr_log(GPR_ERROR, "AF_INET"); |
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*addresses = gpr_malloc(sizeof(grpc_resolved_addresses)); |
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(*addresses)->naddrs = 1; |
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(*addresses)->addrs = |
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gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs); |
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(*addresses)->addrs[0].len = sizeof(struct sockaddr_in); |
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sa.sin_family = AF_INET; |
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sa.sin_port = htons(atoi(port)); // TODO: port
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memcpy(&(*addresses)->addrs[0].addr, &sa, sizeof(struct sockaddr_in)); |
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return 1; |
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} |
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if (0 != ares_inet_pton(AF_INET6, name, &(sa6.sin6_addr))) { |
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char output[INET6_ADDRSTRLEN]; |
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gpr_log(GPR_ERROR, "AF_INET6"); |
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*addresses = gpr_malloc(sizeof(grpc_resolved_addresses)); |
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(*addresses)->naddrs = 1; |
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(*addresses)->addrs = |
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gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs); |
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(*addresses)->addrs[0].len = sizeof(struct sockaddr_in6); |
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sa6.sin6_family = AF_INET6; |
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sa6.sin6_port = htons(atoi(port)); // TODO: port
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memcpy(&(*addresses)->addrs[0].addr, &sa6, sizeof(struct sockaddr_in6)); |
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ares_inet_ntop(AF_INET6, &sa6.sin6_addr, output, INET6_ADDRSTRLEN); |
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gpr_log(GPR_ERROR, "addr: %s", output); |
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gpr_log(GPR_ERROR, "port: %s", port); |
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return 1; |
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} |
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return 0; |
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} |
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grpc_ares_request *grpc_resolve_address_ares(grpc_exec_ctx *exec_ctx, |
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const char *name, |
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const char *default_port, |
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grpc_pollset_set *pollset_set, |
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grpc_closure *on_done, |
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grpc_resolved_addresses **addrs) { |
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char *host; |
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char *port; |
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grpc_error *err; |
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grpc_ares_request *r = gpr_malloc(sizeof(grpc_ares_request)); |
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r->name = gpr_strdup(name); |
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r->default_port = gpr_strdup(default_port); |
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r->on_done = on_done; |
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r->addrs_out = addrs; |
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r->ev_driver.pollset_set = pollset_set; |
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r->ev_driver.fds = NULL; |
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if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' && |
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name[4] == ':' && name[5] != 0) { |
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grpc_resolve_unix_domain_address(name + 5, addrs); |
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} |
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/* parse name, splitting it into host and port parts */ |
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gpr_split_host_port(name, &host, &port); |
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if (host == NULL) { |
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err = grpc_error_set_str(GRPC_ERROR_CREATE("unparseable host:port"), |
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GRPC_ERROR_STR_TARGET_ADDRESS, name); |
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grpc_exec_ctx_sched(exec_ctx, on_done, err, NULL); |
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} else if (port == NULL) { |
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if (default_port == NULL) { |
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err = grpc_error_set_str(GRPC_ERROR_CREATE("no port in name"), |
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GRPC_ERROR_STR_TARGET_ADDRESS, name); |
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grpc_exec_ctx_sched(exec_ctx, on_done, err, NULL); |
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} |
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port = gpr_strdup(default_port); |
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} else if (try_fake_resolve(host, port, addrs)) { |
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grpc_exec_ctx_sched(exec_ctx, on_done, GRPC_ERROR_NONE, NULL); |
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} else { |
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r->port = gpr_strdup(port); |
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r->host = gpr_strdup(host); |
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grpc_closure_init(&r->request_closure, resolve_address_impl, r); |
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grpc_exec_ctx_sched(exec_ctx, &r->request_closure, GRPC_ERROR_NONE, NULL); |
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} |
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gpr_free(host); |
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gpr_free(port); |
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return r; |
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} |
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void grpc_ares_init(void) { |
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int status = ares_library_init(ARES_LIB_INIT_ALL); |
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if (status != ARES_SUCCESS) { |
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gpr_log(GPR_ERROR, "ares_library_init failed"); |
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} |
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} |
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#endif |
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@ -0,0 +1,52 @@ |
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/*
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "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 |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef GRPC_CORE_EXT_RESOLVER_DNS_CARES_RESOLVE_ADDRESS_CARES_H |
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#define GRPC_CORE_EXT_RESOLVER_DNS_CARES_RESOLVE_ADDRESS_CARES_H |
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#include <stddef.h> |
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#include "src/core/lib/iomgr/exec_ctx.h" |
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#include "src/core/lib/iomgr/iomgr.h" |
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#include "src/core/lib/iomgr/polling_entity.h" |
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#include "src/core/lib/iomgr/resolve_address.h" |
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typedef struct grpc_ares_request grpc_ares_request; |
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grpc_ares_request *grpc_resolve_address_ares( |
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grpc_exec_ctx *exec_ctx, const char *addr, const char *default_port, |
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grpc_pollset_set *pollset_set, grpc_closure *on_done, |
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grpc_resolved_addresses **addresses); |
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void grpc_ares_init(void); |
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#endif /* GRPC_CORE_EXT_RESOLVER_DNS_CARES_RESOLVE_ADDRESS_CARES_H */ |
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@ -1,201 +0,0 @@ |
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/*
|
||||
* |
||||
* Copyright 2016, 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/support/port_platform.h> |
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
||||
#include "src/core/lib/iomgr/resolve_address.h" |
||||
#include "src/core/lib/iomgr/sockaddr.h" |
||||
|
||||
#include <string.h> |
||||
#include <sys/types.h> |
||||
|
||||
#include <ares.h> |
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/host_port.h> |
||||
#include <grpc/support/log.h> |
||||
#include <grpc/support/string_util.h> |
||||
#include <grpc/support/thd.h> |
||||
#include <grpc/support/time.h> |
||||
#include <grpc/support/useful.h> |
||||
#include "src/core/lib/iomgr/executor.h" |
||||
#include "src/core/lib/iomgr/iomgr_internal.h" |
||||
#include "src/core/lib/iomgr/sockaddr_utils.h" |
||||
#include "src/core/lib/iomgr/unix_sockets_posix.h" |
||||
#include "src/core/lib/support/block_annotate.h" |
||||
#include "src/core/lib/support/string.h" |
||||
|
||||
static grpc_error *blocking_resolve_address_impl( |
||||
const char *name, const char *default_port, |
||||
grpc_resolved_addresses **addresses) { |
||||
struct addrinfo hints; |
||||
struct addrinfo *result = NULL, *resp; |
||||
char *host; |
||||
char *port; |
||||
int s; |
||||
size_t i; |
||||
grpc_error *err; |
||||
|
||||
if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' && |
||||
name[4] == ':' && name[5] != 0) { |
||||
return grpc_resolve_unix_domain_address(name + 5, addresses); |
||||
} |
||||
|
||||
/* parse name, splitting it into host and port parts */ |
||||
gpr_split_host_port(name, &host, &port); |
||||
if (host == NULL) { |
||||
err = grpc_error_set_str(GRPC_ERROR_CREATE("unparseable host:port"), |
||||
GRPC_ERROR_STR_TARGET_ADDRESS, name); |
||||
goto done; |
||||
} |
||||
if (port == NULL) { |
||||
if (default_port == NULL) { |
||||
err = grpc_error_set_str(GRPC_ERROR_CREATE("no port in name"), |
||||
GRPC_ERROR_STR_TARGET_ADDRESS, name); |
||||
goto done; |
||||
} |
||||
port = gpr_strdup(default_port); |
||||
} |
||||
|
||||
/* Call getaddrinfo */ |
||||
memset(&hints, 0, sizeof(hints)); |
||||
hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */ |
||||
hints.ai_socktype = SOCK_STREAM; /* stream socket */ |
||||
hints.ai_flags = AI_PASSIVE; /* for wildcard IP address */ |
||||
|
||||
GRPC_SCHEDULING_START_BLOCKING_REGION; |
||||
s = getaddrinfo(host, port, &hints, &result); |
||||
GRPC_SCHEDULING_END_BLOCKING_REGION; |
||||
|
||||
if (s != 0) { |
||||
/* Retry if well-known service name is recognized */ |
||||
char *svc[][2] = {{"http", "80"}, {"https", "443"}}; |
||||
for (i = 0; i < GPR_ARRAY_SIZE(svc); i++) { |
||||
if (strcmp(port, svc[i][0]) == 0) { |
||||
GRPC_SCHEDULING_START_BLOCKING_REGION; |
||||
s = getaddrinfo(host, svc[i][1], &hints, &result); |
||||
GRPC_SCHEDULING_END_BLOCKING_REGION; |
||||
break; |
||||
} |
||||
} |
||||
} |
||||
|
||||
if (s != 0) { |
||||
err = grpc_error_set_str( |
||||
grpc_error_set_str( |
||||
grpc_error_set_str(grpc_error_set_int(GRPC_ERROR_CREATE("OS Error"), |
||||
GRPC_ERROR_INT_ERRNO, s), |
||||
GRPC_ERROR_STR_OS_ERROR, gai_strerror(s)), |
||||
GRPC_ERROR_STR_SYSCALL, "getaddrinfo"), |
||||
GRPC_ERROR_STR_TARGET_ADDRESS, name); |
||||
goto done; |
||||
} |
||||
|
||||
/* Success path: set addrs non-NULL, fill it in */ |
||||
*addresses = gpr_malloc(sizeof(grpc_resolved_addresses)); |
||||
(*addresses)->naddrs = 0; |
||||
for (resp = result; resp != NULL; resp = resp->ai_next) { |
||||
(*addresses)->naddrs++; |
||||
} |
||||
(*addresses)->addrs = |
||||
gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs); |
||||
i = 0; |
||||
for (resp = result; resp != NULL; resp = resp->ai_next) { |
||||
memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen); |
||||
(*addresses)->addrs[i].len = resp->ai_addrlen; |
||||
i++; |
||||
} |
||||
err = GRPC_ERROR_NONE; |
||||
|
||||
done: |
||||
gpr_free(host); |
||||
gpr_free(port); |
||||
if (result) { |
||||
freeaddrinfo(result); |
||||
} |
||||
return err; |
||||
} |
||||
|
||||
grpc_error *(*grpc_blocking_resolve_address)( |
||||
const char *name, const char *default_port, |
||||
grpc_resolved_addresses **addresses) = blocking_resolve_address_impl; |
||||
|
||||
typedef struct { |
||||
char *name; |
||||
char *default_port; |
||||
grpc_closure *on_done; |
||||
grpc_resolved_addresses **addrs_out; |
||||
grpc_closure request_closure; |
||||
void *arg; |
||||
} request; |
||||
|
||||
/* Callback to be passed to grpc_executor to asynch-ify
|
||||
* grpc_blocking_resolve_address */ |
||||
static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp, |
||||
grpc_error *error) { |
||||
request *r = rp; |
||||
grpc_exec_ctx_sched( |
||||
exec_ctx, r->on_done, |
||||
grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out), |
||||
NULL); |
||||
gpr_free(r->name); |
||||
gpr_free(r->default_port); |
||||
gpr_free(r); |
||||
} |
||||
|
||||
void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) { |
||||
if (addrs != NULL) { |
||||
gpr_free(addrs->addrs); |
||||
} |
||||
gpr_free(addrs); |
||||
} |
||||
|
||||
static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name, |
||||
const char *default_port, |
||||
grpc_closure *on_done, |
||||
grpc_resolved_addresses **addrs) { |
||||
request *r = gpr_malloc(sizeof(request)); |
||||
grpc_closure_init(&r->request_closure, do_request_thread, r); |
||||
r->name = gpr_strdup(name); |
||||
r->default_port = gpr_strdup(default_port); |
||||
r->on_done = on_done; |
||||
r->addrs_out = addrs; |
||||
grpc_executor_push(&r->request_closure, GRPC_ERROR_NONE); |
||||
} |
||||
|
||||
void (*grpc_resolve_address)(grpc_exec_ctx *exec_ctx, const char *name, |
||||
const char *default_port, grpc_closure *on_done, |
||||
grpc_resolved_addresses **addrs) = |
||||
resolve_address_impl; |
||||
|
||||
#endif |
||||
Loading…
Reference in new issue