/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#include <stdio.h>

#include <stdlib.h>

#define WRITES            3

#if defined(__arm__) /* Decrease the chunks so the test passes on arm CI bots */

#define CHUNKS_PER_WRITE  2048

#else

#define CHUNKS_PER_WRITE  4096

#endif

#define CHUNK_SIZE        10024 /* 10 kb */

#define TOTAL_BYTES       (WRITES * CHUNKS_PER_WRITE * CHUNK_SIZE)

static char* send_buffer;

static int shutdown_cb_called = 0;

static int connect_cb_called = 0;

static int write_cb_called = 0;

static int close_cb_called = 0;

static size_t bytes_sent = 0;

static size_t bytes_sent_done = 0;

static size_t bytes_received_done = 0;

static uv_connect_t connect_req;

static uv_shutdown_t shutdown_req;

static uv_write_t write_reqs[WRITES];

static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {

  buf->base = malloc(size);

  buf->len = size;

}

static void close_cb(uv_handle_t* handle) {

  ASSERT(handle != NULL);

  close_cb_called++;

}

static void shutdown_cb(uv_shutdown_t* req, int status) {

  uv_tcp_t* tcp;

  ASSERT(req == &shutdown_req);

  ASSERT(status == 0);

  tcp = (uv_tcp_t*)(req->handle);

  /* The write buffer should be empty by now. */

  ASSERT(tcp->write_queue_size == 0);

  /* Now we wait for the EOF */

  shutdown_cb_called++;

  /* We should have had all the writes called already. */

  ASSERT(write_cb_called == WRITES);

}

static void read_cb(uv_stream_t* tcp, ssize_t nread, const uv_buf_t* buf) {

  ASSERT(tcp != NULL);

  if (nread >= 0) {

    bytes_received_done += nread;

  }

  else {

    ASSERT(nread == UV_EOF);

    printf("GOT EOF\n");

    uv_close((uv_handle_t*)tcp, close_cb);

  }

  free(buf->base);

}

static void write_cb(uv_write_t* req, int status) {

  ASSERT(req != NULL);

  if (status) {

    fprintf(stderr, "uv_write error: %s\n", uv_strerror(status));

    ASSERT(0);

  }

  bytes_sent_done += CHUNKS_PER_WRITE * CHUNK_SIZE;

  write_cb_called++;

}

static void connect_cb(uv_connect_t* req, int status) {

  uv_buf_t send_bufs[CHUNKS_PER_WRITE];

  uv_stream_t* stream;

  int i, j, r;

  ASSERT(req == &connect_req);

  ASSERT(status == 0);

  stream = req->handle;

  connect_cb_called++;

  /* Write a lot of data */

  for (i = 0; i < WRITES; i++) {

    uv_write_t* write_req = write_reqs + i;

    for (j = 0; j < CHUNKS_PER_WRITE; j++) {

      send_bufs[j] = uv_buf_init(send_buffer + bytes_sent, CHUNK_SIZE);

      bytes_sent += CHUNK_SIZE;

    }

    r = uv_write(write_req, stream, send_bufs, CHUNKS_PER_WRITE, write_cb);

    ASSERT(r == 0);

  }

  /* Shutdown on drain. */

  r = uv_shutdown(&shutdown_req, stream, shutdown_cb);

  ASSERT(r == 0);

  /* Start reading */

  r = uv_read_start(stream, alloc_cb, read_cb);

  ASSERT(r == 0);

}

TEST_IMPL(tcp_writealot) {

  struct sockaddr_in addr;

  uv_tcp_t client;

  int r;

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  send_buffer = calloc(1, TOTAL_BYTES);

  ASSERT(send_buffer != NULL);

  r = uv_tcp_init(uv_default_loop(), &client);

  ASSERT(r == 0);

  r = uv_tcp_connect(&connect_req,

                     &client,

                     (const struct sockaddr*) &addr,

                     connect_cb);

  ASSERT(r == 0);

  uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  ASSERT(shutdown_cb_called == 1);

  ASSERT(connect_cb_called == 1);

  ASSERT(write_cb_called == WRITES);

  ASSERT(close_cb_called == 1);

  ASSERT(bytes_sent == TOTAL_BYTES);

  ASSERT(bytes_sent_done == TOTAL_BYTES);

  ASSERT(bytes_received_done == TOTAL_BYTES);

  free(send_buffer);

  MAKE_VALGRIND_HAPPY();

  return 0;

}