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src/os/win32/ngx_wsasend.c - nginx-1.31.9 nginx/ @ 2a3a19c6f

Functions defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #include <ngx_config.h>
  9. #include <ngx_core.h>
  10. #include <ngx_event.h>


  13. ssize_t
  14. ‌ngx_wsasend(ngx_connection_t *c, u_char *buf, size_t size)
  15. {
  16.     int           n;
  17.     u_long        sent;
  18.     ngx_err_t     err;
  19.     ngx_event_t  *wev;
  20.     WSABUF        wsabuf;

  22.     wev = c->write;

  24.     if (!wev->ready) {
  25.         return NGX_AGAIN;
  26.     }

  28.     /*
  29.      * WSABUF must be 4-byte aligned otherwise
  30.      * WSASend() will return undocumented WSAEINVAL error.
  31.      */

  33.     wsabuf.buf = (char *) buf;
  34.     wsabuf.len = size;

  36.     sent = 0;

  38.     n = WSASend(c->fd, &wsabuf, 1, &sent, 0, NULL, NULL);

  40.     ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
  41.                    "WSASend: fd:%d, %d, %ul of %uz", c->fd, n, sent, size);

  43.     if (n == 0) {
  44.         if (sent < size) {
  45.             wev->ready = 0;
  46.         }

  48.         c->sent += sent;

  50.         return sent;
  51.     }

  53.     err = ngx_socket_errno;

  55.     if (err == WSAEWOULDBLOCK) {
  56.         ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, "WSASend() not ready");
  57.         wev->ready = 0;
  58.         return NGX_AGAIN;
  59.     }

  61.     wev->error = 1;
  62.     ngx_connection_error(c, err, "WSASend() failed");

  64.     return NGX_ERROR;
  65. }

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