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src/os/win32/ngx_udp_wsarecv.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_udp_wsarecv(ngx_connection_t *c, u_char *buf, size_t size)
  15. {
  16.     int           rc;
  17.     u_long        bytes, flags;
  18.     WSABUF        wsabuf[1];
  19.     ngx_err_t     err;
  20.     ngx_event_t  *rev;

  22.     wsabuf[0].buf = (char *) buf;
  23.     wsabuf[0].len = size;
  24.     flags = 0;
  25.     bytes = 0;

  27.     rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, NULL, NULL);

  29.     ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
  30.                    "WSARecv: fd:%d rc:%d %ul of %z", c->fd, rc, bytes, size);

  32.     rev = c->read;

  34.     if (rc == -1) {
  35.         rev->ready = 0;
  36.         err = ngx_socket_errno;

  38.         if (err == WSAEWOULDBLOCK) {
  39.             ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
  40.                            "WSARecv() not ready");
  41.             return NGX_AGAIN;
  42.         }

  44.         rev->error = 1;
  45.         ngx_connection_error(c, err, "WSARecv() failed");

  47.         return NGX_ERROR;
  48.     }

  50.     return bytes;
  51. }

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