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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11
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12
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354
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13 ssize_t
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14 ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size)
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0
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15 {
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16 ssize_t n;
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17 ngx_err_t err;
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18 ngx_event_t *wev;
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19
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20 wev = c->write;
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21
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18
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22 #if (NGX_HAVE_KQUEUE)
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0
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23
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136
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24 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) {
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86
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25 (void) ngx_connection_error(c, wev->kq_errno,
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26 "kevent() reported about an closed connection");
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0
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27 wev->error = 1;
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28 return NGX_ERROR;
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29 }
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30
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31 #endif
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32
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33 for ( ;; ) {
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34 n = send(c->fd, buf, size, 0);
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35
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36 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
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37 "send: fd:%d %d of %d", c->fd, n, size);
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38
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39 if (n > 0) {
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40 if (n < (ssize_t) size) {
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41 wev->ready = 0;
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42 }
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43
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480
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44 c->sent += n;
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45
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0
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46 return n;
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47 }
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48
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49 err = ngx_socket_errno;
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50
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51 if (n == 0) {
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52 ngx_log_error(NGX_LOG_ALERT, c->log, err, "send() returned zero");
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53 wev->ready = 0;
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54 return n;
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55 }
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56
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57 if (err == NGX_EAGAIN || err == NGX_EINTR) {
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58 wev->ready = 0;
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59
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60 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
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61 "send() not ready");
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62
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63 if (err == NGX_EAGAIN) {
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64 return NGX_AGAIN;
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65 }
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66
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67 } else {
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68 wev->error = 1;
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86
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69 (void) ngx_connection_error(c, err, "send() failed");
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0
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70 return NGX_ERROR;
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71 }
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72 }
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73 }
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