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src/os/unix/ngx_recv.c - nginx-1.7.10
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_event.h>
- #if (NGX_HAVE_KQUEUE)
- ssize_t
- ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
- {
- ssize_t n;
- ngx_err_t err;
- ngx_event_t *rev;
- rev = c->read;
- if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
- ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "recv: eof:%d, avail:%d, err:%d",
- rev->pending_eof, rev->available, rev->kq_errno);
- if (rev->available == 0) {
- if (rev->pending_eof) {
- rev->ready = 0;
- rev->eof = 1;
- if (rev->kq_errno) {
- rev->error = 1;
- ngx_set_socket_errno(rev->kq_errno);
- return ngx_connection_error(c, rev->kq_errno,
- "kevent() reported about an closed connection");
- }
- return 0;
- } else {
- rev->ready = 0;
- return NGX_AGAIN;
- }
- }
- }
- do {
- n = recv(c->fd, buf, size, 0);
- ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "recv: fd:%d %d of %d", c->fd, n, size);
- if (n >= 0) {
- if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
- rev->available -= n;
-
- if (rev->available <= 0) {
- if (!rev->pending_eof) {
- rev->ready = 0;
- }
- if (rev->available < 0) {
- rev->available = 0;
- }
- }
- if (n == 0) {
-
- rev->ready = 0;
- rev->eof = 1;
- rev->available = 0;
- }
- return n;
- }
- if ((size_t) n < size
- && !(ngx_event_flags & NGX_USE_GREEDY_EVENT))
- {
- rev->ready = 0;
- }
- if (n == 0) {
- rev->eof = 1;
- }
- return n;
- }
- err = ngx_socket_errno;
- if (err == NGX_EAGAIN || err == NGX_EINTR) {
- ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
- "recv() not ready");
- n = NGX_AGAIN;
- } else {
- n = ngx_connection_error(c, err, "recv() failed");
- break;
- }
- } while (err == NGX_EINTR);
- rev->ready = 0;
- if (n == NGX_ERROR) {
- rev->error = 1;
- }
- return n;
- }
- #else
- ssize_t
- ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
- {
- ssize_t n;
- ngx_err_t err;
- ngx_event_t *rev;
- rev = c->read;
- do {
- n = recv(c->fd, buf, size, 0);
- ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "recv: fd:%d %d of %d", c->fd, n, size);
- if (n == 0) {
- rev->ready = 0;
- rev->eof = 1;
- return n;
- } else if (n > 0) {
- if ((size_t) n < size
- && !(ngx_event_flags & NGX_USE_GREEDY_EVENT))
- {
- rev->ready = 0;
- }
- return n;
- }
- err = ngx_socket_errno;
- if (err == NGX_EAGAIN || err == NGX_EINTR) {
- ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
- "recv() not ready");
- n = NGX_AGAIN;
- } else {
- n = ngx_connection_error(c, err, "recv() failed");
- break;
- }
- } while (err == NGX_EINTR);
- rev->ready = 0;
- if (n == NGX_ERROR) {
- rev->error = 1;
- }
- return n;
- }
- #endif
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