nginx-quic/src/event/ngx_event_recv.c

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#include <ngx_config.h>
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#include <ngx_core.h>
#include <ngx_errno.h>
#include <ngx_log.h>
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#include <ngx_recv.h>
#include <ngx_connection.h>
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int ngx_event_recv_core(ngx_event_t *ev, char *buf, size_t size)
{
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int n;
ngx_err_t err;
ngx_connection_t *c;
c = (ngx_connection_t *) ev->data;
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if (ev->timedout) {
ngx_set_socket_errno(NGX_ETIMEDOUT);
ngx_log_error(NGX_LOG_ERR, ev->log, NGX_ETIMEDOUT, "recv() failed");
return NGX_ERROR;
}
#if (HAVE_KQUEUE)
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ngx_log_debug(ev->log, "ngx_event_recv: eof:%d, avail:%d, err:%d" _
ev->eof _ ev->available _ ev->error);
#if !(USE_KQUEUE)
if (ngx_event_type == NGX_KQUEUE_EVENT)
#endif
if (ev->eof && ev->available == 0) {
if (ev->error) {
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ngx_log_error(NGX_LOG_ERR, ev->log, ev->error, "recv() failed");
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return NGX_ERROR;
}
return 0;
}
#endif
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n = ngx_recv(c->fd, buf, size, 0);
if (n == -1) {
err = ngx_socket_errno;
if (err == NGX_EAGAIN) {
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ngx_log_error(NGX_LOG_INFO, ev->log, err, "recv() returns EAGAIN");
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return NGX_AGAIN;
}
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ngx_log_error(NGX_LOG_ERR, ev->log, err, "recv() failed");
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return NGX_ERROR;
}
#if (HAVE_KQUEUE)
#if !(USE_KQUEUE)
if (ngx_event_type == NGX_KQUEUE_EVENT)
#endif
ev->available -= n;
#endif
return n;
}