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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_imap.h>
static void ngx_imap_proxy_close_session(ngx_imap_session_t *s);
void ngx_imap_proxy_handler(ngx_event_t *ev)
{
ssize_t n;
ngx_buf_t *b;
ngx_uint_t data, do_write;
ngx_connection_t *c, *src, *dst;
ngx_imap_session_t *s;
c = ev->data;
s = c->data;
if (c == s->connection) {
src = c;
dst = s->proxy->connection;
b = s->proxy->downstream_buffer;
} else {
src = s->proxy->connection;
dst = c;
b = s->proxy->upstream_buffer;
}
do_write = ev->write ? 1 : 0;
do {
data = 0;
if (do_write == 1) {
if (dst->write->ready && b->pos < b->last) {
n = ngx_send(dst, b->pos, b->last - b->pos);
if (n == NGX_ERROR) {
ngx_imap_proxy_close_session(s);
return;
}
if (n > 0) {
data = 1;
b->pos += n;
if (b->pos == b->last) {
b->pos = b->start;
b->last = b->start;
}
}
}
}
if (src->read->ready && b->last < b->end) {
n = ngx_recv(src, b->last, b->end - b->last);
if (n == NGX_ERROR || n == 0) {
ngx_imap_proxy_close_session(s);
return;
}
if (n > 0) {
data = 1;
do_write = 1;
b->last += n;
}
}
} while (data);
}
static void ngx_imap_proxy_close_session(ngx_imap_session_t *s)
{
}
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