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[paraslash.git] / dccp_send.c

diff --git a/dccp_send.c b/dccp_send.c
index 546056a04282b9b87c27b9a4cfb811fd005f761d..bb46678e8cdd84bd58cbc609b1c8e19252407d7a 100644 (file)
--- a/dccp_send.c
+++ b/dccp_send.c
@@ -31,8 +31,10 @@
 #include "dccp.h"
 #include "error.h"
 #include "string.h"
+#include "fd.h"
+#include "close_on_fork.h"
 #include "server.cmdline.h"
-extern struct gengetopt_args_info conf;
+
 /** the list of connected clients **/
 static struct list_head clients;
 static int listen_fd = -1;
@@ -75,6 +77,8 @@ static void dccp_post_select(fd_set *rfds, __a_unused fd_set *wfds)
        PARA_NOTICE_LOG("connection from %s\n", inet_ntoa(dc->addr.sin_addr));
        dc->fd = ret;
        list_add(&dc->node, &clients);
+       add_close_on_fork_list(dc->fd);
+       mark_fd_nonblock(dc->fd);
 }
 
 static int dccp_open(void)
@@ -101,6 +105,8 @@ static int dccp_open(void)
        if (ret < 0)
                return -E_DCCP_LISTEN;
        PARA_DEBUG_LOG("listening on fd %d\n", listen_fd);
+       add_close_on_fork_list(listen_fd);
+       mark_fd_nonblock(listen_fd);
        return 1;
 }
 
@@ -109,19 +115,27 @@ static void dccp_shutdown_client(struct dccp_client *dc)
        PARA_DEBUG_LOG("shutting down %s (fd %d)\n", inet_ntoa(dc->addr.sin_addr),
                dc->fd);
        close(dc->fd);
+       del_close_on_fork_list(dc->fd);
        list_del(&dc->node);
        free(dc);
 }
 
+#define DCCP_RETRIES 100
+
 static int dccp_write(int fd, const char *buf, size_t len)
 {
-       size_t send, written = 0;
-       int ret;
+       size_t size, written = 0;
+       int ret, retries = 0;
 again:
-       send = PARA_MIN(1024, len - written);
-       ret = write(fd, buf + written, send);
-       if (ret < 0)
-               goto err_out;
+       size = PARA_MIN(1024, len - written);
+       ret = write(fd, buf + written, size);
+       if (ret < 0) {
+               if (errno != EAGAIN || !retries++ > DCCP_RETRIES)
+                       goto err_out;
+               PARA_DEBUG_LOG("EAGAIN #%d@%zd/%zd\n", retries, written, len);
+               goto again;
+       }
+       retries = 0;
        written += ret;
        if (written >= len)
                return written;
@@ -152,25 +166,25 @@ static void dccp_send(long unsigned current_chunk,
                        continue;
                if (!dc->header_sent && current_chunk) {
                        header_buf = afs_get_header(&header_len);
-                       if (!header_buf || header_len <= 0)
-                               continue; /* header not yet available */
-                       ret = dccp_write(dc->fd, header_buf, header_len);
-                       if (ret != header_len) {
-                               int err = errno;
-                               PARA_ERROR_LOG("header write: %d/%d (%s)\n",
-                                       ret, header_len, ret < 0?
-                                       strerror(err) : "");
-                               dccp_shutdown_client(dc);
-                               continue;
-                       }
-                       dc->header_sent = 1;
-                       ret = write_ok(dc->fd);
-                       if (ret < 0) {
-                               dccp_shutdown_client(dc);
-                               continue;
+                       if (header_buf && header_len > 0) {
+                               ret = dccp_write(dc->fd, header_buf, header_len);
+                               if (ret != header_len) {
+                                       int err = errno;
+                                       PARA_ERROR_LOG("header write: %d/%d (%s)\n",
+                                               ret, header_len, ret < 0?
+                                               strerror(err) : "");
+                                       dccp_shutdown_client(dc);
+                                       continue;
+                               }
+                               dc->header_sent = 1;
+                               ret = write_ok(dc->fd);
+                               if (ret < 0) {
+                                       dccp_shutdown_client(dc);
+                                       continue;
+                               }
+                               if (!ret)
+                                       continue;
                        }
-                       if (!ret)
-                               continue;
                }
 //             PARA_DEBUG_LOG("writing %d bytes to fd %d\n", len, dc->fd);
                ret = dccp_write(dc->fd, buf, len);