socket_server core

[flashjay]

我用的是tag 0.4.0版本，但是看下来现在的版本貌似并没有相关的修复；这个问题不是经常出现，可能运行几个月出现一次。
编译环境: Linux 2.6.32-431.17.1.el6.x86_64, gcc (GCC) 4.8.2 20140120 (Red Hat 4.8.2-15)
使用环境: Linux VM_139_120_tlinux 2.6.32.57-tlinux_xenU-1.1.rc10-default
skynet版本: tag 0.4.0

问题出现行数： 522
512 static int
513 send_socket(struct socket_server *ss, struct request_send * request, struct socket_message *result, int priority) {
514 int id = request->id;
515 struct socket * s = &ss->slot[HASH_ID(id)];
516 if (s->type == SOCKET_TYPE_INVALID || s->id != id
517 || s->type == SOCKET_TYPE_HALFCLOSE
518 || s->type == SOCKET_TYPE_PACCEPT) {
519 FREE(request->buffer);
520 return -1;
521 }
522 assert(s->type != SOCKET_TYPE_PLISTEN && s->type != SOCKET_TYPE_LISTEN)

错误coredump查看如下：
Program terminated with signal 6, Aborted.
(gdb) bt
#0 0x00007fbc08870885 in raise () from /lib64/libc.so.6

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.49.tl1.x86_64 libgcc-4.4.6-4.tl1.x86_64
(gdb) bt
#0 0x00007fbc08870885 in raise () from /lib64/libc.so.6
#1 0x00007fbc08872065 in abort () from /lib64/libc.so.6
#2 0x00007fbc088699fe in __assert_fail_base () from /lib64/libc.so.6
#3 0x00007fbc08869ac0 in __assert_fail () from /lib64/libc.so.6
#4 0x000000000064b33e in send_socket (ss=0x7fbc0843d010, request=0x7fbc07035cd0, result=0x7fbc07035e50, priority=0)

at skynet/skynet-src/socket_server.c:522

#5 0x000000000064bbc6 in ctrl_cmd (ss=0x7fbc0843d010, result=0x7fbc07035e50) at /skynet/skynet-src/socket_server.c:717
#6 0x000000000064c156 in socket_server_poll (ss=0x7fbc0843d010, result=0x7fbc07035e50, more=0x7fbc07035e4c)

at /skynet/skynet-src/socket_server.c:865

#7 0x0000000000649e46 in skynet_socket_poll () at /skynet/skynet-src/skynet_socket.c:75
#8 0x0000000000647698 in _socket (p=0x2a3f9f0) at /skynet/skynet-src/skynet_start.c:56
#9 0x00007fbc0906f7f1 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fbc08923ccd in clone () from /lib64/libc.so.6

(gdb) p *s
$2 = {fd = 10, id = 1, type = 3, size = 64, wb_size = 0, opaque = 9, high = {head = 0x0, tail = 0x0}, low = {head = 0x0, tail = 0x0}}

即：s->type 此刻等于 SOCKET_TYPE_LISTEN，断言失败导致core

[cloudwu]

这里不应该是 assert, 而应该返回错误.
你的上层逻辑有别的问题,因为你向一个 listen 的 fd 写数据了.