TCP/IP errors NO 错误码

基于 UNIX 的环境中的 TCP/IP 用户，下表列出了某些最常见的错误原因码 (errno)。完整的错误列表可以在文件 /usr/include/sys/errno.h 中找到 Errno。针对每一种操作系统给出了errno 号码。

ErrnoAIXHP-UXSolarisUnixWareLinux说明EINTR44444系统调用中断。EAGAIN1111111111资源临时不可用。EBUSY1616161616资源正忙。EMFILE2424242424每个进程文件描述符表已满。EPIPE3232323232管道断开。EADDRINUSE6722612512598已经在使用指定的地址。ENETDOWN69228127127100网络已停止。ENETUNREACH70229128128101没有到达网络的可用路由。ENETRESET71230129129102重设时网络已卸下了连接。ECONNRESET73232131131104伙伴已重设了连接。ENOBUFS74233132132105系统中没有足够的缓冲区空间资源可用来完成调用。ENOTCONN76235134134107未连接套接字。ETIMEDOUT78238145145110连接超时。ECONNREFUSED79239146146111连接已被拒绝。若您正在尝试与数据库相连，则检查是否已成功启动了服务器上的数据库管理程序和 TCP/IP 协议支持。 若使用 SOCKS 协议支持，则还要确保在 SOCKS 服务器上已成功启动了 TCP/IP 协议支持。EHOSTDOWN80241147147147主机已停机。EHOSTUNREACH81242148148113没有到达主机的可用路由。

Linux Socket Errno错误代码列表

124EMEDIUMTYPE   Wrong medium type    123 ENOMEDIUM    No medium found    122EDQUOT        Disk quota exceeded    121 EREMOTEIO    Remote I/O error    120EISNAM        Is a named type file    119ENAVAIL       No XENIX semaphores available    118ENOTNAM       Not a XENIX named type file    117EUCLEAN       Structure needs cleaning    116ESTALE        Stale NFS file handle    115 EINPROGRESS  +Operation nowin progress    114EALREADY      Operation already in progress    113 EHOSTUNREACH  No route tohost    112 EHOSTDOWN    Host is down    111 ECONNREFUSED  Connection refused    110 ETIMEDOUT   +Connection timed out    109 ETOOMANYREFS  Too manyreferences: cannot splice    108 ESHUTDOWN    Cannot send after transport endpoint shutdown    107ENOTCONN      Transport endpoint is not connected    106EISCONN       Transport endpoint is alreadyconnected    105ENOBUFS       No buffer space available    104 ECONNRESET   Connection reset by peer    103 ECONNABORTED  Softwarecaused connection abort    102 ENETRESET    Network dropped connection on reset    101 ENETUNREACH   Networkis unreachable    100ENETDOWN      Network is down     99 EADDRNOTAVAIL Cannot assignrequested address     98 EADDRINUSE   Address already in use     97 EAFNOSUPPORT  Addressfamily not supported by protocol     96 EPFNOSUPPORT  Protocolfamily not supported     95 EOPNOTSUPP   Operation not supported     94 ESOCKTNOSUPPORT Socket typenot supported     93 EPROTONOSUPPORT Protocol notsupported     92 ENOPROTOOPT  Protocol not available     91 EPROTOTYPE   Protocol wrong type for socket     90EMSGSIZE     +Message too long     89 EDESTADDRREQ Destination address required     88ENOTSOCK      Socket operation on non-socket     87EUSERS        Too many users     86ESTRPIPE      Streams pipe error     85 ERESTART     Interrupted system call should be restarted     84EILSEQ        Invalid or incompletemultibyte or wide character     83ELIBEXEC      Cannot exec a shared library directly     82ELIBMAX       Attempting to link in too manyshared libraries     81 ELIBSCN      .lib section in a.out corrupted     80ELIBBAD       Accessing a corrupted shared library     79ELIBACC       Can not access a needed sharedlibrary     78EREMCHG       Remote address changed     77EBADFD        File descriptor in bad state     76ENOTUNIQ      Name not unique on network     75EOVERFLOW     Value too large for defined data type     74EBADMSG      +Bad message     73EDOTDOT       RFS specific error     72EMULTIHOP     Multihop attempted     71EPROTO        Protocol error     70ECOMM         Communication error onsend     69ESRMNT        Srmount error     68EADV          Advertise error     67ENOLINK       Link has been severed     66EREMOTE       Object is remote     65ENOPKG        Package not installed     64ENONET        Machine is not on the network     63ENOSR         Out of streams resources     62ETIME         Timer expired     61ENODATA       No data available     60ENOSTR        Device not a stream     59EBFONT        Bad font file format     57EBADSLT       Invalid slot     56EBADRQC       Invalid request code     55ENOANO        No anode     54EXFULL        Exchange full     53EBADR         Invalid request descriptor     52EBADE         Invalid exchange     51EL2HLT        Level 2 halted     50ENOCSI        No CSI structure available     49EUNATCH       Protocol driver not attached     48ELNRNG        Link number out of range     47EL3RST        Level 3 reset     46EL3HLT        Level 3 halted     45EL2NSYNC      Level 2 not synchronized     44ECHRNG        Channel number out of range     43EIDRM         Identifier removed     42ENOMSG        No message of desired type     40ELOOP         Too many levels ofsymbolic links     39 ENOTEMPTY   +Directory not empty     38 ENOSYS      +Function not implemented     37ENOLCK       +No locks available     36 ENAMETOOLONG +File name toolong     35EDEADLK      +Resource deadlock avoided     34ERANGE       +Numerical result out of range     33EDOM         +Numerical argument out ofdomain     32EPIPE        +Broken pipe     31EMLINK       +Too many links     30EROFS        +Read-only file system     29ESPIPE       +Illegal seek     28ENOSPC       +No space left on device     27EFBIG        +File too large     26ETXTBSY       Text file busy     25ENOTTY       +Inappropriate ioctl for device     24EMFILE       +Too many open files     23ENFILE       +Too many open files in system     22EINVAL       +Invalid argument     21EISDIR       +Is a directory     20ENOTDIR      +Not a directory     19ENODEV       +No such device     18EXDEV        +Invalid cross-device link     17EEXIST       +File exists     16EBUSY        +Device or resource busy     15ENOTBLK       Block device required     14 EFAULT      +Bad address     13EACCES       +Permission denied     12ENOMEM       +Cannot allocate memory     11EAGAIN       +Resource temporarily unavailable     10ECHILD       +No child processes      9EBADF        +Bad file descriptor      8ENOEXEC      +Exec format error      7E2BIG        +Argument list too long      6ENXIO        +No such device or address      5EIO          +Input/output error      4EINTR        +Interrupted system call      3ESRCH        +No such process      2ENOENT       +No such file or directory      1EPERM        +Operation not permitted      0--            Success