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net.h

00001 /*
00002  * Copyright (c) 2005, 2006 by KoanLogic s.r.l. - All rights reserved.
00003  */
00004 
00005 #ifndef _U_NET_H_
00006 #define _U_NET_H_
00007 #include "libu_conf.h"
00008 
00009 #ifdef OS_UNIX
00010 #include <sys/types.h>
00011 #include <sys/socket.h>
00012 #include <netinet/in.h>
00013 #include <netinet/tcp.h>
00014 #ifdef HAVE_SYSUIO
00015 #include <sys/uio.h>
00016 #endif
00017 #include <arpa/inet.h>
00018 #include <netdb.h>
00019 #ifndef NO_UNIXSOCK
00020 #include <sys/un.h>
00021 #endif
00022 #endif
00023 
00024 #ifdef OS_WIN
00025 #include <windows.h>
00026 #include <winsock.h>
00027 #include <winsock2.h>
00028 #include <ws2tcpip.h>
00029 #endif
00030 
00031 #ifndef HAVE_IN_ADDR_T
00032 typedef unsigned long in_addr_t;
00033 #endif
00034 
00035 #include <stdio.h>
00036 #include <u/os.h>
00037 #include <u/uri.h>
00038 
00039 #ifdef __cplusplus
00040 extern "C" {
00041 #endif
00042 
00043 #define U_NET_BACKLOG 300
00044 
00045 /* The Net module defines the following (private) URI types: 
00046  *    {tc,ud}p[46]://<host>:<port> for TCP/UDP over IPv[46] addresses,
00047  *    unix://<abs_path> for UNIX IPC endpoints. 
00048  * Internally, they are translated into an u_net_addr_t structure. */
00049 struct u_net_addr_s
00050 {
00051     enum { 
00052         U_NET_TYPE_MIN,
00053         U_NET_TCP4,
00054         U_NET_TCP6,
00055         U_NET_UDP4,
00056         U_NET_UDP6,
00057         U_NET_UNIX,
00058         U_NET_TYPE_MAX
00059     } type;
00060     union
00061     {
00062         struct sockaddr_in  sin;
00063 #ifndef NO_IPV6
00064         struct sockaddr_in6 sin6;
00065 #endif
00066 #ifndef NO_UNIXSOCK
00067         struct sockaddr_un  sun;
00068 #endif /* OS_UNIX */
00069     } sa;
00070 };
00071 
00072 typedef struct u_net_addr_s u_net_addr_t;
00073 
00074 /* socket creation semantics: server or client (the 'mode' in u_net_sock) */
00075 enum { U_NET_SSOCK, U_NET_CSOCK };
00076 
00077 /* I/O */
00078 typedef ssize_t (*iof_t) (int, void *, size_t);
00079 
00080 int u_net_io (iof_t f, int sd, void *buf, size_t l, ssize_t *n, int *iseof);
00081 
00088 #define u_net_write(sd, buf, nbytes, nw, iseof) \
00089     u_net_io((iof_t) write, sd, buf, nbytes, nw, iseof)
00090 
00092 #define u_net_read(sd, buf, nbytes, nw, iseof) \
00093     u_net_io(read, sd, buf, nbytes, nw, iseof)
00094 
00096 #define u_net_writen(sd, buf, nbytes) \
00097     u_net_io((iof_t) write, sd, buf, nbytes, 0, 0)
00098 
00100 #define u_net_readn(sd, buf, nbytes) \
00101     u_net_io(read, sd, buf, nbytes, 0, 0)
00102 
00107 /* hi-level socket creation */
00108 int u_net_sock (const char *uri, int mode);
00109 int u_net_sock_tcp (u_net_addr_t *addr, int mode);
00110 int u_net_sock_udp (u_net_addr_t *addr, int mode);
00111 int u_net_sock_unix (u_net_addr_t *addr, int mode);
00112 
00113 /* low-level socket creation */
00114 int u_net_tcp4_ssock (struct sockaddr_in *sad, int reuse, int backlog);
00115 int u_net_tcp4_csock (struct sockaddr_in *sad);
00116 #ifndef NO_IPV6
00117 int u_net_tcp6_ssock (struct sockaddr_in6 *sad, int reuse, int backlog);
00118 int u_net_tcp6_csock (struct sockaddr_in6 *sad);
00119 #endif
00120 
00121 /* address translation: uri string -> u_uri -> u_net_addr -> struct sockaddr */
00122 int u_net_uri2addr (const char *uri, u_net_addr_t **pa);
00123 int u_net_uri2sin (u_uri_t *uri, struct sockaddr_in *sad);
00124 #ifndef NO_UNIXSOCK
00125 int u_net_uri2sun (u_uri_t *uri, struct sockaddr_un *sad);
00126 #endif /* OS_UNIX */
00127 
00128 /* u_net_addr */
00129 int u_net_addr_new (int type, u_net_addr_t **pa);
00130 void u_net_addr_free (u_net_addr_t *addr);
00131 
00132 #ifdef __cplusplus
00133 }
00134 #endif
00135 
00136 #endif /* !_U_NET_H_ */

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© 2005-2006 - KoanLogic S.r.l. - All rights reserved