windows 的自定义消息记录器的实现：拔下 ntwk 电缆时报告 10049
Implementation of custom message logger for windows : reports 10049 when ntwk cable unplugged
正在尝试为 windows 开发 simple/small 系统日志服务器。
此实现只是将来自同一台机器的 2 个其他进程的 LOGS 存储在同一台机器中。
希望这类似于 LINUX implementation.Started 使用 UDP DATAGRAM 在进程之间发送数据。
一切正常。但是，已经注意到当拔下网络电缆时，消息不会从客户端进程应用程序到达服务器。
客户端进程报10049错误（网线拔掉时）
请求一些指导如何在本地进程之间进行这项工作。因为，我所有的进程 运行 在本地机器上。
服务器结束侦听代码：
int main(int argc,char *argv[])
{
SOCKET s;
FILE *fp;
struct sockaddr_in server, si_other;
int slen , recv_len;
char buf[BUFLEN];
WSADATA wsa;
struct stat sts;
char fileNameWithPath[512]={'[=11=]'};
int status;
printf("ARGC %d\n",argc);
char a[10];
strcpy(logBasePath,"C:\log\");
if(argc == 1)
{
//parseSyslogConfiguration();
if (loggingLevel > 4)
loggingLevel=DEBUG_LOG;
}
else
{
memset(a,0,sizeof(a));
strncpy(a,argv[1],1);
int isnum=isdigit(a[0]);
printf("len argv : %d , isdigit : %d\n",strlen(argv[1]),isnum);
//parseSyslogConfiguration();
if(strlen(argv[1]) == 1 && isnum == 1)
{
loggingLevel = atoi(argv[1]);
if (loggingLevel > 4)
loggingLevel=DEBUG_LOG;
printf("Current Log level initaited : %d",loggingLevel);
}
else
{
loggingLevel=DEBUG_LOG;
printf("Invalid arg (%s)for syslog server setting log level to DEBUG\n",argv[1]);
printf("Values can be from : 0-4 \n");
}
}
if(buf[strlen(logBasePath)-1] != '\')
{
printf("ADDING END SLASH\n");
strncat(logBasePath,"\",1);
}
else
printf("NOT ADDING END SLASH\n");
//g_thread_init(NULL);
//write_mutex = g_mutex_new();
slen = sizeof(si_other) ;
getdatetime(&dateinfo);
strcpy(logFileName,"syslog");
memset(fileNameWithPath,0,sizeof(fileNameWithPath));
strcat(fileNameWithPath,logBasePath);
strcat(fileNameWithPath,logFileName);
//strcat(fileNameWithPath,logFileName,logBasePath,"syslog");
status = stat(fileNameWithPath, &sts);
if(errno == ENOENT)
{
fp = fopen(fileNameWithPath, "a+");
logMessage(fp,dateinfo.syslogTimeFormat,"LOGROTATE","[origin software='TEST']",0);
fclose(fp);
}
getdatetime(&dateinfo);
setSyslogFileDate(logBasePath);
//Initialise winsock
printf("\nInitialising Winsock...");
if (WSAStartup(MAKEWORD(2,2),&wsa) != 0)
{
printf("Failed. Error Code : %d",WSAGetLastError());
exit(EXIT_FAILURE);
}
printf("Initialised.\n");
//Create a socket
if((s = socket(AF_UNIX , SOCK_DGRAM , 0 )) == INVALID_SOCKET)
{
printf("Could not create socket : %d" , WSAGetLastError());
}
printf("Socket created.\n");
//Prepare the sockaddr_in structure
server.sin_family = AF_UNIX;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( PORT );
//Bind
if( bind(s ,(struct sockaddr *)&server , sizeof(server)) == SOCKET_ERROR)
{
printf("Bind failed with error code : %d" , WSAGetLastError());
exit(EXIT_FAILURE);
}
puts("Bind done");
//msgQueueId = g_queue_new();
//g_queue_init(msgQueueId);
// syslogFileWriteThreadId = g_thread_create(ProcessLogMsgfunc, NULL, TRUE, &error);
// syslogRotateThreadId = g_thread_create(syslogRotateMonitor, NULL, TRUE, &error);
//keep listening for data
while(1)
{
fflush(stdout);
memset(buf,'[=11=]', BUFLEN);
if ((recv_len = recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *) &si_other, &slen)) == SOCKET_ERROR)
{
printf("recvfrom() failed with error code : %d" , WSAGetLastError());
exit(EXIT_FAILURE);
}
LOGSTRUCT *qMsg = NULL;
memset(&message,0,sizeof(LOGSTRUCT));
qMsg = malloc(sizeof(LOGSTRUCT));
memset(qMsg,0,sizeof(LOGSTRUCT));
memcpy(qMsg,&buf,sizeof(LOGSTRUCT));
PostMessageQ(qMsg);
}
// g_mutex_free(write_mutex);
// g_queue_free(msgQueueId);
closesocket(s);
WSACleanup();
// g_thread_join(syslogFileWriteThreadId);
// g_thread_join(syslogRotateThreadId);
return 0;
}
客户端实施：
#include<stdio.h>
#include<winsock2.h>
//#include <glib.h>
#define DEBUG_LOG 0
#define TRACE_LOG 1
#define WARNING_LOG 2
#define ERROR_LOG 3
#define FATAL_LOG 4
#pragma comment(lib,"ws2_32.lib") //Winsock Library
#define SERVER "127.0.0.1" //ip address of udp server
#define BUFLEN 4096 //Max length of buffer
#define PORT 514 //The port on which to listen for incoming data
#define RUN_SERVER 1
struct sockaddr_in si_other;
int s;
GMutex *write_mutex = NULL;
static char appLogName[128] = {'0'};
typedef enum{
LOGINIT,
LOGMESSAGE,
LOGTRACE,
LOGEXIT
}logCommand;
typedef struct
{
logCommand command;
int logLevel;
int pid;
char appName[128];
char loggerMessage[3200];
}LOGSTRUCT, *LPLOGSTRUCT;
int log_init(char *infoName,int level)
{
int ret=0;
WSADATA wsa;
//if(write_mutex == NULL)
//{
//g_thread_init(NULL);
//write_mutex = g_mutex_new();
//Initialise winsock
if(strlen(infoName) == 0 && strlen(appLogName) == 0)
{
strcpy(appLogName,"ATM");
}
else
{
strcpy(appLogName,infoName);
}
//create socket
if ( (s=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == SOCKET_ERROR)
{
printf("socket() failed with error code : %d" , WSAGetLastError());
//exit(EXIT_FAILURE);
return -1;
}
//int nOpt=1;
//setsockopt(s, SOL_SOCKET, SO_BROADCAST, (char*)&nOpt, sizeof(int));
//setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char*)&nOpt, sizeof(int));
//setup address structure
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
si_other.sin_addr.S_un.S_addr = INADDR_ANY;
//si_other.sin_addr.S_un.S_addr = inet_addr(SERVER);
// si_other.sin_addr.S_un.S_addr = INADDR_BROADCAST ;
// si_other.sin_addr.s_addr = INADDR_ANY;
//}
return 0;
}
void log_exit()
{
RUN_SERVER=0;
closesocket(s);
WSACleanup();
}
void ms_log(char *buf,int priority)
{
debug_log(buf,priority);
}
void debug_log(char *buf,int priority)
{
//g_mutex_lock(write_mutex);
int ret = 0;
LOGSTRUCT log;
memset(&log,0,sizeof(LOGSTRUCT));
log.command=LOGMESSAGE;
log.logLevel=priority;
log.pid = GetCurrentProcessId();
if(strlen(appLogName))
{
strcpy(log.appName,appLogName);
}
if(strlen(buf))
{
strcpy(log.loggerMessage,buf);
ret=sendDataPacket(&log , sizeof(LOGSTRUCT));
}
//g_mutex_unlock(write_mutex);
}
int sendDataPacket(LOGSTRUCT *data , int dataLength)
{
BOOL bResult;
DWORD cbBytes;
int slen;
slen=sizeof(si_other);
if (sendto(s, data, dataLength , 0 , (struct sockaddr *) &si_other, slen) == SOCKET_ERROR)
{
printf("sendto() failed with error code : %d" , WSAGetLastError());
return -1;
}
return 0;
}
int main(void)
{
char buf[BUFLEN];
char message[BUFLEN];
WSADATA wsa;
LOGSTRUCT log;
//start communication
printf("\nInitialising Winsock...");
if (WSAStartup(MAKEWORD(2,2),&wsa) != 0)
{
printf("Failed. Error Code : %d",WSAGetLastError());
//exit(EXIT_FAILURE);
return -2;
}
printf("Initialised.\n");
log_init("TESTVEN",1);
while(RUN_SERVER)
{
printf("Enter message : ");
gets(message);
log.command = LOGMESSAGE;
strcpy(log.appName,"TESTAPP");
log.logLevel=DEBUG_LOG;
log.pid=GetCurrentProcessId();
strcpy(log.loggerMessage,message);
sendDataPacket(&log,sizeof(LOGSTRUCT));
//send the message
}
log_exit();
return 0;
}
错误代码 10049：WSAEADDRNOTAVAIL：无法分配请求的地址。
The requested address is not valid in its context. This normally results from an attempt to bind to an address that is not valid for the local computer. This can also result from connect, sendto, WSAConnect, WSAJoinLeaf, or WSASendTo when the remote address or port is not valid for a remote computer (for example, address or port 0).
sendto 也可能发生这种情况。远程地址 IP_ADDR_ANY 在电缆拔出时不再是有效地址？
如果它在同一台机器上，也尝试 127.0.0.1 服务器代码？
正在尝试为 windows 开发 simple/small 系统日志服务器。 此实现只是将来自同一台机器的 2 个其他进程的 LOGS 存储在同一台机器中。
希望这类似于 LINUX implementation.Started 使用 UDP DATAGRAM 在进程之间发送数据。
一切正常。但是，已经注意到当拔下网络电缆时，消息不会从客户端进程应用程序到达服务器。
客户端进程报10049错误（网线拔掉时） 请求一些指导如何在本地进程之间进行这项工作。因为，我所有的进程 运行 在本地机器上。
服务器结束侦听代码：
int main(int argc,char *argv[])
{
SOCKET s;
FILE *fp;
struct sockaddr_in server, si_other;
int slen , recv_len;
char buf[BUFLEN];
WSADATA wsa;
struct stat sts;
char fileNameWithPath[512]={'[=11=]'};
int status;
printf("ARGC %d\n",argc);
char a[10];
strcpy(logBasePath,"C:\log\");
if(argc == 1)
{
//parseSyslogConfiguration();
if (loggingLevel > 4)
loggingLevel=DEBUG_LOG;
}
else
{
memset(a,0,sizeof(a));
strncpy(a,argv[1],1);
int isnum=isdigit(a[0]);
printf("len argv : %d , isdigit : %d\n",strlen(argv[1]),isnum);
//parseSyslogConfiguration();
if(strlen(argv[1]) == 1 && isnum == 1)
{
loggingLevel = atoi(argv[1]);
if (loggingLevel > 4)
loggingLevel=DEBUG_LOG;
printf("Current Log level initaited : %d",loggingLevel);
}
else
{
loggingLevel=DEBUG_LOG;
printf("Invalid arg (%s)for syslog server setting log level to DEBUG\n",argv[1]);
printf("Values can be from : 0-4 \n");
}
}
if(buf[strlen(logBasePath)-1] != '\')
{
printf("ADDING END SLASH\n");
strncat(logBasePath,"\",1);
}
else
printf("NOT ADDING END SLASH\n");
//g_thread_init(NULL);
//write_mutex = g_mutex_new();
slen = sizeof(si_other) ;
getdatetime(&dateinfo);
strcpy(logFileName,"syslog");
memset(fileNameWithPath,0,sizeof(fileNameWithPath));
strcat(fileNameWithPath,logBasePath);
strcat(fileNameWithPath,logFileName);
//strcat(fileNameWithPath,logFileName,logBasePath,"syslog");
status = stat(fileNameWithPath, &sts);
if(errno == ENOENT)
{
fp = fopen(fileNameWithPath, "a+");
logMessage(fp,dateinfo.syslogTimeFormat,"LOGROTATE","[origin software='TEST']",0);
fclose(fp);
}
getdatetime(&dateinfo);
setSyslogFileDate(logBasePath);
//Initialise winsock
printf("\nInitialising Winsock...");
if (WSAStartup(MAKEWORD(2,2),&wsa) != 0)
{
printf("Failed. Error Code : %d",WSAGetLastError());
exit(EXIT_FAILURE);
}
printf("Initialised.\n");
//Create a socket
if((s = socket(AF_UNIX , SOCK_DGRAM , 0 )) == INVALID_SOCKET)
{
printf("Could not create socket : %d" , WSAGetLastError());
}
printf("Socket created.\n");
//Prepare the sockaddr_in structure
server.sin_family = AF_UNIX;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( PORT );
//Bind
if( bind(s ,(struct sockaddr *)&server , sizeof(server)) == SOCKET_ERROR)
{
printf("Bind failed with error code : %d" , WSAGetLastError());
exit(EXIT_FAILURE);
}
puts("Bind done");
//msgQueueId = g_queue_new();
//g_queue_init(msgQueueId);
// syslogFileWriteThreadId = g_thread_create(ProcessLogMsgfunc, NULL, TRUE, &error);
// syslogRotateThreadId = g_thread_create(syslogRotateMonitor, NULL, TRUE, &error);
//keep listening for data
while(1)
{
fflush(stdout);
memset(buf,'[=11=]', BUFLEN);
if ((recv_len = recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *) &si_other, &slen)) == SOCKET_ERROR)
{
printf("recvfrom() failed with error code : %d" , WSAGetLastError());
exit(EXIT_FAILURE);
}
LOGSTRUCT *qMsg = NULL;
memset(&message,0,sizeof(LOGSTRUCT));
qMsg = malloc(sizeof(LOGSTRUCT));
memset(qMsg,0,sizeof(LOGSTRUCT));
memcpy(qMsg,&buf,sizeof(LOGSTRUCT));
PostMessageQ(qMsg);
}
// g_mutex_free(write_mutex);
// g_queue_free(msgQueueId);
closesocket(s);
WSACleanup();
// g_thread_join(syslogFileWriteThreadId);
// g_thread_join(syslogRotateThreadId);
return 0;
}
客户端实施：
#include<stdio.h>
#include<winsock2.h>
//#include <glib.h>
#define DEBUG_LOG 0
#define TRACE_LOG 1
#define WARNING_LOG 2
#define ERROR_LOG 3
#define FATAL_LOG 4
#pragma comment(lib,"ws2_32.lib") //Winsock Library
#define SERVER "127.0.0.1" //ip address of udp server
#define BUFLEN 4096 //Max length of buffer
#define PORT 514 //The port on which to listen for incoming data
#define RUN_SERVER 1
struct sockaddr_in si_other;
int s;
GMutex *write_mutex = NULL;
static char appLogName[128] = {'0'};
typedef enum{
LOGINIT,
LOGMESSAGE,
LOGTRACE,
LOGEXIT
}logCommand;
typedef struct
{
logCommand command;
int logLevel;
int pid;
char appName[128];
char loggerMessage[3200];
}LOGSTRUCT, *LPLOGSTRUCT;
int log_init(char *infoName,int level)
{
int ret=0;
WSADATA wsa;
//if(write_mutex == NULL)
//{
//g_thread_init(NULL);
//write_mutex = g_mutex_new();
//Initialise winsock
if(strlen(infoName) == 0 && strlen(appLogName) == 0)
{
strcpy(appLogName,"ATM");
}
else
{
strcpy(appLogName,infoName);
}
//create socket
if ( (s=socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == SOCKET_ERROR)
{
printf("socket() failed with error code : %d" , WSAGetLastError());
//exit(EXIT_FAILURE);
return -1;
}
//int nOpt=1;
//setsockopt(s, SOL_SOCKET, SO_BROADCAST, (char*)&nOpt, sizeof(int));
//setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char*)&nOpt, sizeof(int));
//setup address structure
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
si_other.sin_addr.S_un.S_addr = INADDR_ANY;
//si_other.sin_addr.S_un.S_addr = inet_addr(SERVER);
// si_other.sin_addr.S_un.S_addr = INADDR_BROADCAST ;
// si_other.sin_addr.s_addr = INADDR_ANY;
//}
return 0;
}
void log_exit()
{
RUN_SERVER=0;
closesocket(s);
WSACleanup();
}
void ms_log(char *buf,int priority)
{
debug_log(buf,priority);
}
void debug_log(char *buf,int priority)
{
//g_mutex_lock(write_mutex);
int ret = 0;
LOGSTRUCT log;
memset(&log,0,sizeof(LOGSTRUCT));
log.command=LOGMESSAGE;
log.logLevel=priority;
log.pid = GetCurrentProcessId();
if(strlen(appLogName))
{
strcpy(log.appName,appLogName);
}
if(strlen(buf))
{
strcpy(log.loggerMessage,buf);
ret=sendDataPacket(&log , sizeof(LOGSTRUCT));
}
//g_mutex_unlock(write_mutex);
}
int sendDataPacket(LOGSTRUCT *data , int dataLength)
{
BOOL bResult;
DWORD cbBytes;
int slen;
slen=sizeof(si_other);
if (sendto(s, data, dataLength , 0 , (struct sockaddr *) &si_other, slen) == SOCKET_ERROR)
{
printf("sendto() failed with error code : %d" , WSAGetLastError());
return -1;
}
return 0;
}
int main(void)
{
char buf[BUFLEN];
char message[BUFLEN];
WSADATA wsa;
LOGSTRUCT log;
//start communication
printf("\nInitialising Winsock...");
if (WSAStartup(MAKEWORD(2,2),&wsa) != 0)
{
printf("Failed. Error Code : %d",WSAGetLastError());
//exit(EXIT_FAILURE);
return -2;
}
printf("Initialised.\n");
log_init("TESTVEN",1);
while(RUN_SERVER)
{
printf("Enter message : ");
gets(message);
log.command = LOGMESSAGE;
strcpy(log.appName,"TESTAPP");
log.logLevel=DEBUG_LOG;
log.pid=GetCurrentProcessId();
strcpy(log.loggerMessage,message);
sendDataPacket(&log,sizeof(LOGSTRUCT));
//send the message
}
log_exit();
return 0;
}
错误代码 10049：WSAEADDRNOTAVAIL：无法分配请求的地址。
The requested address is not valid in its context. This normally results from an attempt to bind to an address that is not valid for the local computer. This can also result from connect, sendto, WSAConnect, WSAJoinLeaf, or WSASendTo when the remote address or port is not valid for a remote computer (for example, address or port 0).
sendto 也可能发生这种情况。远程地址 IP_ADDR_ANY 在电缆拔出时不再是有效地址？
如果它在同一台机器上，也尝试 127.0.0.1 服务器代码？