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P2PClient.cpp
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P2PClient.cpp
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#include <unistd.h>
#include <string.h>
#include <string>
#include <vector>
#include <pthread.h>
#include "Socket.h"
#include "common.h"
using namespace std;
#define BUFLEN_MAX 10000
#define MENU_BUFLEN 10
#define CMD_BUFLEN 30
#define NAMELEN_MAX 50
#define MAX_WAIT_COUNT 4
#define DEFAULT_RECV_TIME 5
#define THREAD_SLEEP_TIME_MS 20
enum INTERACT
{
INTERACT_MAIN_MENU,
INTERACT_ROOM_MENU,
};
char *arrInteract[] = {
" [1] Join the room\n\
[2] Exit\n",
" [1] List all users.\n\
[2] Select one to chat.\n\
[3] Exit room."
};
enum CLIENT_STATUS
{
STATUS_INIT,
STATUS_EXIT,
STATUS_JOIN_ROOM,
STATUS_EXIT_ROOM,
STATUS_CHATTING,
};
enum NAT_TYPE
{
NAT_CONE, // 锥形NAT
NAT_SYMMETRY, // 对称NAT
};
static void *RoomListenThread(void *arg);
class CP2PClient
{
public:
CP2PClient(char *userName, char *serverIP, char *serverPort)
:m_objSocket(SOCK_DGRAM, AF_INET, DEFAULT_RECV_TIME),
m_userName(userName),
m_serverIP(serverIP),
m_serverPort(serverPort),
m_clientStatus(STATUS_INIT),
m_natType(NAT_CONE)
{
pthread_mutex_init(&m_threadLock,NULL);
pthread_mutex_init(&m_scanfLock,NULL);
}
virtual ~CP2PClient()
{
pthread_mutex_destroy(&m_threadLock);
pthread_mutex_destroy(&m_scanfLock);
}
int ReadAndSend()
{
char buf[BUFLEN_MAX] = {0};
while(1)
{
printf("please input content (\"quit\" to exit): \n");
scanf("%s", buf);
printf("\n");
if (strcmp(buf, "quit") == 0)
break;
m_objSocket.SendTo(buf, BUFLEN_MAX, m_serverIP, m_serverPort);
usleep(300);
}
}
int BeginChat()
{
char key[MENU_BUFLEN] = {0};
while(1)
{
printf("%s\n", arrInteract[INTERACT_MAIN_MENU]);
scanf("%s", key);
__ParseMainMenu(key);
if (STATUS_EXIT == m_clientStatus)
break;
memset(key, 0, MENU_BUFLEN);
usleep(300);
}
return 0;
}
void UpdateNatType(char *server1, char *port1, char *server2, char *port2)
{
int status = 0;
char recvBuf1[BUFLEN_MAX] = {0};
char recvBuf2[BUFLEN_MAX] = {0};
printf("arrCmd[CMD_QUERY_SELF_ADDR] = %s, size = %d\n", arrCmd[CMD_QUERY_SELF_ADDR], strlen(arrCmd[CMD_QUERY_SELF_ADDR]));
status = m_objSocket.SendTo(arrCmd[CMD_QUERY_SELF_ADDR], strlen(arrCmd[CMD_QUERY_SELF_ADDR]), server1, atoi(port1));
status |= m_objSocket.RecvFrom(recvBuf1, BUFLEN_MAX, NULL);
status |= m_objSocket.SendTo(arrCmd[CMD_QUERY_SELF_ADDR], strlen(arrCmd[CMD_QUERY_SELF_ADDR]), server2, atoi(port2));
status |= m_objSocket.RecvFrom(recvBuf2, BUFLEN_MAX, NULL);
if (SOCK_SUCCESS != status)
return;
LOG("recvBuf1 = %s\n recvBuf2 = %s\n", recvBuf1, recvBuf2);
if (strstr(recvBuf1, arrCmd[CMD_QUERY_SELF_ADDR+1]) != NULL &&
strstr(recvBuf2, arrCmd[CMD_QUERY_SELF_ADDR+1]) != NULL &&
strcmp(recvBuf1, recvBuf2) != 0)
{
LOG("change m_natType to NAT_SYMMETRY\n");
m_natType = NAT_SYMMETRY;
}
}
void __ParseRoomerInfo(char *info)
{
m_vecUserList.clear();
string strInfo(info);
vector<string> vecUserInfo;
string::size_type position;
int pos_begin = 0;
while((position = strInfo.find("\n", position)) != string::npos)
{
vecUserInfo.push_back(string(strInfo, pos_begin, position - pos_begin));
position++;
pos_begin = position;
}
string::size_type position1 = 0;
string::size_type position2 = 0;
position = 0;
for(int i = 0; i < vecUserInfo.size(); i++)
{
printf("vecUserInfo: %s\n", vecUserInfo[i].c_str());
position1 = vecUserInfo[i].find(",", 0);
position2 = vecUserInfo[i].find(",", position1 + 1);
position = vecUserInfo[i].find("name: ", 0);
string name(vecUserInfo[i], position+strlen("name: "), position1-position-strlen("name: "));
position = vecUserInfo[i].find("ip: ", 0);
string ip(vecUserInfo[i], position+strlen("ip: "), position2-position-strlen("ip: "));
position = vecUserInfo[i].find("port: ", 0);
int port = atoi(string(vecUserInfo[i], position+strlen("port: ")).c_str());
//printf("vec: name:%s; ip:%s; port:%d;\n", name.c_str(), ip.c_str(), port);
m_vecUserList.push_back(CUser(name, ip, port));
}
}
// if no data, please input NULL
int __SendCommand(COMMAND_TYPE cmd, const char *sendData, char *recvData)
{
char buf[BUFLEN_MAX] = {0};
string strCMD = string(arrCmd[cmd]);
if (NULL != sendData)
strCMD += string(sendData);
pthread_mutex_lock(&m_threadLock);
LOG("__SendCommand buf : %s\n", strCMD.c_str());
m_objSocket.SendTo(strCMD.c_str(), strCMD.size(), m_serverIP, m_serverPort);
struct sockaddr_in addr;
int status = m_objSocket.RecvFrom(buf, BUFLEN_MAX, (struct sockaddr *)&addr);
pthread_mutex_unlock(&m_threadLock);
if (SOCK_SUCCESS != status)
{
LOG("recv ACK failed!\n");
return -1;
}
if (strstr(buf, arrCmd[cmd+1]) != NULL)
{
printf("%s execute success!\n", arrCmd[cmd]);
if (NULL != recvData && strlen(buf) != strlen(arrCmd[cmd+1]))
strcpy(recvData, buf+strlen(arrCmd[cmd+1]));
return 0;
}
else
{
printf("cmd recv = %s\n", buf);
printf("%s execute failed!\n", arrCmd[cmd]);
return -1;
}
}
private:
void __StepIntoChat()
{
m_clientStatus = STATUS_JOIN_ROOM;
char key[MENU_BUFLEN] = {0};
while(1)
{
pthread_mutex_lock(&m_scanfLock);
printf("%s\n", arrInteract[INTERACT_ROOM_MENU]);
scanf("%s", key);
if (m_clientStatus != STATUS_CHATTING)
__ParseRoomMenu(key);
memset(key, 0, MENU_BUFLEN);
if (m_clientStatus == STATUS_EXIT_ROOM)
break;
pthread_mutex_unlock(&m_scanfLock);
usleep(300);
}
}
void __ParseMainMenu(char *key)
{
int nKey = atoi(key);
int status;
int tStatus;
switch(nKey)
{
case 1:
status = __SendCommand(CMD_JOIN, m_userName, NULL);
if(status == 0)
{
if ((tStatus = pthread_create(&m_listenThread, NULL, RoomListenThread, this)) != 0)
{
printf("pthread_create failed, erroNum = %d\n", tStatus);
printf("Join the room failed!\n");
break;
}
__StepIntoChat();
}
break;
case 2:
m_clientStatus = STATUS_EXIT;
break;
default:
break;
}
}
void __ParseRoomMenu(char *key)
{
int nKey = atoi(key);
int status;
char recvData[BUFLEN_MAX] = {0};
char frientName[NAMELEN_MAX] = {0};
vector<CUser>::iterator iter;
switch(nKey)
{
case 1:
status = __SendCommand(CMD_LIST_USERS, NULL, recvData);
if(status == 0)
printf("%s\n", recvData);
break;
case 2:
{
status = __SendCommand(CMD_LIST_USERS, NULL, recvData);
__ParseRoomerInfo(recvData);
memset(recvData, 0, BUFLEN_MAX);
printf("please input the name to chat: \n");
scanf("%s", frientName);
for (iter = m_vecUserList.begin(); iter != m_vecUserList.end(); iter++)
{
if (iter->strUserName.find(frientName) != string::npos)
{
break;
}
}
if (iter == m_vecUserList.end())
break;
string strChat = string(m_userName)+string("+")+string(frientName);
status = __SendCommand(CMD_BEGIN_CHAT, strChat.c_str(), recvData);
string strData(m_userName);
strData += string(" trying connecting...");
printf("SendTo ip->%s, port->%d, Data: %s\n", iter->strUserIP.c_str(), iter->nUserPort, strData.c_str());
m_objSocket.SendTo(strData.c_str(), strData.size(), iter->strUserIP.c_str(), iter->nUserPort);
int nCount = 0;
char charAckBuf[CMD_BUFLEN] = {0};
struct sockaddr_in apply_addr;
do
{
status = m_objSocket.RecvFrom(charAckBuf, CMD_BUFLEN, (struct sockaddr *)&apply_addr);
nCount++;
} while (status != 0 && nCount < MAX_WAIT_COUNT);
if (nCount != MAX_WAIT_COUNT)
printf("chat apply ack buf: %s, ip->%s, port->%d\n", charAckBuf, inet_ntoa(apply_addr.sin_addr), ntohs(apply_addr.sin_port));
if (nCount != MAX_WAIT_COUNT &&
strcmp(inet_ntoa(apply_addr.sin_addr), iter->strUserIP.c_str()) == 0 &&
ntohs(apply_addr.sin_port) == iter->nUserPort &&
strcmp(charAckBuf, arrCmd[CMD_CHAT_AGREE]) == 0)
{
printf("applyer agree chat!\n");
}
}
break;
case 3:
status = __SendCommand(CMD_EXIT_ROOM, m_userName, NULL);
m_clientStatus = STATUS_EXIT_ROOM;
pthread_mutex_unlock(&m_scanfLock);
pthread_join(m_listenThread, NULL);
break;
default:
break;
}
}
private:
char *m_userName;
char *m_serverIP;
char *m_serverPort;
pthread_t m_listenThread;
public:
CSocket m_objSocket;
int m_clientStatus;
pthread_mutex_t m_threadLock;
pthread_mutex_t m_scanfLock;
vector<CUser> m_vecUserList;
int m_natType;
};
static void *RoomListenThread(void *arg)
{
CP2PClient *client = (CP2PClient *)arg;
char recvBuf[BUFLEN_MAX] = {0};
char cmdData[NAMELEN_MAX] = {0};
char scanfBuf[CMD_BUFLEN] = {0};
struct sockaddr_in addr;
int status = 0;
while(client->m_clientStatus != STATUS_EXIT_ROOM)
{
memset(recvBuf, 0, BUFLEN_MAX);
memset(cmdData, 0, NAMELEN_MAX);
pthread_mutex_lock(&client->m_threadLock);
client->m_objSocket.SetTimeOut(0, 1000 * THREAD_SLEEP_TIME_MS);
status = client->m_objSocket.RecvFrom(recvBuf, BUFLEN_MAX, (struct sockaddr *)&addr);
if (status != SOCK_SUCCESS)
{
//printf("RoomListenThread: m_objSocket.RecvFrom ----- 0 \n");
client->m_objSocket.SetTimeOut(DEFAULT_RECV_TIME, 0);
pthread_mutex_unlock(&client->m_threadLock);
usleep(1000 * THREAD_SLEEP_TIME_MS);
continue;
}
printf("RoomListenThread buf: %s\n", recvBuf);
int cmd = ParseCmd(recvBuf, cmdData);
if (cmd < 0)
{
client->m_objSocket.SetTimeOut(DEFAULT_RECV_TIME, 0);
pthread_mutex_unlock(&client->m_threadLock);
LOG("ParseCmd failed!\n");
continue;
}
switch (client->m_clientStatus)
{
case STATUS_JOIN_ROOM:
if (cmd == CMD_BEGIN_CHAT)
{
client->m_clientStatus = STATUS_CHATTING;
//pthread_mutex_lock(&client->m_scanfLock);
if (client->m_clientStatus == STATUS_EXIT_ROOM)
break;
printf("%s apply for chatting, (y/n):\n", cmdData);
//scanf("%s", scanfBuf);
//if (strstr(scanfBuf, "y") != NULL)
{
printf("RoomListenThread -------------------- 0\n");
pthread_mutex_unlock(&client->m_threadLock);
char recvData[BUFLEN_MAX] = {0};
if(client->__SendCommand(CMD_LIST_USERS, NULL, recvData) == 0)
client->__ParseRoomerInfo(recvData);
pthread_mutex_lock(&client->m_threadLock);
printf("RoomListenThread -------------------- 2\n");
vector<CUser>::iterator iter;
int status = 0, nCount = 0;
char chatAckBuf[CMD_BUFLEN] = {0};
struct sockaddr_in apply_addr;
printf("RoomListenThread -------------------- 3\n");
for (iter = client->m_vecUserList.begin(); iter != client->m_vecUserList.end(); iter++)
{
if (iter->strUserName.find(cmdData) != string::npos)
if (strcmp(iter->strUserName.c_str(), cmdData) == 0)
{
printf("send agree chat buf: %s, ip->%s, port->%d\n", arrCmd[CMD_CHAT_AGREE], iter->strUserIP.c_str(), iter->nUserPort);
client->m_objSocket.SendTo(arrCmd[CMD_CHAT_AGREE], sizeof(arrCmd[CMD_CHAT_AGREE]), iter->strUserIP.c_str(), iter->nUserPort);
client->m_objSocket.SendTo(arrCmd[CMD_CHAT_AGREE], sizeof(arrCmd[CMD_CHAT_AGREE]), iter->strUserIP.c_str(), iter->nUserPort);
client->m_objSocket.SendTo(arrCmd[CMD_CHAT_AGREE], sizeof(arrCmd[CMD_CHAT_AGREE]), iter->strUserIP.c_str(), iter->nUserPort);
do
{
status = client->m_objSocket.RecvFrom(chatAckBuf, CMD_BUFLEN, (struct sockaddr *)&apply_addr);
nCount++;
} while (status != 0 && nCount < MAX_WAIT_COUNT);
}
}
printf("RoomListenThread -------------------- 4 nCount = %d\n", MAX_WAIT_COUNT);
if (iter != client->m_vecUserList.end() &&
nCount != MAX_WAIT_COUNT &&
strcmp(inet_ntoa(apply_addr.sin_addr), iter->strUserIP.c_str()) == 0 &&
ntohs(apply_addr.sin_port) == iter->nUserPort &&
strcmp(chatAckBuf, arrCmd[CMD_CHAT_AGREE_ACK]) == 0)
{
printf("recver agree chat!\n", iter->strUserName.c_str());
}
printf("RoomListenThread -------------------- 5\n");
}
//pthread_mutex_unlock(&client->m_scanfLock);
}
break;
case STATUS_CHATTING:
break;
}
client->m_clientStatus = STATUS_JOIN_ROOM;
client->m_objSocket.SetTimeOut(DEFAULT_RECV_TIME, 0);
pthread_mutex_unlock(&client->m_threadLock);
usleep(1000 * THREAD_SLEEP_TIME_MS);
}
}
int main(int argc, char* argv[])
{
if (argc < 4)
{
LOG("Usage: ./P2PClient UserName IP Port\n");
return 0;
}
CP2PClient client(argv[1], argv[2], argv[3]);
if (argc > 5)
client.UpdateNatType(argv[2], argv[3], argv[4], argv[5]);
//client.ReadAndSend();
client.BeginChat();
printf("Exit the client!\n");
return 0;
}