linux 脚本socket通信,Linux中使用C语言实现基于UDP协议的Socket通信示例

一时失言乱红尘 2023-01-19 15:59 156阅读 0赞

linux下udp服务器端源码示例：

\#include

int main(int argc, char \*\*argv)

printf("server ip: %s/n", argv\[1\]);

printf("server port: %s/n", argv\[2\]);

printf("/n service starting.../n/n");

int socketFd;

struct sockaddr\_in svrAddr;

struct sockaddr\_in localAddr;

socketFd = socket (AF\_INET, SOCK\_DGRAM, 0);

if ( -1 == socketFd )

perror( "socket:" );

exit(-1);

// 设置地址可复用

int option = 1;

setsockopt( socketFd, SOL\_SOCKET, SO\_REUSEADDR, &option, sizeof(option) );

// 客户端IP

memset(&localAddr, 0, sizeof(localAddr));

localAddr.sin\_family = AF\_INET;

localAddr.sin\_addr.s\_addr = inet\_addr( argv\[1\]);

localAddr.sin\_port = htons (atoi(argv\[2\]));

int bindResult = bind(socketFd, (struct sockaddr \*) &localAddr, sizeof(localAddr));

if ( -1 == bindResult )

perror( "bind:" );

close(socketFd);

exit(-1);

// 服务器IP

memset(&svrAddr, 0, sizeof(svrAddr));

svrAddr.sin\_family = AF\_INET;

svrAddr.sin\_addr.s\_addr = inet\_addr( argv\[1\]);

svrAddr.sin\_port = htons (atoi(argv\[2\]));

char tempBuff\[2048\] = \{0\};

for ( ; ; )

// 接收数据

struct sockaddr\_in fromAddr;

memset((char \*)&fromAddr, 0, (int)sizeof(fromAddr));

socklen\_t fromLen = sizeof(fromAddr);

ssize\_t result = recvfrom( socketFd, tempBuff, sizeof(tempBuff), 0, (struct sockaddr \*)&fromAddr, &fromLen);

if ( -1 == result )

perror("recvfrom:");

continue;

else

printf( "recv data %s successed. data len: %d/n", inet\_ntoa(fromAddr.sin\_addr), result );

printf( "data:/n");

for ( int i = 0; i < result; i++ )

printf( "%02x ", tempBuff\[i\] );

if ( (i+1)%16 == 0 )

printf( "/n" );

// 发送数据

result = sendto( socketFd, tempBuff, result, 0, (struct sockaddr\*)&fromAddr, sizeof(fromAddr));

if ( -1 == result )

perror("sendto:");

else

printf("send data success. data len:%d/n", result );

sleep( 60 );

close(socketFd);

linux下udp客户端源码示例：

\#include

typedef struct \_NSS\_HEADER

unsigned short ProtocolVersion; /\* 协议版本信息 \*/

unsigned short MsgType; /\* 消息类型 \*/

unsigned short TransactionNo; /\* 传输编号 \*/

unsigned short PacketLength; /\* 数据包长度,包括Header \*/

\}NSS\_HEADER;

int main(int argc, char \*\*argv)

printf("client ip: %s/n", argv\[1\]);

printf("client port: %s/n", argv\[2\]);

printf("server ip: %s/n", argv\[3\]);

printf("server port: %s/n", argv\[4\]);

printf("/n service starting.../n/n");

int socketFd;

struct sockaddr\_in svrAddr;

struct sockaddr\_in localAddr;

socketFd = socket (AF\_INET, SOCK\_DGRAM, 0);

if ( -1 == socketFd )

perror( "socket:" );

exit(-1);

// 设置地址可复用

int option = 1;

setsockopt( socketFd, SOL\_SOCKET, SO\_REUSEADDR, &option, sizeof(option) );

// 客户端IP

memset(&localAddr, 0, sizeof(localAddr));

localAddr.sin\_family = AF\_INET;

localAddr.sin\_addr.s\_addr = inet\_addr( argv\[1\]);

localAddr.sin\_port = htons (atoi(argv\[2\]));

int bindResult = bind(socketFd, (struct sockaddr \*) &localAddr, sizeof(localAddr));

if ( -1 == bindResult )

perror( "bind:" );

sleep(10);

close(socketFd);

exit(-1);

// 服务器IP

memset(&svrAddr, 0, sizeof(svrAddr));

svrAddr.sin\_family = AF\_INET;

svrAddr.sin\_addr.s\_addr = inet\_addr( argv\[3\]);

svrAddr.sin\_port = htons (atoi(argv\[4\]));

char tempBuff\[2048\] = \{0\};

// 每分钟发送一次数据

NSS\_HEADER hdr;

memset( &hdr, 0, sizeof(NSS\_HEADER));

for ( ; ; )

// 发送数据

hdr.TransactionNo++;

ssize\_t result = sendto( socketFd, &hdr, sizeof(NSS\_HEADER), 0, (struct sockaddr\*)&svrAddr, sizeof(svrAddr));

if ( -1 == result )

perror("sendto:");

else

printf("send data success. data len:%d/n", result );

// 接收数据

struct sockaddr\_in fromAddr;

memset((char \*)&fromAddr, 0, (int)sizeof(fromAddr));

socklen\_t fromLen = sizeof(fromAddr);

result = recvfrom( socketFd, tempBuff, sizeof(tempBuff), 0, (struct sockaddr \*)&fromAddr, &fromLen);

if ( -1 == result )

perror("recvfrom:");

else

printf( "recv data %s successed. data len: %d/n", inet\_ntoa(fromAddr.sin\_addr), result );

printf( "data:/n");

for ( int i = 0; i < result; i++ )

printf( "%02x ", tempBuff\[i\] );

if ( (i+1)%16 == 0 )

printf( "/n" );

printf("/n");

sleep( 60 );

close(socketFd);

linux 脚本socket通信,Linux中使用C语言实现基于UDP协议的Socket通信示例

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