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     17.5.1 DatagramPacketŬ·¡½º

 

  DatagramPacketŬ·¡½º´Â µ¥ÀÌÅͱ׷¥ ¼ÒÄÏÀÌ ÁÖ°í¹Þ´Â µ¥ÀÌÅÍ ´ÜÀ§ÀÎ µ¥ÀÌÅͱ׷¥ ÆÐŶÀ» »ý¼ºÇϰí, À̸¦ Á¦¾îÇϱâ À§ÇÑ °ÍÀÔ´Ï´Ù. TCP ÇÁ·Î±×·¡¹Ö °ü·Ã Ŭ·¡½º¿¡¼­´Â ÀÌ¿Í °°Àº ±â´ÉÀ» Çϴ Ŭ·¡½º°¡ ¾ø½À´Ï´Ù. ¶ÇÇÑ DatagramPacketŬ·¡½º¿¡´Â InetAddress(), getAddress(), getData(), getLength(), getPort()µî ±× ÆÐŶÀÇ °¢Á¾ ³»¿ëÀ» ¾Ë¾Æ³»´Â ¸Þ¼­µå¸¦ Æ÷ÇÔÇϰí Àִµ¥, TCP ÇÁ·Î±×·¡¹Ö °ü·Ã Ŭ·¡½º¿¡´Â ÀÌ·± °ÍÀÌ ÀüÇô ¾ø½À´Ï´Ù.

 

DatagramPacket »ý¼ºÀÚ¸Þ¼­µå

DatagramPacket (byte[] buf, int length) : ±æÀ̰¡ length ÀÇ ÆÐŶÀ» ¼ö½Å Çϱâ À§ÇÑ DatagramPacket¸¦ »ý¼ºÇÑ´Ù. 

DatagramPacket (byte[] buf, int length, InetAddress address, int port) : ÁöÁ¤µÈ È£½ºÆ®ÀÇ ÁöÁ¤µÈ Port¹øÈ£¿¡ ±æÀÌ length ÀÇ ÆÐŶÀ» ¼Û½Å Çϱâ À§ÇÑ, µ¥ÀÌÅͱ׷¥ ÆÐŶÀ» »ý¼ºÇÑ´Ù. 

DatagramPacket (byte[] buf, int offset, int length) : ¹öÆÛ¿¡ÀÇ ¿ÀÇÁ¼ÂÀ» ÁöÁ¤ÇØ, ±æÀ̰¡ length ÀÇ ÆÐŶÀ» ¼ö½Å Çϱâ À§ÇÑ DatagramPacket¸¦ »ý¼ºÇÑ´Ù. 

DatagramPacket (byte[] buf, int offset, int length, InetAddress address, int port) : ±æÀ̰¡ length·Î ¿ÀÇÁ¼ÂÀÌ offset ÀÇ ÆÐŶÀ», ÁöÁ¤µÈ È£½ºÆ®ÀÇ ÁöÁ¤µÈ Port¹øÈ£¿¡ ¼Û½Å Çϱâ À§ÇÑ µ¥ÀÌÅͱ׷¥ ÆÐŶÀ» »ý¼ºÇÑ´Ù.

 

 

DatagramPacket ÁÖ¿ä ¸â¹ö¸Þ¼­µå

public InetAddress getAddress () : ÀÌ µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½ÅÁöÀÎ ¸Ó½Å, ¶Ç´Â µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½Å¿øÀÎ ¸Ó½ÅÀÇ IP Address¸¦ µ¹·ÁÁØ´Ù. 

public byte[] getData () : ¼ö½ÅÇÑ µ¥ÀÌÅÍ ¶Ç´Â ¼Û½ÅÇÏ´Â µ¥ÀÌÅ͸¦ µ¹·ÁÁØ´Ù.

public int getLength () : ¼Û½ÅÇÏ´Â µ¥ÀÌÅÍÀÇ ±æÀÌ, ¶Ç´Â ¼ö½ÅÇÑ µ¥ÀÌÅÍÀÇ ±æÀ̸¦ µ¹·ÁÁØ´Ù. 

public int getOffset () : ¼Û½ÅÇÏ´Â µ¥ÀÌÅÍÀÇ ¿ÀÇÁ¼Â, ¶Ç´Â ¼ö½ÅÇÑ µ¥ÀÌÅÍÀÇ ¿ÀÇÁ¼ÂÀ» µ¹·ÁÁØ´Ù. 

public int getPort () : ÀÌ µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½ÅÁö, ¶Ç´Â µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½Å ¿ø·¡ÀÇ, ¸®¸ðÆ® È£½ºÆ®»óÀÇ Port¹øÈ£¸¦ µ¹·ÁÁØ´Ù.

public void setAddress (InetAddress iaddr) : ÀÌ µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½ÅÁöÀÎ ¸Ó½ÅÀÇ IP Address¸¦ ¼³Á¤ÇÑ´Ù. 

public void setData (byte[] buf) : ÀÌ ÆÐŶÀÇ µ¥ÀÌÅÍ ¹öÆÛ¸¦ ¼³Á¤ÇÑ´Ù. 

public void setData (byte[] buf, int offset, int length) : ÀÌ ÆÐŶÀÇ µ¥ÀÌÅÍ ¹öÆÛ¸¦ ¼³Á¤ÇÑ´Ù. 

public void setLength (int length) : ÀÌ ÆÐŶÀÇ ±æÀ̸¦ ¼³Á¤ÇÑ´Ù. 

public void setPort (int iport) : ÀÌ µ¥ÀÌÅͱ׷¥ÀÇ ¼Û½ÅÁöÀÎ ¸®¸ðÆ® È£½ºÆ®ÀÇ Port¹øÈ£¸¦ ¼³Á¤ÇÑ´Ù.



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