Python网络编程测试－socket初探
由于项目需要很多数据，虽然网上有些研究中心发布的数据库，但是都要收费，对于我这种三无人员来说简直是奢侈。
（一个人脸识别的数据库要1000刀！WTF！）
慢慢试着自己开发一个搜索工具吧。。。
先测试一个socket小小功能函数吧（非常小，高手就路过吧。。。）
[python] #testint of sending infomation to www.zzzyk.com
import sys , socket , time
host = sys.argv[1]
xport = sys.argv[2]
filename = sys.argv[3]
print('getting socket...')
try:
s = socket.socket(socket.AF_INET , socket.SOCK_STREAM)
except socket.error , e:
print('here is a error: %s') % e
sys.exit(1)
print('done')
print('getting socket port')
try:
port = int(xport)
except ValueError:
try:
port = socket.getprotobyname(xport , 'tcp')
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
print('done')
print('connecting the host')
try:
s.connect((host , port))
except socket.gaierror , e:
print('here is an error happened: %s') % e
sys.exit(1)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
print('done')
print('sleeping...')
time.sleep(3)
print('connecting...')
try:
s.sendall('GET %s HTTP/1.0\r\n\r\n' % filename)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
try:
s.shutdown(1)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
while True:
try:
buf = s.recv(64)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
if not len(buf):
break
sys.stdout.write(buf)
#testint of sending infomation to www.zzzyk.com
import sys , socket , time
host = sys.argv[1]
xport = sys.argv[2]
filename = sys.argv[3]
print('getting socket...')
try:
s = socket.socket(socket.AF_INET , socket.SOCK_STREAM)
except socket.error , e:
print('here is a error: %s') % e
sys.exit(1)
print('done')
print('getting socket port')
try:
port = int(xport)
except ValueError:
try:
port = socket.getprotobyname(xport , 'tcp')
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
print('done')
print('connecting the host')
try:
s.connect((host , port))
except socket.gaierror , e:
print('here is an error happened: %s') % e
sys.exit(1)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
print('done')
print('sleeping...')
time.sleep(3)
print('connecting...')
try:
s.sendall('GET %s HTTP/1.0\r\n\r\n' % filename)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
try:
s.shutdown(1)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
while True:
try:
buf = s.recv(64)
except socket.error , e:
print('here is an error happened: %s') % e
sys.exit(1)
if not len(buf):
break
sys.stdout.write(buf)
Python的socket模块（2.6版本，3.2的还没试，估计差不多）定义了4种可能出现的错误：
1 与一般IO和通信问题相关：socket.error
2 与查询地址信息相关：socket.gaierror
3 与其他地址错误相关：socket.herror
4 与在一个socket上调用settimeout()后，处理超时相关： socket.timeout
上面的code有个重大问题，那就是没有将socket关闭，因为要测试socket模块shutdown函数（因为如果程序设计不当，shutdown函数会引发一些问题）,最后加上这个代码段就可以了
[python] try:
s.shutdown(1)
except socket.error , e:
print('here is an error: %s') % e
sys.exit(1)
try:
s.shutdown(1)
except socket.error , e:
print('here is an error: %s') % e
sys.exit(1)
lol
摘自 FishinLab的专栏
补充：Web开发 , Python ,
